Building a modular home in Illinois gives you the opportunity to create a lovely permanent home without going through every stage of traditional on-site construction. Whether you’re planning a modern farmhouse in central Illinois or a quiet retreat on rural land, modular construction offers flexibility in both design and location.
However, before choosing a floor plan or purchasing land, it’s important to understand Illinois modular home regulations. State and local rules can make it a confusing road to travel and it’s common to have lots of questions.
At Zook Cabins, we help homeowners navigate the process of choosing a modular home that fits their needs and local building requirements. This guide explains what you need to know about Illinois modular home laws, permits, foundation requirements, utilities, and more so you can move forward with confidence.
Modular Home Requirements by County
| Adams County | Adams County Home Page |
| Alexander County | Alexander County Home Page |
| Bond County | Bond County Home Page Bond County Zoning Department |
| Boone County | Boone County Home PageBoone County Building & Zoning Department |
| Brown County | Brown County Home Page |
| Bureau County | Bureau County Home PageBureau County Planning & Zoning Department |
| Calhoun County | Calhoun County Home Page |
| Carroll County | Carroll County Home PageCarroll County Zoning & Building Department |
| Cass County | Cass County Home PageCass County Zoning Department |
| Champaign County | Champaign County Home PageChampaign County Planning & Zoning Department |
| Christian County | Christian County Home PageChristian County Zoning Department |
| Clark County | Clark County Home Page |
| Clay County | Clay County Home Page |
| Clinton County | Clinton County Home PageClinton County Zoning Office |
| Coles County | Coles County Home PageColes County Regional Planning Department |
| Cook County | Cook County Home PageCook County Building & Zoning Department |
| Crawford County | Crawford County Home Page |
| Cumberland County | Cumberland County Home Page |
| DeKalb County | DeKalb County Home Page |
| DeWitt County | DeWitt County Home PageDeWitt County Planning & Zoning Department |
| Douglas County | Douglas County Home Page |
| DuPage County | DuPage County Home PageDuPage County Building & Zoning Department |
| Edgar County | Edgar County Home Page |
| Edwards County | Edwards County does not have a government website. |
| Effingham County | Effingham County Home Page |
| Fayette County | Fayette County Home Page |
| Ford County | Ford County Home PageFord County Zoning Office |
| Franklin County | Franklin County Home PageFranklin County Code of Ordinances |
| Fulton County | Fulton County Home PageFulton County Zoning DepartmentFulton County Zoning Ordinance |
| Gallatin County | Gallatin County Home Page |
| Greene County | Greene County does not have a government website. |
| Grundy County | Grundy County Home PageGrundy County Planning & Zoning Office |
| Hamilton County | Hamilton County Home Page |
| Hancock County | Hancock County Home Page |
| Hardin County | Hardin County Home Page |
| Henderson County | Henderson County does not have a government website. |
| Henry County | Henry County Home PageHenry County Zoning & Building Department |
| Iroquois County | Iroquois County Home PageIroquois County Planning & Zoning Office |
| Jackson County | Jackson County Home Page |
| Jasper County | Jasper County does not have a government website. |
| Jefferson County | Jefferson County Home Page |
| Jersey County | Jersey County Home Page |
| Jo Daviess County | Jo Daviess County Home PageJo Daviess County Planning & Development |
| Johnson County | Johnson County does not have a government website. |
| Kane County | Kane County Home PageKane County Building & Zoning DivisionKane County Zoning Ordinance |
| Kankakee County | Kankakee County Home Page |
| Kendall County | Kendall County Home PageKendall County Building & Zoning Department |
| Knox County | Knox County Home PageKnox County Zoning Department |
| Lake County | Lake County Home PageLake County Zoning Department |
| LaSalle County | LaSalle County Home PageLaSalle County Zoning Department |
| Lawrence County | Lawrence County Home Page |
| Lee County | Lee County Home PageLee County Zoning & Planning Office |
| Livingston County | Livingston County Home PageLivingston County Planning & Zoning Department |
| Logan County | Logan County Home PageLogan County Zoning Office |
| Macon County | Macon County Home PageMacon County Planning & Zoning Department |
| Macoupin County | Macoupin County Home PageMacoupin County Permits & Zoning |
| Madison County | Madison County Home PageMadison County Building & Zoning Department |
| Marion County | Marion County Home Page |
| Marshall County | Marshall County Home PageMarshall County Zoning Department |
| Mason County | Mason County Home PageMason County Zoning Department |
| Massac County | Massac County Home Page |
| McDonough County | McDonough County Home Page |
| McHenry County | McHenry County Home PageMcHenry County Planning & DevelopmentMcHenry County Building Codes |
| McLean County | McLean County Home PageMcLean County Building & Zoning Department |
| Menard County | Menard County Home PageMenard County Zoning Department |
| Mercer County | Mercer County Home PageMercer County Zoning Department |
| Monroe County | Monroe County Home PageMonroe County Zoning & Building Department |
| Montgomery County | Montgomery County Home Page |
| Morgan County | Morgan County Home Page |
| Moultrie County | Moultrie County Home PageMoultrie County Planning & Zoning Department |
| Ogle County | Ogle County Home PageOgle County Planning & Zoning Department |
| Peoria County | Peoria County Home PagePeoria County Planning & Zoning Department |
| Perry County | Perry County Home PagePerry County Building Permit Information |
| Piatt County | Piatt County Zoning Department |
| Pike County | Pike County Home PagePike County Zoning Department |
| Pope County | Pope County does not have a government website. |
| Pulaski County | Pulaski County Home Page |
| Putnam County | Putnam County Home PagePutnam County Zoning Office |
| Randolph County | Randolph County Home PageRandolph County Land Resource |
| Richland County | Richland County does not have a government website. |
| Rock Island County | Rock Island County Home PageRock Island County Building & Zoning Department |
| Saline County | Saline County Home Page |
| Sangamon County | Sangamon County Home PageSangamon County Building & Zoning |
| Schuyler County | Schuyler County Home Page |
| Scott County | Scott County Home Page |
| Shelby County | Shelby County Home PageShelby County Zoning Department |
| St. Clair County | St. Clair County Home PageSt. Clair County Building & Zoning Department |
| Stark County | Stark County Home PageStark County Building & Zoning Department |
| Stephenson County | Stephenson County Home PageStephenson County Zoning Department |
| Tazewell County | Tazewell County Home PageTazewell County Zoning Codes |
| Union County | Union County Home Page |
| Vermilion County | Vermilion County Home PageVermillion County Building Department |
| Wabash County | Wabash County does not have a government website. |
| Warren County | Warren County Home PageWarren County Zoning Department |
| Washington County | Washington County Home PageWashington County Zoning Department |
| Wayne County | Wayne County does not have a government website. |
| White County | White County Home Page |
| Whiteside County | Whiteside County Home PageWhiteside County Building & Zoning |
| Will County | Will County Home PageWill County Planning & Zoning Department |
| Williamson County | Williamson County Home Page |
| Winnebago County | Winnebago County Home PageWinnebago County Building DivisionWinnebago County Planning & Zoning |
| Woodford County | Woodford County Home PageWoodford County Building & Zoning |
Does Adams County, Illinois Allow Modular Homes?
Yes, modular homes are allowed in Adams County, Illinois, where single-family homes are permitted. Homeowners planning to install a modular home in Adams County should review local land-use requirements and determine whether their property falls within a regulated floodplain before beginning construction. Adams County requires a Floodplain Development Permit for any development within the 100-year floodplain, including new buildings, grading, excavation, and filling.
For properties outside flood-prone areas, homeowners should confirm applicable residential building permits, setback requirements, septic approvals, and any municipal zoning restrictions. Adams County does not publish a readily identifiable countywide residential setback schedule in the sources reviewed, so property-specific requirements should be verified before finalizing a modular home site plan.
Contact the Adams County Highway Department at 217-223-0614 to determine whether floodplain approval is required. Confirm the property’s jurisdiction and local building requirements before purchasing or preparing the site for a modular home.
Does Alexander County, Illinois Allow Modular Homes?
Yes, Alexander County allows modular home construction. However, many additional considerations are present because of the county’s proximity to the Mississippi, Ohio, and Cache Rivers. Homeowners should check their property’s flood hazard designation and determine whether any floodplain development restrictions apply before selecting a foundation design or placing an order for a modular home.
Alexander County’s publicly accessible resources do not provide a clearly documented countywide residential setback schedule or modular-home-specific permitting procedure. Parcels within incorporated communities, including Cairo or Thebes, are subject to the local zoning regulations, so homeowners within those towns can check there.
Start with the Alexander County government website to contact the county’s Building Commission and determine which office oversees residential construction at the proposed address. Homeowners can also review the Alexander County flood hazard maps before evaluating foundation, septic, and site preparation costs.
Does Bond County, Illinois Allow Modular Homes?
Yes! Bond County, Illinois has established zoning regulations that directly affect where modular homes can be placed, making it important for homeowners to identify their property’s zoning district before beginning construction. Under the county’s June 2025 zoning ordinance, the R-1 Single-Family Residential District generally requires a minimum lot area of 21,780 square feet, a 25-foot front setback, a rear setback of 25 feet, and a side setback based on 10% of the lot width, subject to the ordinance’s minimum and exceptions. In the A-1 Agricultural District, the requirements are more restrictive, including a five-acre minimum lot size and setbacks of 50 feet from the front and rear property lines and 25 feet from the sides.
The county also has an R-4 Residential Overlay District affecting certain areas within or near municipalities. Its minimum lot requirements depend partly on access to public water and sewer service, with larger lots required where those utilities are unavailable. Modular home plans must comply with the applicable district requirements, and homeowners should confirm the necessary zoning certificate and site approvals before construction.
To move ahead, review the Bond County Zoning Ordinance particularly Sections 4-1 through 4-5 and Section 4-12. Contact the Bond County Zoning Administrator to verify the property’s district and the process for securing an Initial Certificate of Zoning Compliance before ordering a modular home.
Does Boone County, Illinois Allow Modular Homes?
Yes, Boone County specifically recognizes modular homes within its zoning ordinance, requiring them to be constructed with conventional stick framing, placed on permanent foundations, and designed to meet applicable floor-area, lot, yard, and building-code requirements. In the A-1 Agricultural Preservation District, residential parcels of less than five acres generally require a minimum lot size of two acres, a 75-foot front setback measured from the road right-of-way, 15-foot side setbacks, and a 35-foot rear setback. Residential parcels of five acres or more in the same district require 40-foot side and rear setbacks.
Boone County also establishes minimum dwelling floor areas of 860 square feet for one-story residences and 720 square feet for two-story residences in the A-1 district. Importantly, the county restricts new non-farm residences on agricultural property, with eligibility affected by whether a parcel was legally established before May 10, 1978. Homeowners considering undeveloped agricultural land should therefore verify that the parcel qualifies for residential construction before purchasing the property.
Before selecting a modular home model, confirm that the lot is legally buildable, the proposed home’s square footage meets district requirements, and the site can accommodate the necessary foundation, access, septic system, and setbacks.
Does Brown County, Illinois Allow Modular Homes?
Yes, Brown County, Illinois. However, homeowners interested in building a modular home in Brown County should first determine where their property falls within an incorporated municipality or an unincorporated part of the county, as permitting and zoning responsibilities may differ.
The City of Mount Sterling, Brown County’s county seat, publishes separate applications for building, electrical, culvert, excavation, and mobile housing permits, along with its municipal zoning code. Those city requirements should not automatically be applied to properties elsewhere in Brown County.
For rural properties, a clearly documented countywide residential setback schedule is not available so homeowners should verify the rules applicable to their specific parcel directly with the municipal zoning department.
If building within Mount Sterling, begin with the published permit applications and zoning code. For property outside city limits, contact the appropriate county or township officials to identify the responsible permitting authority and confirm whether any local construction or land-use approvals are required.
Does Bureau County, Illinois Allow Modular Homes?
Yes, Bureau County permits modular home construction throughout its unincorporated areas and municipalities that do not maintain their own zoning ordinances. The county has not adopted a general local building code, but its zoning ordinance regulates property uses, setbacks, and building placement. Agricultural zoning includes setbacks of at least 50 feet from road rights-of-way and 30 feet from side and rear property lines in certain parcel-division situations. These figures should not be assumed to apply to every residential property.
Homeowners should also account for well and septic system approvals, which are handled by the Bureau County Health Department. The Planning and Zoning Department typically conducts three zoning compliance inspections during construction, including inspections at the site stakeout, footing, and completion stages. These are zoning inspections rather than structural building-code inspections.
Before purchasing a modular home, homeowners can contact the Bureau County Planning and Zoning Department at zoning@bureaucounty-il.gov to verify their property’s zoning designation, applicable setbacks, and permit requirements.
Does Calhoun County, Illinois Allow Modular Homes?
Absolutely. Calhoun County allows modular home construction and regulates residential construction through its Zoning Ordinance of 1971, which requires building permits for nonagricultural structures and layout plans showing the proposed development.
The county’s Building Inspector also administers subdivision and floodplain ordinances and issues certificates of occupancy to confirm zoning compliance. Minimum lot sizes and building setbacks depend on the property’s zoning classification, making verification necessary before selecting a modular home design.
Floodplain restrictions are particularly important because Calhoun County lies between the Mississippi and Illinois Rivers. Homes proposed within regulated floodplains may face additional construction and elevation requirements, and development must comply with the county’s Flood Plain Ordinance.
Homeowners can review the available building permit forms and discuss lot eligibility, setbacks, floodplain restrictions, and occupancy approvals directly with Building Inspector Chris Behrens at 618-576-9700, extension 4, or chris.behrens@calhouncountyil.gov.
Does Carroll County, Illinois Allow Modular Homes?
Yes. Carroll County permits modular home construction and administers zoning regulations throughout its unincorporated areas, including rural subdivisions and communities such as Lake Carroll.
Its Chapter 700 Zoning Ordinance establishes multiple districts, including Agricultural, Residential-1, and Residential-2, each with different restrictions on property use and building placement.
Homeowners proposing modular homes on agricultural property should be particularly careful because creating a new residential building site in the Agricultural District requires a Land Evaluation and Site Assessment (LESA). This process evaluates the proposed development’s suitability before residential construction can proceed.
Prospective homeowners should explore the Carroll County building application resources and contact the Zoning and Building Office at 815-244-0284 or zoning@carrollcountyil.gov to establish whether their parcel qualifies for residential development before committing to a modular home purchase.
Does Cass County, Illinois Allow Modular Homes?
Yes, modular homes are allowed in Cass County. Cass County requires homeowners in its unincorporated areas and villages without separate zoning ordinances to comply with the county’s residential zoning and building permit regulations.
New modular home construction requires a building permit, and property owners who begin construction without securing approval may face fines. Setback distances and lot dimensions must be confirmed according to the property’s zoning district rather than assuming a single countywide standard.
The county’s Zoning Enforcement Officer reviews building permit applications and processes requests for conditional uses and zoning changes. To determine whether a modular home can be placed on a particular property, residents should reach out to Dave Mayes, the Cass County Zoning Enforcement Officer, at 217-370-0111 or davecchd@gmail.com, and request guidance on the applicable zoning district and zoning permit application.
Does Champaign County, Illinois Allow Modular Homes?
Yes, Champaign County’s zoning ordinance allows for modular home construction and establishes specific requirements for residential development in unincorporated areas, including agricultural districts where new homes may be subject to additional land-use restrictions.
Before installing a modular home, homeowners must determine whether residential construction is allowed on their parcel and obtain the necessary Zoning Use Permit.
The ordinance establishes minimum lot dimensions and setbacks that vary by district and road classification, meaning the allowable building location may depend on both the property’s zoning and the type of roadway providing access.
Homeowners considering rural property should consult the Champaign County Zoning Ordinance and speak with the Department of Planning and Zoning to confirm permitted residential uses, setbacks, and the documentation needed for a new modular dwelling.
Does Christian County, Illinois Allow Modular Homes?
Yes, Christian County allows modular home construction and has established zoning regulations that govern residential construction, including modular homes, throughout areas under county zoning jurisdiction. Its zoning code permits single-family dwellings in the R-1 Residential District and recognizes manufactured homes as an allowable use.
The R-2 District also permits uses allowed in R-1. Modular homes must comply with the applicable district’s minimum lot dimensions, building placement restrictions, and required yards. The county’s zoning regulations also establish an approval process for variances and special uses when a proposed development cannot meet standard requirements.
A notable consideration is that Christian County requires initial and final certificates of zoning compliance, which are reviewed by the Zoning Administrator. The county also maintains a formal process for zoning amendments and communicates new construction information to its emergency addressing and assessment offices.
Does Clark County, Illinois Allow Modular Homes?
Yes, modular home construction is allowed in Clark County but requires careful attention to the property’s location because municipal building regulations and rural development requirements can differ.
Properties within municipalities such as Marshall and Casey may be subject to separate local construction and zoning requirements than rural areas under county regulations.
Another consideration is the location of the proposed driveway and the infrastructure required to accommodate delivery and installation of a modular home. Property owners should determine which authority controls the adjoining roadway and whether culvert, driveway access, septic, or utility approvals are necessary.
Those considering land in rural Clark County can begin by contacting the Clark County government office at 217-826-8311 to identify the appropriate local permitting authority and establish whether any zoning, building placement, or roadway access restrictions apply to their property.
Does Clay County, Illinois Allow Modular Homes?
Yes, Clay County allows modular home construction and has adopted a Building Setback Ordinance addressing building placement along county roadways, making road frontage an important consideration for homeowners installing modular homes.
Specific setback distances must be checked against the applicable ordinance and road jurisdiction rather than applying a single minimum distance to every property.
The Clay County Highway Department maintains county highways and assists local townships with their roads, while seasonal weight limits may affect delivery routes. Township roads can be subject to restrictions even when county highway restrictions have been suspended.
Before arranging the transportation or installation of a modular home, property owners should consult the Clay County Highway Department’s setback and access regulations to verify roadway setbacks, driveway access requirements, and potential delivery restrictions.
Does Clinton County, Illinois Allow Modular Homes?
Yes! Clinton County permits modular home construction and maintains a comprehensive zoning ordinance governing residential construction in unincorporated areas and villages without independent zoning regulations.
Under Section 40-4-8, the R-1 Residential District establishes a minimum lot area of 6,000 square feet, a minimum lot width of 100 feet, and 50-foot front, 25-foot side, and 25-foot rear setbacks, subject to applicable exceptions. Roadway setbacks can also override standard front-yard requirements, with a minimum distance of 100 feet from the centerline of county roads and 75 feet from township road centerlines outside incorporated communities.
The county requires a zoning certificate for new homes, and applicants must provide documentation including a site plan, floor plan, sewage permit, and deed. Different standards apply to agricultural and other residential districts, so homeowners must confirm their property’s designation before preparing a foundation or ordering a modular home.
The Clinton County Zoning Department provides residential building applications and zoning maps; homeowners can also contact Zoning Administrator Jami Staser to review their proposed development and obtain the appropriate zoning certificate.
Does Coles County, Illinois Allow Modular Homes?
Yes, Coles County does permit modualr home construction but it differs from many Illinois counties because it does not administer general county zoning or require county building permits for properties outside the zoning jurisdictions of its municipalities.
However, this does not eliminate all restrictions on modular home construction. County ordinances still address development in floodplains, subdivisions, and certain other regulated areas, while applicable state and federal building requirements remain in effect.
Homeowners should pay particular attention to municipal jurisdiction before assuming their property is exempt from local zoning.
Mattoon, Charleston, Oakland, Lerna, Humboldt, and Ashmore exercise zoning authority that can extend up to 1.5 miles beyond their municipal boundaries. Depending on a property’s location, homeowners may therefore need municipal approval even when building outside city limits.
For help identifying the appropriate permitting authority and determining whether local setback or zoning rules apply, prospective modular home buyers can consult the Coles County zoning information or contact Kelly Lockhart at 217-348-0521 before finalizing their site plans.
Does Cook County, Illinois Allow Modular Homes?
Yes. Cook County requires building permits for new residential construction in unincorporated areas, including the installation of modular homes. The county regulates residential development through several zoning districts, each establishing its own minimum lot dimensions, building setbacks, and height restrictions.
Properties in the R-5 district that rely on septic systems must have at least 40,000 square feet of lot area. Other districts have different requirements, so homeowners should verify the property’s zoning classification before choosing a modular home model or finalizing a foundation plan.
Cook County also requires a zoning certificate when an unincorporated residential property goes under contract. The certificate costs $100 per lot and generally takes up to five business days to issue. Residential building permit applications require a $100 initial deposit, although additional permit fees may apply.
Homeowners can contact the Cook County Department of Building and Zoning to obtain zoning information, confirm property-specific setback requirements, and review the documentation necessary for a new modular dwelling.
Does Crawford County, Illinois Allow Modular Homes?
Yes, Crawford county as a whole will allow modula rhome construction.Yet, homeowners considering modular homes in Crawford County should first establish whether their property is subject to municipal development regulations or falls within an unincorporated rural area. Due to a lack of countywide zoning setbacks, your parcel will need to be verified with the local departments.
Another important consideration is whether the property has approved access to a public road, adequate space for a private sewage system, and a foundation location outside regulated flood hazards. These factors can significantly influence the usable building area, particularly for rural parcels that lack public sewer connections.
Before selecting a modular home or purchasing undeveloped land, homeowners should contact the appropriate local government in Crawford County, beginning with the county offices in Robinson, to verify whether residential permits, road access approvals, or other site-development requirements apply.
Does Cumberland County, Illinois Allow Modular Homes?
Potentially. Cumberland County’s published comprehensive planning materials discuss building permits and zoning as potential development policies, but they do not establish a verified countywide residential setback schedule for modular homes.
Homeowners should therefore confirm the local regulatory requirements before beginning construction, particularly when their property is located within or near municipalities such as Toledo, Greenup, or Neoga.
Residents interested in building a modular home can begin with the Cumberland County government in Toledo to identify the responsible permitting authority, then obtain confirmation of applicable setbacks, septic requirements, and construction approvals before preparing their site.
Does DeKalb County, Illinois Allow Modular Homes?
Yes it does! DeKalb County regulates modular home construction through its zoning ordinance, building codes, and subdivision regulations, with permits required for new homes in unincorporated areas.
In the A-1 Agricultural District, the county establishes a 50-foot setback for structures along roadways under Section 53-D-2.F.1 of its zoning ordinance. Other setbacks and dimensional requirements depend on the property’s zoning classification.
Agricultural parcels also require particular attention because a property’s existing use or acreage does not automatically establish eligibility for an additional residence.
The county’s Community Development Department reviews building permit applications and conducts construction inspections. Homeowners must also consider stormwater management, foundation construction, and private well or septic requirements where public utilities are unavailable.
Those evaluating agricultural property or an existing residential lot should consult DeKalb County Community Development to verify residential eligibility, confirm setbacks, and determine the permits and inspections required before installing a modular home.
Does DeWitt County, Illinois Allow Modular Homes?
It sure does. DeWitt County has detailed zoning requirements that directly affect modular home placement, with numerical standards varying by district.
In the R-1 Low Density Single-Family Residential District, properties generally require a minimum lot area of 12,150 square feet, a lot width of 90 feet, and setbacks of 30 feet from the front, 20 feet from the rear, and 10 feet from each side. The R-2 district allows smaller residential lots of 7,350 square feet, with a minimum width of 70 feet and setbacks of 20 feet at the front and rear and 6 feet at the sides.
Rural requirements are considerably different. The Agricultural, RD-1, and RD-2 districts generally require at least 87,120 square feet, equivalent to two acres, with 50-foot front, 35-foot rear, and 15-foot side setbacks. The RD-3 district allows a minimum lot size of 21,780 square feet, with 30-foot front, 20-foot rear, and 15-foot side setbacks.
Parcels without public sewer service may require additional acreage depending on soil suitability, and the county requires lots to abut a public thoroughfare.
Prospective homeowners should review Chapter 155 of the DeWitt County Zoning Ordinance and consult the county’s zoning administration before purchasing land, especially when planning a new residence on agricultural property.
Does Douglas County, Illinois Allow Modular Homes?
Yes. Douglas County requires building permits for new residential construction, with the Highway Department overseeing the permitting process for properties under county jurisdiction. The county publishes specific roadway setback requirements that homeowners must consider when planning the placement of a modular home.
Buildings must generally be set back at least 100 feet from the centerline of a state highway, 85 feet from a county highway, and 70 feet from a township road. These measurements are especially important for rural lots, where the distance between the roadway and the proposed foundation can affect the available building area.
Building permit applications must include a site sketch showing the proposed home’s dimensions, its location on the property, and the distance from the roadway centerline. New construction without access to public sanitary sewers also requires a soil evaluation approved by the Douglas County Health Department before the building permit can be issued. Construction cannot begin until the application has been approved and applicable fees have been collected.
Homeowners can coordinate their project with County Engineer James E. Crane while private septic and well questions can be directed to the Douglas County Health Department.
Does DuPage County, Illinois Allow Modular Homes?
Yes, DuPage County permits modular construction, yet it enforces detailed zoning regulations for modular home construction in unincorporated areas, including minimum lot dimensions, building setbacks, and maximum building heights.
In the R-3 Single-Family Residence District, detached residences generally require a 30-foot front setback, a 25-foot rear setback, and interior side setbacks equal to 10% of the lot width, although each interior side setback is not required to exceed 10 feet. Corner lots also require a 30-foot street-side setback. The standard maximum building height is 36 feet, subject to exceptions for certain larger properties.
The county’s R-5 district allows single-family detached residences on lots measuring at least 8,000 square feet, with a minimum width of 60 feet and depth of 100 feet. These dimensional requirements can affect whether a particular modular home design will fit comfortably on the property, especially when accounting for garages, driveways, and required yard space.
DuPage County maintains an online zoning lookup system that uses a property’s parcel identification number to identify its classification.
Before finalizing a modular home floor plan, homeowners should contact the DuPage County Zoning Division at 630-407-6700 to verify the applicable zoning district, permissible building footprint, and permit requirements.
Does Edgar County, Illinois Allow Modular Homes?
Yes, Edgar County allows modular construction, but requirements may vary by location. Before planning a modular home, check with the local authority responsible for your property, especially if your land is within or near Paris or another municipality.
The county’s public resources do not provide a clearly established countywide residential setback table or a comprehensive modular home permit procedure. Therefore, minimum lot dimensions, road setbacks, and applicable building approvals should be verified for the individual property.
Properties created through subdivision may also be subject to recorded plats, easements, and development restrictions. The Edgar County Clerk and Recorder maintains deeds, subdivision records, easements, and other land documents that can help identify these restrictions.
Prospective buyers should begin with the Edgar County Clerk and Recorder in Paris and consult the appropriate local permitting authority and Edgar County Public Health Department to establish the applicable construction requirements before purchasing land or scheduling home delivery.
Does Edwards County, Illinois Allow Modular Homes?
Yes, modular home construction is allowed in Edwards County but requires homeowners to distinguish between properties inside municipalities and those in unincorporated rural areas.. Properties within Albion or West Salem are subject to municipal construction requirements while unincorporated areas follow the county zoning regulations.
When building on rural land, homeowners should confirm that the parcel has adequate road access and enough suitable ground for the modular home’s permanent foundation, well, and septic system. Flood hazard conditions should also be checked before grading or foundation work begins.
Without a verified countywide setback schedule, it is important to obtain the applicable building placement requirements directly from local officials rather than assuming that rural properties are unrestricted.
Homeowners can begin by contacting Edwards County government at 618-445-2115 or visiting the Edwards County Courthouse at 50 East Main Street in Albion to identify the authority responsible for permits, roadway access, and residential development at their proposed location.
Does Effingham County, Illinois Allow Modular Homes?
Yes, modular homes are allowed in Effingham County. Effingham County does not currently administer general countywide zoning or require county building permits or certificates of occupancy for construction in its unincorporated areas. However, the county enforces roadway setbacks that can affect the placement of modular homes.
According to the Effingham County Highway Department, buildings along most county and state highways must be set back 90 feet from the roadway centerline. Although the county does not establish building setbacks along township roads, it recommends keeping improvements at least 40 feet from the centerline.
Homeowners should also determine whether their property falls within the zoning jurisdiction of an incorporated municipality, since some communities, including Effingham and Teutopolis, exercise development authority up to 1.5 miles beyond their boundaries.
For newly subdivided properties served by public water and sewer, the county’s subdivision ordinance generally specifies a minimum lot area of 12,000 square feet and a minimum width of 100 feet at the building line. Separately, seasonal highway weight restrictions, typically considered between January 15 and April 15, can affect transportation arrangements for large modular home sections.
Property owners can discuss roadway setbacks, access permits, and delivery restrictions with the Effingham County Highway Department at 217-342-6550 before preparing their foundation or scheduling installation.
Does Fayette County, Illinois Allow Modular Homes?
Yes, Fayette County regulates and allows modular construction and development along county and township roads through its subdivision and setback regulations, making the location of a proposed modular home especially important for rural properties.
The Fayette County Highway Department maintains approximately 167 miles of county highways and provides engineering assistance to the county’s 20 townships, which collectively maintain approximately 1,100 miles of roads.
Homeowners should determine whether the property fronts a state highway, county highway, or township road because the applicable road authority can affect building placement and access for modular home delivery.
Specific residential setback distances must be confirmed using the county’s published setback regulations before preparing a foundation.
Properties requiring new entrances may need additional coordination with the appropriate road commissioner. Residents planning a modular home can contact Fayette County Engineer Brent Taylor to review the subdivision and setback regulations, identify the applicable roadway requirements, and determine whether driveway improvements are necessary before scheduling construction.
Does Ford County, Illinois Allow Modular Homes?
Yes it does! Ford County has clearly defined regulations for new residential development in its unincorporated areas, including properties zoned AG-1 Agricultural. In this district, a newly divided residential lot generally must contain at least one acre, or 43,560 square feet, and have a minimum width of 150 feet.
Required setbacks are 50 feet along township roads, 75 feet along county roads, and 100 feet along highways, with additional setbacks of 20 feet from side property lines and 50 feet from the rear. Non-farm dwellings on parcels smaller than five acres require a Conditional Use Permit when no existing homesite is present, making land eligibility an important consideration before purchasing rural property.
Ford County also requires construction permits for new residential buildings. Nonagricultural permits cost $20 for the first 200 square feet, plus $0.15 per square foot above that threshold. For example, a 1,500-square-foot home would have an estimated construction permit fee of $215 under this schedule. Beginning construction before obtaining the permit doubles the fee.
Homeowners can confirm zoning classifications, building placement, and conditional-use requirements with Ford County Zoning Enforcement Officer Brandon Magers at 217-249-4727 or bmagers@fordcounty.illinois.gov.
Does Franklin County, Illinois Allow Modular Homes?
Yes, Franklin County allows modular homes but requires building permits for permanent structures, including new residential construction and modular homes, in areas subject to county permitting.
The county’s published building permit information establishes a $50 fee per structure, with permits available through the Supervisor of Assessments Office and approval required from the County Engineer. Separate permits are necessary for each structure, so homeowners planning a detached garage or another permanent building should account for additional applications.
The county also specifically identifies mobile and manufactured homes as requiring permits, although these housing categories should not be confused with state-approved modular construction.
Setback requirements may depend on municipal regulations and recorded subdivision restrictions rather than a single countywide residential standard. For example, the recorded River Bend Estate subdivision plat identifies a 20-foot front setback, 15-foot rear setback, and side setbacks of at least 8 feet, but those dimensions apply to that particular subdivision and should not be generalized to other properties.
Prospective modular home buyers should contact the Franklin County Supervisor of Assessments at 618-435-9800, located at 901 Public Square in Benton, to confirm permit requirements and identify any site-specific restrictions before beginning construction.
Does Fulton County, Illinois Allow Modular Homes?
Yes, modular homes are allowed wherever single-family homes are permitted in Fulton County. Fulton County requires zoning permits for new residential dwellings in areas governed by the county’s zoning ordinance. The county’s published fee schedule establishes a base permit charge of $125 plus $0.25 per square foot for dwellings in the R-1, R-2, and Agricultural Conservation districts.
Using this calculation, a 1,500-square-foot modular home would have an estimated zoning permit fee of $500, excluding separate foundation, basement, or other applicable charges. Basements carry an additional fee of $0.15 per square foot. If homeowners need a variance, rezoning, or conditional-use approval, the county’s published application fee is $600.
Applicants must provide a parcel identification number, a detailed building sketch, the proposed structure’s location and approximate measurements, and well and septic permit information when applicable. A new rural 911 address can be requested at 309-547-3911. Fulton County also administers floodplain development regulations, which may affect foundation placement and construction approvals.
Before finalizing their modular home plans, residents should contact Planning and Zoning Officer Kimberly Mayberry at 309-547-0902 or zoning@fultonco.org to verify permitted residential uses, applicable setbacks, and the documentation needed for a zoning permit.
Does Gallatin County, Illinois Allow Modular Homes?
Gallatin County does not publish a comprehensive countywide residential zoning ordinance so the best step you can take is to contact your local building authority.
Land near the Ohio and Wabash Rivers deserves particular attention because flood hazards can affect foundation design, drainage, and the feasibility of residential construction.
For properties without public sewer service, the Egyptian Health Department administers private sewage programs throughout Gallatin County. Approval of a suitable wastewater disposal system should be established before purchasing a modular home, particularly on smaller lots or properties with challenging soil conditions.
Homeowners can contact the Egyptian Health Department to discuss sewage requirements and coordinate with Gallatin County government in Shawneetown to identify any applicable floodplain, roadway access, or local development restrictions before preparing their site.
Does Greene County, Illinois Allow Modular Homes?
Yes, Greene County allows modular homes. Homeowners considering a modular home should first determine whether their property lies within municipal boundaries or an unincorporated rural area. The county does not provide a readily identifiable, comprehensive residential setback schedule through its publicly available resources, so minimum lot dimensions and building placement requirements need to be confirmed for the proposed location. Properties near the Illinois River and its floodplain may also require additional consideration of flooding before construction begins.
Private water and sewage arrangements are especially important for rural properties without access to public utilities. Illinois requires private sewage disposal systems to meet state technical standards, including applicable separation distances from wells, property lines, buildings, and other site features.
Homeowners should confirm that their parcel can accommodate the proposed modular home and a compliant wastewater system rather than basing their decision solely on available acreage.
The Greene County Health Department, located at 310 Fifth Street in Carrollton, can be reached at 217-942-6961 or mpeters@greenecountyhd.org for environmental health guidance, while the appropriate municipal or county office should be consulted about land-use approvals.
Does Grundy County, Illinois Allow Modular Homes?
Yes, modular homes are permitted in Grundy County! The county has detailed residential zoning regulations that establish measurable requirements for modular home construction in unincorporated areas. In the R-12 Residential District, single-family homes require a minimum lot area of 12,500 square feet and a width of 80 feet, with setbacks of 25 feet from the front, 10 feet from the sides, and 30 feet from the rear.
Properties in the R-40 district require larger lots of at least 40,000 square feet, with 50-foot front, 30-foot side, and 40-foot rear setbacks. In the Agricultural and Agricultural Residential districts, the minimum residential lot area is generally 1.5 acres, with a minimum width of 170 feet and a 50-foot front setback. Other yard requirements vary by district.
Agricultural property owners should also account for restrictions on creating additional residential lots. The county’s development regulations reference parcels of record as of July 8, 1980, and require surveys and recorded documentation for certain residential lot divisions. Some qualifying access arrangements also require an 18-foot-wide driveway with 13 feet, 6 inches of overhead clearance, which can affect site planning.
Anyone considering a rural modular home should review the Grundy County Unified Development Code, particularly Sections 8-2-3-11 and 8-3-2-2, and contact the county’s Planning and Zoning administration to verify the property’s residential eligibility and construction requirements before purchasing land.
Does Hamilton County, Illinois Allow Modular Homes?
Yes, Hamilton County does allow modular home construction.
Homeowners should therefore distinguish between properties within McLeansboro or other incorporated communities and land under unincorporated county jurisdiction, where the applicable permitting process may differ.
A major consideration when developing rural land is obtaining approval for private water and wastewater systems. The Hamilton County Health Department handles environmental health matters, including well and septic permits, and should be consulted before finalizing the home’s location. Flood hazards and recorded property restrictions may create additional limitations on the usable building area.
Residents can contact the Hamilton County Health Department at 618-643-3522 for well and septic guidance and consult Hamilton County government in McLeansboro to determine whether building permits, subdivision restrictions, or roadway access approvals are required for their proposed modular home.
Does Hancock County, Illinois Allow Modular Homes?
Yes, modular home construction is allowed in Hancock County. Homeowners planning modular construction should determine whether their property is within the jurisdiction of an incorporated municipality such as Carthage, Hamilton, Nauvoo, or Warsaw. The county’s available ordinances address certain specialized developments, including commercial wind and solar energy facilities, but a comprehensive countywide residential zoning ordinance containing minimum lot sizes and building setbacks could not be verified. The absence of a published residential setback table does not establish that individual properties are free from development restrictions.
Rural parcels may still be affected by recorded subdivision plats and private sewage requirements. For modular homes requiring large delivery vehicles, homeowners should also establish whether the proposed access road and driveway can accommodate transportation and installation equipment. Hancock County maintains land and ordinance records through its county government offices in Carthage.
Property owners should consult the Hancock County Clerk’s Office for applicable county ordinances and recorded restrictions, then confirm any municipal permit requirements or roadway access approvals before committing to a modular home purchase.
Does Hardin County, Illinois Allow Modular Homes?
Yes, Hardin County allows modular home construction. However, publicly accessible government resources do not provide a verified countywide residential zoning ordinance or standard setback schedule specifically governing modular home construction. However, modular homes are typically allowed wherever single-family homes are zoned.
Homeowners considering sites near Elizabethtown, Rosiclare, or other communities should determine whether local construction requirements apply to their property. Because Hardin County borders the Ohio River and includes rugged terrain within southern Illinois, flood hazards, slope conditions, drainage, and access limitations may significantly affect the placement and design of a permanent modular home foundation.
Properties near mapped floodplains should be evaluated before construction, while sites on steep or irregular terrain may require additional grading or engineering work. Private wastewater disposal is another important consideration for rural parcels, particularly where soil conditions or slope limit suitable installation locations.
Before finalizing building plans, homeowners should contact the appropriate local officials through the Hardin County Courthouse at 102 East Market Street in Elizabethtown to establish the applicable residential construction and floodplain requirements, and arrange any necessary site or sewage evaluations.
Does Henderson County, Illinois Allow Modular Homes?
Yes, Henderson County allows modular home construction. A comprehensive countywide residential zoning ordinance establishing uniform building setbacks or minimum lot sizes does not exist in Henderson County, so it is vital for homeowners to confirm requirements with local departments.Properties along the Mississippi River should also be evaluated for flood hazards before a foundation location is finalized, particularly where grading or elevation requirements could affect construction costs.
For rural properties without public sewer connections, Henderson County requires private sewage disposal plans to undergo review, site evaluation, and inspection through its Health Department. The department defines private sewage systems to include facilities serving fewer than 15 people when they discharge to the ground surface, along with systems without ground-surface discharge.
Homeowners can contact Henderson County Environmental Health at 309-627-2812, extension 244, to arrange a septic evaluation and should verify any local residential setback, access, and building requirements before purchasing a modular home.
Does Henry County, Illinois Allow Modular Homes?
Yes, Henry County allows modular home construction and has established detailed zoning regulations for new residential construction, including modular homes. Under its published building permit standards, the AG-1 and R-1 classifications list minimum lot areas of 43,560 square feet, equivalent to one acre, with minimum lot widths of 150 feet. The AG-2 and R-2 classifications list 15,000-square-foot lots with 100-foot minimum widths, while the R-3 and R-5 classifications list 12,000-square-foot lots and 80-foot widths.
The published dimensional schedule also identifies front-yard setbacks of 40 feet for certain lower-density districts and 30 feet for R-3 and R-5, with side setbacks generally ranging from 7 to 10 feet. These standards depend on the actual district and any applicable exceptions.
Roadway setbacks may be more restrictive than the ordinary yard requirements. Henry County’s building permit application specifies minimum setbacks of 40 feet from township road rights-of-way and 50 feet from county, state, and federal road rights-of-way. It also identifies minimum centerline distances of 73 feet for township roads and 100 feet for county, state, and federal roads.
Applicants must submit a plot plan showing property dimensions, existing structures, the proposed building location, and distances from property lines. Driveway access permits must be secured from the responsible highway authority before construction, and the Henry County Health Department handles private well and septic approvals at 309-852-0197.
Does Iroquois County, Illinois Allow Modular Homes?
Yes Iroquois County allows regulates residential construction through its zoning ordinance for modular homes, which establishes multiple residential and agricultural districts, including A-1 Agricultural, A-2 Agricultural, RR-1 Single-Family Residential, UR-1 Single-Family Residential, and RH-1 Rural Homestead. The county also establishes minimum roadway setbacks based on highway classifications.
Its published schedule identifies 100-foot setbacks for interstate and major state highways, 50 feet for certain state area-service roads, and 80 feet measured from the road centerline for major and minor county collector roads and township land-access roads. Homeowners should confirm the measurement reference for their particular road classification before preparing a site plan.
New residential projects require county construction permits and inspections, with separate building, electrical, and plumbing inspections available. Iroquois County warns that beginning construction without a permit can result in fines of $1,000 per day.
Before ordering a modular home, property owners should contact Zoning Administrator Julie Feller at 815-432-7221 or visit the Planning and Zoning Office at 1001 East Grant Street in Watseka to determine their property’s zoning classification, allowable building location, and inspection requirements.
Does Jackson County, Illinois Allow Modular Homes?
Yes, Jackson County’s zoning ordinance, revised December 17, 2024, provides specific dimensional standards for rural and urban residential development, including modular home construction. In its Urban/Rural Residential district, properties served by private wells and septic systems generally require at least 1.5 acres, with minimum lot dimensions of 200 feet in width and depth.
Lots served by centralized water and sewage systems may qualify with a minimum area of 15,000 square feet, a width of 85 feet, and a depth of 150 feet. These distinctions are particularly important for homeowners comparing smaller developed lots with larger rural parcels.
The same district requires side setbacks of at least 20 feet and rear setbacks of 30 feet. Front setbacks are measured from the roadway centerline, with minimum distances of 125 feet for state roads, 100 feet for county roads, 83 feet for township roads, and 33 feet for unclassified roads. Buildings exceeding 8,000 square feet face a 50% increase in these roadway setbacks, although that threshold would not affect most ordinary single-family modular homes.
Homeowners should review the county’s current zoning ordinance and confirm utility availability, lot dimensions, and roadway classification with Jackson County’s planning authorities before selecting their home and foundation location.
Does Jasper County, Illinois Allow Modular Homes?
Yes, Jasper County allows modular home construction. Homeowners should distinguish between unincorporated property and land inside Newton, where the city maintains its own zoning ordinance and permit procedures. Within Newton, building permits are required for all new residential construction, including single-family dwellings, and the city publishes a $25 building permit fee for single-family homes.
Applicants must also complete an Application of Zoning Compliance, with plans approved by the Zoning Administrator before construction begins. These requirements are specific to Newton and should not be presented as countywide standards.
Newton’s zoning ordinance also establishes special front setback rules for developed residential blocks. Where at least 50% of the frontage on one side of a block is developed and existing setbacks differ by no more than 10 feet, the required front setback generally follows the average of those existing buildings, subject to a minimum of 15 feet and a maximum required setback of 50 feet. Other lot dimensions and side or rear setbacks depend on the property’s zoning classification.
Residents planning a modular home within Newton can contact City Hall at 618-783-8451 to confirm zoning approval and building permit requirements, while those considering unincorporated property should begin with Jasper County government at 618-783-3124 to identify the responsible local authority.
Does Jefferson County, Illinois Allow Modular Homes?
Yes, Jefferson County allows modular home development in Jefferson County requires particular attention to municipal zoning jurisdiction, especially around Mount Vernon. The City of Mount Vernon administers zoning within its corporate limits and up to 1.5 miles outside the city, meaning some properties that appear to be rural may still be subject to municipal land-use restrictions.
Mount Vernon has 15 zoning districts with different standards for setbacks, minimum lot sizes, permitted residential uses, and building placement. Homeowners must identify their property’s district before assuming a modular home can be installed.
Within Mount Vernon’s building-permit jurisdiction, new structures require permits before construction begins. Property owners seeking a zoning amendment must submit a $25 filing fee, along with the applicable application materials and public-notice documentation. A zoning amendment does not replace the need for a building permit.
Requirements for unincorporated land outside municipal jurisdiction should be confirmed separately, since a uniform countywide residential setback schedule could not be established from the sources reviewed.
Homeowners can contact Mount Vernon’s Engineering and Inspections Administration at 618-242-6830 for properties within its jurisdiction or begin with Jefferson County government at 618-244-8000 for rural parcels.
Does Jersey County, Illinois Allow Modular Homes?
Yes, Jersey County allows and permits modular homes and has straightforward numerical setback requirements for residential construction, making it easier for prospective modular home buyers to evaluate a property’s potential building area. Under Section 150.237 of the county code, residential buildings must generally be set back at least 35 feet from the road right-of-way and 15 feet from adjoining property lines.
The county’s published minimum code requirements identify a 35-foot front setback, 15-foot side setbacks, and a 15-foot rear setback. These measurements are taken from property lines rather than the curb, with the front setback specifically measured from the road right-of-way.
Building permit applications must include a plot plan showing the proposed residence, lot area, and the required setbacks. Jersey County also lists adopted building, mechanical, electrical, and energy conservation codes, together with floodplain development requirements. Homeowners should confirm which code editions are currently enforced and whether their modular home plans satisfy applicable construction standards.
Before arranging delivery or beginning foundation work, residents can contact the Jersey County Code Administrator to review setbacks, permit applications, and any required inspections.
Does Jo Daviess County, Illinois Allow Modular Homes?
Yes, Jo Daviess County allows modular home construction, but it has important restrictions on new residences in agricultural districts, making land eligibility a major consideration for modular home buyers.
Under Section 8-3A-2 of the zoning ordinance, new agricultural and nonagricultural residences in the Agricultural District generally require a minimum zoning lot of 40 acres, although certain lawfully established lots and existing homesites qualify under separate provisions.
The ordinance also allows qualifying existing agricultural residences to be separated from larger parcels when the resulting lot contains at least two acres and maintains a minimum width of 150 feet along the road right-of-way. These exceptions have specific eligibility conditions, including provisions tied to March 1, 1995.
Agricultural District setbacks are also substantial. Along federal or state highways, buildings must be at least 75 feet from the property line or 125 feet from the road centerline, whichever is greater. County highway setbacks are 60 feet from the property line or 110 feet from the centerline, while other streets require 50 feet or 80 feet, respectively.
Side setbacks are generally 20 feet, and rear setbacks are 40 feet. Nonagricultural homes must also observe separation requirements from certain occupied livestock facilities, beginning at one-quarter mile for operations containing 50 to 1,000 animal units.
Before buying agricultural land for a modular home, homeowners should contact the Jo Daviess County Planning and Development Department in Galena to confirm residential eligibility.
Does Johnson County, Illinois Allow Modular Homes?
Yes, Johnson County allows modular homes; however, homeowners should confirm whether their proposed building site is governed by county regulations or municipal zoning before preparing plans for a modular home. The City of Vienna, for example, maintains its own zoning code under Chapter 154, covering permitted land uses, lot access, building placement, and dimensional standards. Requirements within Vienna should not be applied automatically to rural property elsewhere in Johnson County.
For properties without public utilities, the location and approval of a private sewage system can significantly influence where a modular home is placed. Properties within Vienna should also be reviewed against the city’s zoning map and applicable district regulations, while rural landowners should contact Johnson County officials in Vienna to determine whether any permits or land-use restrictions apply.
Obtaining written confirmation of the property’s residential eligibility and required approvals before purchasing a modular home can help prevent costly changes to the building site.
Does Kane County, Illinois Allow Modular Homes?
Yes, Kane County enforces detailed zoning and subdivision standards for modular home construction in its unincorporated areas.
Section 25-7-5-2 generally requires buildings to be set back at least 35 feet from the road right-of-way, with a 50-foot minimum along limited-access roads. Under Section 25-7-5-1, principal buildings must ordinarily be at least 10 feet from adjoining property lines, although certain legally established narrow residential lots may qualify for a reduced five-foot minimum.
Additional district-specific requirements can apply, making the property’s zoning designation essential when calculating the allowable building footprint.
Minimum lot sizes also depend on utility availability and the property’s zoning classification.
Kane County’s subdivision regulations identify minimum residential lot areas of 40,000 square feet where individual water and septic systems are used, 30,000 square feet where public water is available without public sewer, 20,000 square feet where public sewer is available without public water, and 10,000 square feet where both services are available, subject to zoning district requirements. Corner residential lots generally require an additional 10 feet of width to accommodate setbacks along both roads.
Homeowners should consult Kane County’s Building and Zoning Division to verify zoning, utility availability, recorded subdivision restrictions, and the necessary building permits before finalizing their modular home’s dimensions and site plan.
Does Kankakee County, Illinois Allow Modular Homes?
Yes, Kankakee County allows modular homes, but specific residential setbacks for new homes in unincorporated areas vary considerably between agricultural and residential zoning districts. In the A-1 Agricultural District, principal buildings require a 50-foot front setback, 30-foot interior side setbacks, and a 100-foot rear setback.
The A-2 Agricultural Estate District requires 50 feet at the front and rear and 20 feet along interior side property lines. For properties zoned R-1 Residential, the requirements decrease to 30 feet in front, 6 feet along interior sides, and 40 feet in the rear. Corner lots face additional restrictions, including a 30-foot street-side setback in R-1.
Homeowners should also consider the placement of detached garages or other accessory structures, which generally must remain at least 10 feet from the principal dwelling and 5 feet from interior lot lines. These measurements can affect the available space for a modular home, particularly on narrower residential lots.
Anyone evaluating a potential building site should contact the Kankakee County Planning Department at 815-937-2940 to identify the property’s zoning district, confirm setbacks and minimum lot requirements, and obtain the necessary construction permit information.
Does Kendall County, Illinois Allow Modular Homes?
Absolutely, Kendall County regulates modular home construction through its Planning, Building and Zoning Department, which administers development regulations in unincorporated areas and the villages of Millbrook and Plattville.
Homeowners must obtain building permits for new residential construction and comply with the applicable zoning district’s requirements for minimum lot area, setbacks, building height, and permissible land uses.
The county also maintains parcel-level zoning information through its GIS mapping system, allowing residents to identify their property’s designation before developing building plans.
Kendall County’s building regulations include locally amended provisions of the International Residential Code, while the Health Department separately reviews private water and wastewater arrangements. Properties without public utilities require particular attention because an adequate septic area and drinking-water supply must be demonstrated before certain developments can proceed.
Rather than assuming that a particular home will fit based only on acreage, prospective buyers should provide a parcel identification number and proposed site plan to the Kendall County Planning, Building and Zoning Department.
Does Knox County, Illinois Allow Modular Homes?
Yes, Knox County allows modular homes and publishes particularly useful residential building setbacks for homeowners planning modular construction in unincorporated areas. According to its new-home construction checklist, properties zoned R Residential require 30-foot front and rear setbacks and 10-foot setbacks from each side property line.
Properties zoned A Agricultural or C Conservation require 50-foot front and rear setbacks and 20-foot side setbacks. These requirements should be confirmed against the property’s zoning designation and any additional restrictions before preparing the foundation.
New residential construction requires a county zoning permit, with a nonrefundable $25 application fee. Applicants must submit two sets of construction plans, a site map, and authorization for inspections. Where a private well or septic system is required, approval must be obtained from the Knox County Health Department before the building permit can be issued.
Previously undisturbed property may also require an Illinois Department of Natural Resources EcoCAT consultation, with the county checklist identifying a $125 consultation fee. Homeowners can discuss their plans with Zoning Officer Missi Wheeler at 309-345-3840 or melissa.wheeler@knoxcountyil.gov and coordinate well and septic approvals through the Health Department at 309-344-2224.
Does Lake County, Illinois Allow Modular Homes?
Yes, Lake County allows modular homes and maintains a detailed Unified Development Ordinance regulating new modular homes in unincorporated areas, with minimum lot sizes and setbacks determined by zoning district.
In the R-1 Residential District, the minimum lot area is 40,000 square feet, with a minimum width of 130 feet, a 30-foot street setback, at least 13 feet along either individual side, a combined side-yard requirement of 33 feet, and a 30-foot rear setback.
The R-2 district permits lots as small as 20,000 square feet, while R-3 allows 12,000-square-foot lots. Agricultural and Rural Estate districts are considerably more restrictive, generally requiring at least 200,000 square feet, or approximately 4.59 acres.
The county also limits impervious surface coverage, an important consideration when combining a modular home’s footprint with driveways, patios, and detached structures. For example, R-1 properties have a maximum impervious surface ratio of 0.20, while R-2 and R-3 properties allow 0.30. Lake County’s updated residential and building codes took effect July 12, 2026, including locally amended provisions of the 2024 International Residential Code.
Before selecting a modular home model, property owners should contact the Lake County Planning, Building and Development Department at 847-377-2600 to verify lot eligibility, building dimensions, site-development restrictions, and the current permitting requirements.
Does LaSalle County, Illinois Allow Modular Homes?
Yes, LaSalle County allows modular home construction as long as you obtain the required building permits for residential construction and meet detailed zoning requirements for properties in unincorporated areas.
In the RR Rural Residence District, single-family homes generally require a minimum lot area of one acre and a minimum width of 150 feet. Side and rear setbacks are both 10 feet, while front setbacks depend on the adjoining roadway. Homes must be at least 70 feet from the centerline of a township road, 85 feet from a county road, or 100 feet from a state road. Regardless of roadway classification, the building must also maintain at least 30 feet of separation from the road right-of-way or roadway easement.
LaSalle County updated its building codes effective January 1, 2025, adopting locally amended versions of the 2024 International Residential Code, International Building Code, and other construction standards.
The county also specifies a 107 mph wind-load requirement in its published building-code amendments, an important consideration for the engineering and foundation design of modular homes.
Homeowners should contact the LaSalle County Land Use Department to verify legal lot eligibility, applicable zoning, foundation requirements, and the building permit process before scheduling construction.
Does Lawrence County, Illinois Allow Modular Homes?
Yes, Lawrence County can construct a modular home, but homeowners considering modular home construction should first confirm whether their property falls within the zoning jurisdiction of Lawrenceville or another municipality.
Within Lawrenceville, new residential construction requires a building permit, and the proposed project must comply with current zoning regulations before a permit can be purchased. Applicants must provide a description of the planned improvements and their dimensions. The city’s requirements should not automatically be applied to unincorporated properties elsewhere in Lawrence County, where a uniform countywide residential setback schedule could not be verified.
For rural properties without municipal water and sewer connections, the Lawrence County Health Department administers private septic system and water well permits and inspections. These approvals are important when determining the usable building area, since the location of a well, wastewater system, and replacement septic area can affect foundation placement.
Homeowners planning to build within Lawrenceville should contact City Clerk Rodney Nolan at 618-943-2116 or cityclerk@lawrencevilleil.org to review zoning and building permits, while those developing rural property can arrange well and septic guidance through the Lawrence County Health Department at 618-943-3302.
Does Lee County, Illinois Allow Modular Homes?
Yes, Lee County allows modular home construction, with setback requirements for properties in unincorporated areas determined by the property’s zoning classification.
In residential districts, principal buildings generally require 25 feet of separation from the front property line and 7 feet from both side and rear property lines.
Agricultural properties have different requirements, including 15-foot side and rear setbacks. Agricultural road setbacks depend on the roadway classification, with buildings required to remain at least 60 feet from the centerline of township roads, 75 feet from county highway centerlines, and 50 feet from state highway rights-of-way.
Lee County requires building permits for residential construction and a site plan showing the proposed structure’s location and dimensions. Applicants can submit a parcel map with the building footprint and measurements marked directly on it.
The county’s online site-plan instructions indicate an expected response within one to three business days, although this is not a guarantee of permit approval. Homeowners must also verify separate Health Department setback requirements, especially for wells and septic systems.
To prepare for a modular home installation, residents should consult Zoning Administrator Alice Henkel or Building Official Joe Bay at 815-288-3643 and coordinate environmental health requirements with the Lee County Health Department at 815-284-3371.
Does Livingston County, Illinois Allow Modular Homes?
Yes. Livingston County allows modular home construction and has adopted zoning regulations under Chapter 156 of its county code, establishing different land-use classifications and dimensional requirements for development.
Homeowners considering modular homes should determine whether single-family residential construction is permitted in the property’s zoning district and whether the lot satisfies minimum area, width, depth, and access requirements. The ordinance also addresses building placement in relation to local roads, county highways, and state highways, making road classification an important part of site planning.
Before choosing a foundation location, homeowners should distinguish between standard residential districts and other zoning classifications. For example, Section 156.136 establishes a minimum lot area of 5,000 square feet, a width of 50 feet, and a depth of 100 feet for the district governed by that section.
These measurements are not universal residential standards and should not be used to determine eligibility for a modular home without confirming the property’s district.
Property owners should review the Livingston County zoning regulations and obtain confirmation from the county’s zoning administration in Pontiac regarding permitted residential uses, required setbacks, lot eligibility, and any necessary permits before ordering a modular home.
Does Logan County, Illinois Allow Modular Homes?
Yes, modular homes are allowed in Logan County. The county requires building permits for new residential construction, including modular homes, and publishes specific setbacks for agricultural and residential zoning districts.
In the R-1, R-2, and R-3 Single-Family Residential Districts, principal buildings generally require a 25-foot front setback, a 30-foot rear setback, and side setbacks equal to 10% of the lot width. For example, a property measuring 100 feet wide would require a 10-foot side setback under this standard.
Agricultural districts establish roadway setbacks rather than the same conventional residential yard schedule, requiring 100 feet from federal highway rights-of-way, 50 feet from state highway rights-of-way, and 35 feet from county or township road rights-of-way.
Building permits are necessary not only for new homes but also for additions, decks, storage structures, and certain other improvements. Homeowners may also need private access permits, floodplain development approvals, and well or septic permits depending on the property’s conditions.
Logan County provides separate applications for new residential construction and private roadway access, making it important to evaluate the site before beginning work.
Residents can verify their zoning district, calculate the applicable setbacks, and obtain construction application materials from the Logan County Zoning Office at 217-732-4773 or zoning@logancountyil.gov, located at 529 South McLean Street in Lincoln.
Does Macon County, Illinois Allow Modular Homes?
Yes, Macon County regulates modular home construction through its zoning ordinance. These building permit requirements and subdivision regulations apply in unincorporated areas. The R-1 Single-Family Residential District generally requires a minimum lot area of one acre, a minimum width of 100 feet, a 35-foot front setback, 15-foot setbacks along each side, and a 50-foot rear setback.
The R-4 district also requires a one-acre lot and 100-foot width, but its combined side-yard requirement increases to 30 feet. Agricultural zoning is considerably more restrictive, with the A-1 district generally requiring 10 acres and a minimum lot width of 190 feet, subject to exceptions that can permit certain smaller parcels.
In the A-1 district, the published dimensional schedule specifies a 50-foot front setback, 50-foot side setbacks, and a 50-foot rear setback. The county also establishes a 35-foot maximum building height in these residential and agricultural classifications.
New residential construction requires a building permit, and the county administers zoning, subdivision, floodplain, and stormwater regulations. Beginning work without a permit results in a doubled permit fee under the county’s published policy.
Homeowners can review their proposed modular home plans with Macon County Planning and Zoning Director Amy McKinney at 217-424-1466 or amckinney@maconcounty.illinois.gov to confirm land eligibility, dimensional requirements, and construction inspections before work begins.
Does Macoupin County, Illinois Allow Modular Homes?
Yes, Macoupin County does not enforce general zoning regulations in its unincorporated areas, but homeowners planning a modular home may still need county permits, particularly when the property requires a private septic system.
The county’s Building Program Permit costs $100 and applies to new construction requiring septic service in unincorporated areas. Additional environmental permits may be necessary, including a $300 private septic system permit and a $100 permit for drilling a private water well. These costs are particularly relevant when comparing undeveloped rural property with land already served by utilities.
The absence of county zoning does not mean every modular home site is automatically suitable for construction. Municipalities establish their own zoning rules, while recorded subdivision restrictions, road access requirements, and septic limitations can still affect a property.
Homeowners planning construction outside municipal boundaries can contact Macoupin County GIS Manager and Plat Officer Aaron Coe to discuss the Building Program Permit and property records, then arrange septic or well approvals through the Macoupin County Public Health Department at 217-839-4111.
Does Madison County, Illinois Allow Modular Homes?
Yes, Madison County allows modular homes and has detailed zoning requirements for modular homes in unincorporated residential districts, including minimum lot sizes, setbacks, and building coverage limitations.
Under Section 93.025 of the county zoning code, the R-1 district requires at least 40,000 square feet of lot area and a minimum width of 150 feet. Front and rear setbacks are both 40 feet, while side setbacks are 25 feet. Buildings and accessory structures cannot occupy more than 15% of the lot, and the minimum dwelling floor area is 620 square feet.
These requirements make the property’s usable building footprint an important consideration when selecting a modular home and planning additional structures.
The county’s higher-density residential districts allow smaller lots. R-2 generally requires 15,000 square feet and a 100-foot width, while R-3 permits lots of at least 9,000 square feet and a width of 70 feet. The R-3 district establishes a 25-foot front setback, 30-foot rear setback, and side setbacks based on 10% of the lot width, subject to additional access provisions.
Rather than selecting a home based solely on acreage, prospective buyers should consult the Madison County Building and Zoning Department to verify their zoning district, permitted residential use, lot coverage, and required building permits before preparing a site plan.
Does Marion County, Illinois Allow Modular Homes?
Modular homes are allowed in Marion County. The county administers a county zoning office that homeowners should consult before installing a modular home on property in an unincorporated area.
Homeowners should establish whether the proposed building site is eligible for a single-family dwelling, whether additional subdivision or land-use approvals are required, and whether the property can support the necessary utility connections. Marion County’s Health Department handles environmental health matters, while the Highway Department can assist with county roadway questions.
For guidance on zoning classification and applicable setbacks, property owners can call the Marion County Zoning Office at 618-548-3853, then coordinate well and septic requirements with the Health Department at 618-548-3878 or roadway access questions with the Highway Department at 618-548-3887.
Does Marshall County, Illinois Allow Modular Homes?
Yes, Marshall County allows modular homes and establishes clear residential development requirements through its zoning ordinance, making it important for modular home buyers to confirm both the zoning district and the size of the proposed lot.
Under Section 8.1-4, the R-1 district requires a minimum lot area of three acres and a width of at least 300 feet at the established building line. Section 8.1-5 requires minimum front, side, and rear setbacks of 50 feet each, although the front setback may be affected by the placement of existing buildings on certain developed blocks. These requirements can substantially limit the options available for smaller rural parcels.
The county requires building permits and administers separate applications for variances, special uses, and zoning amendments.
Homeowners considering a three-acre residential parcel or another property in Marshall County can contact Zoning Administrator Ryan Giacometti at 309-246-6401 or rgiacometti@marshallcountyillinois.gov to confirm permitted construction, applicable district setbacks, and the documents needed for a building permit.
Does Mason County, Illinois Allow Modular Homes?
Yes, Mason County allows and regulates modular construction and residential development through a zoning ordinance and a separate floodplain ordinance, both administered through its county zoning office.
Homeowners planning modular construction must verify whether single-family dwellings are permitted within their property’s zoning classification and whether the proposed site satisfies applicable lot dimensions and building setbacks. The county publishes its zoning ordinance and floodplain regulations, but the specific numerical residential setback schedule was not independently established from the reviewed material. These figures should therefore be confirmed for the property’s district before choosing the foundation location.
Floodplain requirements deserve particular attention in Mason County, especially for land near the Illinois and Sangamon Rivers. Some sites may require elevation documentation or development approval before construction, while properties without public sewer access must be evaluated for a suitable private wastewater system.
Homeowners can discuss zoning, site restrictions, and floodplain compliance with Mason County Code Enforcement Officer Jen Dye.
Does Massac County, Illinois Allow Modular Homes?
Yes, Massac County allows modular homes, and homeowners should determine whether their proposed modular home site is governed by municipal zoning or other county development requirements.
The City of Metropolis, for example, enforces zoning regulations within its corporate boundaries and certain adjoining territory extending as much as 1.5 miles beyond city limits. Its zoning code establishes permitted uses, lot dimensions, building setbacks, and residential development standards.
These rules may apply to properties that appear rural but fall within the city’s extraterritorial jurisdiction.
For properties elsewhere in Massac County, a comprehensive countywide residential setback schedule could not be verified from the published materials reviewed. However, the Massac County Supervisor of Assessments maintains building permit forms and parcel information that can help homeowners establish the appropriate approval process.
Those considering land near Metropolis should first contact the city’s Building and Zoning Department at 618-524-3411 or cmurray@metropolisil.gov. For other properties, homeowners can reach Massac County Supervisor of Assessments Maureen Stafford at 618-524-9632 or mstafford@massaccountyil.gov to request building permit information and determine which local offices should review their proposed development.
Does McDonough County, Illinois Allow Modular Homes?
Yes, McDonough County allows modular home construction, but homeowners planning a modular residence should first establish whether their property falls within Macomb, another incorporated municipality, or an unincorporated area.
Local zoning and building requirements can differ between these jurisdictions, particularly concerning minimum lot area, building setbacks, and residential construction permits.
Developing rural land may also require coordination concerning private sewage disposal, water wells, roadway access, and floodplain conditions. For a modular home, these considerations should be resolved before determining the foundation footprint, since equipment access and utility separation distances can affect the usable building site.
Homeowners can begin with McDonough County government in Macomb and the McDonough County Health Department to identify the appropriate permitting authorities, establish whether a private sewage system can be approved, and confirm any local residential construction restrictions before ordering their home.
Does McHenry County, Illinois Allow Modular Homes?
Yes, McHenry County allows and regulates modular home construction through its Unified Development Ordinance, which establishes separate agricultural, estate, and residential zoning districts. These include A-1 and A-2 Agricultural, E-1 through E-5 Estate, and R-1 Single-Family Residential. The county’s regulations generally limit agricultural and residential lots to one dwelling unit, with specified exceptions for qualifying ancillary dwellings and certain other districts.
Building setbacks depend on the zoning classification and may also be influenced by recorded subdivision plats or existing neighborhood development patterns. Where 60% of the same side of a block is developed, the ordinance allows certain street setbacks to be determined using the average placement of existing homes, subject to additional conditions and a general 10-foot minimum without a variation.
McHenry County also provides relief for certain legally established nonconforming lots. For example, an interior lot narrower than 100 feet may qualify for a reduced 10-foot setback on one side and a setback equal to 10% of its width on the other.
New single-family residences require building permit documentation, including a plat of survey, site plan, construction drawings, approved septic information where applicable, and access permits or signoffs.
Homeowners should send their parcel information and proposed modular home dimensions to the McHenry County Department of Planning and Development at 815-334-4560 or plandev@mchenrycountyil.gov to confirm the applicable zoning standards and building permit requirements.
Does McLean County, Illinois Allow Modular Homes?
Yes, McLean County allows modular home construction and requires construction permits for new residential homes in unincorporated areas and administers zoning regulations that establish permitted uses, building placement, and minimum development standards.
Under the published zoning ordinance’s agricultural district provisions, residential structures generally require at least 30 feet of exterior setback, 20 feet from each interior side property line, and 40 feet from the rear property line.
Certain existing residential lots narrower than 100 feet may qualify for a reduced five-foot side setback under the ordinance’s conditions. These requirements should be verified against the property’s specific zoning classification and any applicable roadway restrictions.
Construction permits must be obtained before work begins, with inspections generally conducted at three stages: initial stakeout, foundation construction, and completion before occupancy. Homeowners dividing existing agricultural land should also determine whether subdivision approval is required, since even the creation of a single residential lot can trigger county review.
Floodplain development is separately regulated, with certain properties requiring certified elevation information.
Residents can contact the McLean County Building and Zoning Department at 309-888-5160 or visit its office at 115 East Washington Street, Room M102, in Bloomington to verify their lot’s eligibility, obtain permit applications, and discuss the site inspections necessary for their modular home.
Does Menard County, Illinois Allow Modular Homes?
Yes, Menard County allows and adopted an updated zoning ordinance dated November 25, 2025, which expressly permits one single-family dwelling or one modular dwelling unit in the R-1 Single-Family Residential District while distinguishing modular dwellings from mobile homes.
This provision is particularly helpful for prospective modular home buyers because it establishes modular housing as a recognized residential use within the district. The ordinance also permits attached or detached garages and generally provides for two to four off-street parking spaces associated with the residence.
The updated regulations establish a minimum residential lot width of 60 feet with 60 feet of public road frontage in the R-1 district, increasing to 200 feet of width and road frontage where the parcel obtains direct access from a state or Menard County highway.
Applicable setbacks must be determined under the ordinance’s roadway and yard provisions, which take account of the road right-of-way and the property’s zoning classification.
Homeowners should review Chapter 7 of the November 2025 Menard County Zoning Ordinance and contact the county zoning office through Menard County government in Petersburg to confirm the applicable lot area, setbacks, parking requirements, and permit process before selecting a modular home site.
Does Mercer County, Illinois Allow Modular Homes?
Yes, Mercer County requires building permits for residential construction in areas governed by its county zoning regulations, including new modular homes. Its published building permit application establishes a fee of $25 plus $5 for every $1,000 in proposed improvements.
For example, a modular home project valued at $200,000 would have a calculated county permit fee of $1,025 under this formula. Applicants must provide their parcel number, legal property description, proposed building dimensions, and a sketch showing the location of the home and required setbacks.
The county’s permit materials also include setback guidance that should be reviewed against the property’s zoning district before locating the foundation.
Properties within Aledo are subject to additional municipal building regulations. The city enforces the 2021 International Residential Code, along with adopted electrical, plumbing, mechanical, and fire codes, and provides a separate application for new residential construction.
Homeowners considering an unincorporated property should contact the Mercer County Zoning Office at 309-525-3799 or zoning@mercercountyil.org to verify applicable setbacks, construction permits, and land-use restrictions.
Those building within Aledo can coordinate plan reviews and inspections with the city’s Code Administration Department at 309-582-7241, extension 205.
Does Monroe County, Illinois Allow Modular Homes?
Yes. Monroe County regulates new modular home construction through its zoning and building ordinances, including Chapter 40 of the county code and Schedule 2A, which establishes dimensional standards for different zoning districts.
Homeowners must confirm that single-family residential construction is permitted on their property and that the proposed home meets the applicable minimum lot size, width, setback, and building-height requirements. The county also requires lots to have at least 50 feet of frontage along a public street or road, except where an approved planned unit development provides otherwise.
Monroe County’s ordinance contains an additional provision for established neighborhoods. Where at least 50% of the frontage on one side of a block has been developed and existing front setbacks differ by no more than 10 feet, the required front setback may follow the average of neighboring buildings.
Even in these situations, the ordinance generally establishes a minimum of 15 feet and does not require more than 50 feet under that provision. Building permit fees are calculated at $5 per $1,000 of project value, plus $70 per inspection.
Homeowners can review their proposed modular home’s dimensions with Zoning Administrator Chris Voelker at 618-939-8681, extension 260, or zoning@monroecountyil.gov before submitting construction plans.
Does Montgomery County, Illinois Allow Modular Homes?
Yes, Montgomery County allows modular home construction, but rules must be confirmed locally.
Montgomery County has an important distinction for modular home buyers as the county government confirms that there is no general zoning ordinance in its rural areas. Consequently, unincorporated properties are not subject to a countywide residential zoning setback schedule, although state regulations, private restrictions, and other applicable development requirements can still affect construction.
The county also does not issue conventional building permits. Instead, it uses Structural Improvement Permits to record new construction for property assessment purposes. These permits should not be confused with building-code or zoning approval.
Properties within municipalities such as Hillsboro may have separate requirements. Hillsboro, for example, uses a combined Application for Building Permit and Certificate of Zoning Compliance for new single-family residences. This means the required approvals may differ substantially depending on which side of a municipal boundary a property occupies.
Rural homeowners can contact Montgomery County’s Supervisor of Assessments at 217-532-9595 to clarify the Structural Improvement Permit process and consult the Health Department at 217-532-2001 about private water and wastewater requirements. Those building within an incorporated community should also obtain the local zoning and building requirements before preparing their foundation.
Does Morgan County, Illinois Allow Modular Homes?
Yes, Morgan County allows modular homes, yet homeowners should establish whether their proposed modular home site falls within Jacksonville or another incorporated municipality before determining which development regulations apply.
The county maintains a Regional Planning Commission and geographic information system, while Jacksonville administers its own zoning and permitting processes.
One useful resource for prospective buyers is Morgan County’s online parcel mapping system, which provides information about property boundaries, road centerlines, addresses, and other geographic features. These records can help identify potential access limitations and determine which local government should review a construction proposal, although GIS information does not replace a legal survey.
Homeowners can begin by contacting the Morgan County Regional Planning Commission at 217-243-9404 to determine whether county or municipal approval is required. Additional parcel mapping assistance is available from Morgan County GIS at 217-245-6798 or sartis@morgancounty-il.com.
Does Moultrie County, Illinois Allow Modular Homes?
Yes, Moultrie County allows modular homes and construction; they have published specific roadway setback requirements for residential construction, making it important for modular home buyers to identify the road classification adjoining their property.
According to the county’s residential building permit application, homes must be set back at least 100 feet from the centerline of a state or federal highway, 75 feet from a state-aid route, 65 feet from a county road, and 60 feet from a township road.
The application also identifies a 50-foot street right-of-way setback category. Homeowners should confirm the applicable measurement reference before using these figures to position a foundation.
The county requires a residential building permit application containing property information, the proposed construction location, contractor details, and the setback distance from the road. Applicants should also determine whether the proposed development needs private sewage approval or additional zoning review, particularly on agricultural property.
Before arranging a modular home delivery, homeowners can contact Moultrie County Planning and Zoning at 217-728-7922, located at 10 South Main Street, Suite 1, in Sullivan, to review roadway setbacks, land-use requirements, and the documentation needed for a residential building permit.
Does Ogle County, Illinois Allow Modular Homes?
Yes modular homes are permitted Ogle County. Ogle county has detailed zoning regulations governing single-family residential construction, including modular homes, in unincorporated areas. Its published zoning schedule identifies a minimum lot size of three acres and a width of 300 feet in the R-1 Rural Residential District.
The R-2 Single-Family Residential District generally requires two-acre lots with a minimum width of 130 feet, subject to exceptions based on the availability of public water and sewer facilities.
Agricultural districts can be more restrictive, with AG-1 generally requiring 40 acres and the IA Intermediate Agricultural District requiring 10 acres for ordinary permitted uses.
Creating a nonfarm residential lot within AG-1 can require special-use approval, even when the proposed lot contains at least one acre and measures 150 feet wide.
Setbacks also vary by district and roadway classification. In AG-1, buildings must remain at least 80 feet from the right-of-way of federal or state highways, 60 feet from county highway rights-of-way, and 40 feet from township road rights-of-way.
Side setbacks are 25 feet, and rear setbacks are 50 feet. The R-2 district has a 30-foot rear setback, with other dimensional requirements determined by the ordinance.
Homeowners considering farmland or a newly divided residential parcel should consult the Ogle County Planning and Zoning Department before purchasing land to determine whether residential construction is permitted and whether special-use approval is required.
Does Peoria County, Illinois Allow Modular Homes?
Yes! Peoria County regulates residential construction, including modular home builds in unincorporated areas, through its Unified Development Ordinance, which establishes minimum lot sizes, setbacks, and lot coverage standards.
In the R-1 Low Density Residential District, single-family residential development generally requires a minimum lot area of one-half acre, equivalent to 21,780 square feet. Lots served by private septic systems must have at least 125 feet of width at the building line, while those connected to public sewer require 100 feet. The district also limits total building coverage to 30% of the lot, which includes the footprints of the home and other structures.
The R-1 district requires 15-foot side setbacks and a 25-foot rear setback for principal residential buildings. Roadway setbacks depend on the classification of the adjoining street. Properties along state highways must generally maintain 75 feet from the right-of-way or 135 feet from the road centerline, whichever is greater. The required distance is 75 feet along county primary roads, 40 feet along county non-primary roads and collector streets, and 25 feet along local streets, measured from the applicable right-of-way.
Before choosing a modular home’s size or orientation, homeowners should verify the property’s district and roadway classification with Peoria County’s Planning and Zoning authorities, paying particular attention to septic requirements and allowable lot coverage.
Does Perry County, Illinois Allow Modular Homes?
Yes, Perry County allows modular homes and requires building permits for new residential structures, including modular homes; homeowners must obtain a Certificate of Zoning Compliance before submitting a building permit application.
This zoning approval must come from the authority responsible for the property’s location, whether it is in an unincorporated area or within a municipality such as Pinckneyville or Du Quoin. The county requires building permits for constructing, enlarging, altering, or relocating structures, but exempts structures smaller than 100 square feet from its general building permit requirement.
Residential building permit fees are calculated at $5 plus $0.02 per square foot. Under this schedule, a 1,500-square-foot modular home would have a county building permit fee of $35, while a 2,000-square-foot home would cost $45. These amounts do not include additional site-development, utility, or zoning-related expenses. Violations of the county’s building permit resolution can result in fines ranging from $25 to $500.
Homeowners planning construction in unincorporated Perry County should first contact Zoning Administrator Becky Tracy at 618-357-3267 to obtain their zoning compliance certificate, then submit the required building information through the Perry County Supervisor of Assessments Office.
Does Piatt County, Illinois Allow Modular Homes?
Yes, Piatt County allows modular home construction so long as the required building permits are obtained and specific application, fee, and construction-timeline requirements are met.
Homeowners must submit a completed building permit application, site plan, building plans, and construction specifications to the county zoning office. Residential permit fees are calculated at $12 per 100 square feet of new construction, making the estimated permit cost $180 for a 1,500-square-foot modular home or $240 for a 2,000-square-foot home. Starting construction without first obtaining the required building permit doubles the applicable fee.
The county also requires construction to begin within six months after permit issuance, and the permit remains valid for two years. Minimum yard setbacks are governed by Article VII of the Piatt County Zoning Ordinance and must be verified for the property’s zoning district.
Before a permit can be issued, the DeWitt-Piatt Bi-County Health Department must approve applicable water supply and wastewater provisions, particularly when a new private well or septic system is proposed.
To avoid delays after ordering a modular home, prospective buyers should contact Piatt County Zoning Officer Keri Nusbaum at 217-762-3111 or zoning@piattcounty.org to verify site eligibility, required setbacks, and the permits necessary for foundation preparation and installation.
Does Pike County, Illinois Allow Modular Homes?
Yes! Pike County specifically recognizes modular homes in its residential building permit application, distinguishing single-family modular construction from site-built residences and mobile homes. The county requires zoning and building permits for new residential structures and maintains a published fee schedule based on dwelling size.
Homes smaller than 1,500 square feet have a $50 permit fee, homes measuring 1,501–2,000 square feet cost $100, and homes measuring 2,001–2,500 square feet cost $150. The published schedule contains an inconsistency in its final size category, so the fee for larger homes should be confirmed directly with the Zoning Administrator.
Pike County’s application requires the property’s zoning district, parcel number, legal description, proposed use, and floodplain status, along with review involving the Highway and Health Departments where applicable.
Beginning construction without a building permit results in a fee equal to twice the standard amount. Homeowners requiring a zoning variance or conditional-use approval should also budget for the county’s published $350 application fee for either procedure.
Residents can obtain the required forms and verify district-specific setbacks through Pike County Zoning Administrator Greg Wyatt at 217-285-4013 or gwyatt@pikecountyil.org before beginning foundation work or arranging modular home delivery.
Does Pope County, Illinois Allow Modular Homes?
Yes, Pope County homeowners considering modular home construction should pay particular attention to property access, terrain, and floodplain conditions.
Much of the county is rural, and properties near the Ohio River or its tributaries may require flood hazard evaluations before a permanent foundation can be installed.
A comprehensive countywide residential zoning ordinance establishing uniform minimum lot sizes or building setbacks could not be verified from the publicly available sources reviewed.
Homeowners should therefore confirm whether their property is subject to county development requirements, municipal restrictions, or recorded subdivision covenants before finalizing their plans.
For undeveloped rural properties, the availability of an approved septic system, a suitable building pad, and adequate access for large modular home sections can influence the total project cost. Land located on slopes or along narrow rural roads may require additional grading, drainage improvements, or transportation arrangements.
Property owners should contact the Pope County Clerk’s Office at 618-683-4466, located at 310 East Main Street in Golconda, to identify applicable county ordinances and the appropriate offices for reviewing floodplain restrictions, roadway access, and residential construction requirements.
Does Pulaski County, Illinois Allow Modular Homes?
Yes, Pulaski County has significant floodplain considerations that homeowners should evaluate before purchasing land for a modular home. According to the county’s hazard mitigation planning documentation, Pulaski County participates in the National Flood Insurance Program and maintains a floodplain zoning ordinance, with the county’s original participation dating to May 17, 1974. Several municipalities, including Mound City, Mounds, and Olmsted, also have separate floodplain regulations. These requirements can affect foundation elevation, site preparation, and permissible development on properties near the Ohio and Mississippi Rivers.
A uniform countywide residential setback schedule could not be verified, making it important to distinguish general residential construction requirements from floodplain regulations. Homeowners should check whether their parcel lies within the mapped 1%-annual-chance floodplain and obtain any necessary development approvals before grading, filling, or foundation construction.
Pulaski County’s Supervisor of Assessments also serves as the county floodplain coordinator. Residents can contact that office at 618-748-9321, located at 500 Illinois Avenue in Mound City, to confirm flood hazard designations and determine which additional local approvals apply to their proposed modular home.
Does Putnam County, Illinois Allow Modular Homes?
Yes, Putnam County allows and regulates modular home construction under its residential zoning ordinance, which was updated September 16, 2024.
The ordinance establishes zoning districts, permitted land uses, yard requirements, and dimensional standards for development in unincorporated areas. Land without an established zoning classification is generally treated as AG-1 Agricultural until otherwise classified through the county’s zoning amendment process.
This is important for modular home buyers because purchasing agricultural property does not automatically establish the right to divide it into smaller residential lots or construct an additional dwelling.
Homeowners should identify the property’s zoning district before determining the appropriate foundation location. The ordinance prohibits new buildings that do not comply with their district’s permitted uses and required open spaces, and existing lots generally cannot be reduced in size if doing so would violate minimum yard requirements.
Applicants should also account for private sewage approval, driveway access, and any special restrictions affecting agricultural subdivisions.
Before ordering a modular home, property owners should review the September 2024 Putnam County Zoning Ordinance and request the applicable numerical setbacks, minimum lot dimensions, and permit procedures from the county’s Zoning Enforcement Officer.
Does Randolph County, Illinois Allow Modular Homes?
Yes, modular homes are allowed in Randolph County. Randolph County establishes specific dimensional standards for residential construction in its zoning ordinance. In the R-1 Residential District, new homes generally require a minimum lot area of one acre, equivalent to 43,560 square feet, with a minimum width and depth of 150 feet.
Required setbacks are 50 feet from the front property line, 25 feet from each side, and 25 feet from the rear. The maximum building height is 35 feet. For properties zoned R-2, the minimum lot area is 12,000 square feet, with a minimum width of 50 feet and depth of 100 feet, while setbacks decrease to 25 feet in front, 7 feet along the sides, and 25 feet in the rear.
Agricultural zoning is considerably more restrictive, with a general minimum lot area of 30 acres, minimum lot dimensions of 800 feet, and setbacks of 50 feet in front and 25 feet along the sides and rear.
The county also requires at least one acre for certain lots using private soil-absorption sewage systems, even where a zoning district would otherwise allow a smaller lot. Randolph County generally permits only one dwelling per lot, subject to specified exceptions.
Homeowners can review Section 40-4-30 of the county’s zoning ordinance and consult the Randolph County zoning administration to verify their parcel’s eligibility, required setbacks, floodplain designation, and construction approvals before selecting a modular home design.
Does Richland County, Illinois Allow Modular Homes?
Yes, Richland County allows modular homes, but homeowners planning a modular home should consider roadway access and floodplain conditions before determining the home’s placement.
The Richland County Highway Department oversees approximately 142 miles of county highways and assists nine township road districts. The County Engineer also serves as the county Floodplain Administrator, making the Highway Department an important contact for properties near regulated waterways or roads requiring new entrances.
Transportation requirements are another consideration, particularly for modular homes delivered in large sections. Richland County maintains seasonal weight restrictions on county highways, generally during the January 15 through April 15 period, although restrictions may be lifted depending on ground conditions.
Township roads can have separate limitations that must be confirmed with the appropriate road commissioner.
Homeowners should coordinate with the Richland County Highway Department before scheduling delivery to determine whether roadway restrictions, entrance improvements, or floodplain approvals will affect their project, while separately confirming any local residential construction permits and private sewage requirements.
Does Rock Island County, Illinois Allow Modular Homes?
Yes, Rock Island County has detailed zoning regulations establishing minimum lot sizes and setbacks for modular home construction in unincorporated areas. The R-1 Single-Family Dwelling District generally requires a minimum lot area of 20,000 square feet and a width of 100 feet for properties without central or municipal sewer service.
Required setbacks are 40 feet from the front, 15 feet from either side, with a combined side-yard width of 30 feet, and 40 feet from the rear. When central or municipal sewer service is available, the ordinance permits certain smaller R-1 lots of 7,500 square feet, with a minimum width of 75 feet, a 25-foot front setback, and a 35-foot rear setback. Side setbacks depend on whether the home is one story or two stories.
Agricultural and suburban estate districts have significantly larger land requirements. AG-1 Agricultural Preservation generally requires 40 acres, AG-2 General Agricultural requires 15 acres, SE-1 Suburban Estates requires five acres, and SE-2 requires one acre, subject to applicable exceptions. Rock Island County reviews construction plans, issues building and occupancy permits, and performs inspections in unincorporated areas.
Homeowners should confirm their property’s zoning classification through the county’s GIS system and contact the Zoning and Building Safety Department at 309-558-3771 or gthorpe@rockislandcountyil.gov to review lot eligibility, foundation plans, setbacks, and applicable permits before purchasing their modular home.
Does Saline County, Illinois Allow Modular Homes?
Saline County does allow modular home construction; yet planning for modular home construction should first determine whether their property falls within Harrisburg, Eldorado, Carrier Mills, or another incorporated community, since local building and zoning requirements can vary.
The county’s official public resources do not provide a verified countywide residential setback schedule or comprehensive building permit procedure for unincorporated land.
Therefore, homeowners should confirm the governing jurisdiction before relying on minimum lot dimensions or building placement standards that may apply only within a particular municipality.
For rural properties, transportation access can also influence the feasibility of installing a modular home. The Saline County Highway Department is responsible for county roadway matters, while separate township or municipal authorities may control other roads. Land requiring a new driveway or culvert should be evaluated before heavy delivery vehicles are scheduled, particularly where narrow roads or drainage ditches complicate access.
Residents considering an unincorporated building site can contact Saline County Engineer Chad Masterson at 618-253-4027 or countyengineer@salinecountyhighway.com to discuss road access and transportation requirements, then consult the appropriate local permitting authority about residential development and septic approvals.
Does Sangamon County, Illinois Allow Modular Homes?
Yes, Sangamon County allows modular home construction and requires building permits for new single-family residences in its unincorporated areas and administers a county zoning ordinance that governs residential use, building placement, and lot dimensions.
The ordinance distinguishes agricultural property from residentially zoned land and establishes procedures for requesting zoning amendments, conditional permitted uses, and variances. For certain residential subdivisions, proposed lot divisions have required variances because the resulting lots contained less than one acre or exceeded the ordinance’s permitted lot-depth-to-width ratio of 2.5 to 1.
These examples illustrate why homeowners should verify whether a proposed homesite is legally buildable, particularly when separating a smaller parcel from agricultural land.
Sangamon County’s Building Safety Section currently identifies the 2018 International Residential Code, 2018 International Building Code, 2018 International Mechanical Code, 2018 International Fire Code, and 2017 National Electrical Code among its adopted construction standards, subject to local amendments and applicable state requirements. New residential construction may also involve separate electrical, plumbing, and mechanical permits, depending on the project.
Property owners should contact the Sangamon County Building and Zoning Department at 217-753-6760 or zoning@sangamonil.gov to confirm zoning classification, setbacks, required construction plans, and inspections before arranging modular home delivery.
Does Schuyler County, Illinois Allow Modular Homes?
Yes, Schuyler County allows modular homes, and those looking to have a modular home should establish whether their land lies within Rushville or another municipality before preparing a building site. A comprehensive countywide residential zoning ordinance with uniform setbacks and minimum lot dimensions could not be verified through the official records reviewed.
Schuyler County has a formal process for reviewing subdivision plats, making land division an important consideration for homeowners purchasing part of a larger rural property. The County Recorder’s published fee schedule identifies a $175 recording fee for plats, compared with $120 for most other recorded documents; these are recording fees, not necessarily the full cost of subdivision approval.
Residents developing rural property can contact the Schuyler County Clerk and Recorder at 217-322-4734 or clerk85@schuylercountyil.gov to review recorded restrictions and subdivision procedures.
Additional guidance on road access is available from the Schuyler County Highway Department at 217-322-6029, while the Health Department can be reached at 217-322-6775 for environmental health questions.
Does Scott County, Illinois Allow Modular Homes?
Yes, Scott County allows modular home construction, and homeowners should first establish whether their proposed property is located within Winchester, another incorporated community, or an unincorporated rural area.
A comprehensive countywide residential zoning ordinance establishing uniform setback distances and minimum lot dimensions could not be confirmed from the published county resources reviewed. Consequently, homeowners should verify the applicable building requirements before deciding where to place a permanent foundation or purchasing an undeveloped parcel.
Rural properties may require additional preparation for driveway access, private sewage treatment, and water service. Land near the Illinois River also deserves careful floodplain evaluation, since some properties may need additional development approvals or foundation-elevation measures.
Homeowners can begin by contacting Scott County government at the County Courthouse, 35 East Market Street in Winchester, to identify the local authority responsible for residential construction, floodplain administration, and roadway access. Obtaining confirmation of these requirements before ordering a modular home can prevent unexpected site preparation expenses.
Does Shelby County, Illinois Allow Modular Homes?
Yes, Shelby County allows modular home construction but requires an Improvement Location permit.
Permits are available for new homes in its unincorporated areas, regardless of whether the residence is traditionally built, modular, manufactured, or another construction type.
The county’s published permit fee for a new residence is $175, while residential additions and accessory buildings generally carry separate $125 permit fees. Shelby County also establishes a minimum dwelling size of 900 square feet, making this requirement especially important for homeowners considering smaller modular floor plans. A variance may be requested if a proposed dwelling does not satisfy the applicable standard.
The county’s building permit application provides specific dimensional requirements by district. In the R-1 Single-Family Residential District, the minimum lot width is 60 feet, side setbacks are 6 feet, and the rear setback is 20 feet.
Rural Residential properties require a minimum lot width of 300 feet, side setbacks of 20 feet, and a rear setback of 40 feet. Front setback requirements vary by road classification, with the published schedule identifying 40 feet for county roads, 30 feet for collector streets, and 25 feet for unincorporated village streets.
Homeowners should contact the Shelby County Zoning Office at 217-774-5797 or shelbyzoning@shelbycounty-il.gov to verify their property’s district, required setbacks, and permit application before construction begins.
Does St. Clair County, Illinois Allow Modular Homes?
Yes, St. Clair County specifically includes modular homes in its residential building permit procedures, making its published fee schedule particularly useful for homeowners. The county lists a $150 building permit fee for a modular or manufactured home and $300 for a modular home installed over a basement.
All building permits also carry a $30 application fee. Applicants must obtain a Certificate of Zoning Compliance, which has a separate $30 fee, and provide documentation including a sales contract or title for the modular home. If required, the county’s stormwater management and erosion control permit fee is calculated at 34% of the building permit fee.
The county maintains separate SR-1, SR-2, and SR-3 Single-Family Residential Districts, each with its own dimensional requirements and land-use standards. Setbacks and minimum lot sizes must be verified against the property’s zoning classification rather than assuming that the same restrictions apply throughout the county.
Building permits are generally valid for 12 months after issuance, with one extension of up to 180 days available at the code official’s discretion.
Homeowners can contact the St. Clair County Building and Zoning Department at 618-825-2528 or zoning@co.st-clair.il.us to confirm their district’s setbacks, obtain the zoning compliance certificate, and determine whether floodplain or stormwater approvals are necessary before beginning installation.
Does Stark County, Illinois Allow Modular Homes?
Yes, Stark County allows modular homes and requires building permits before residential construction begins, including installing modular homes. The county has administered zoning regulations since 1969 and maintains an updated zoning ordinance addressing allowable land uses, building locations, and development approvals.
Its current building permit fee schedule charges $0.10 per square foot of residential living area, subject to a $150 minimum. For example, a 1,600-square-foot modular home would have a calculated building permit fee of $160, while a 1,200-square-foot home would still be subject to the $150 minimum.
Beginning construction before obtaining the required permit increases the permit fee by 50%, making advance approval particularly important. Stark County also charges $250 for a variance, special-use permit, rezoning application, or zoning appeal, with additional publication costs potentially applicable. The county began accepting online building permit applications in January 2025 and provides separate resources for zoning, floodplain regulations, and rural addressing.
Homeowners can contact Zoning Officer Renee Johnson at 309-286-7172 or assessor@starkco.illinois.gov to confirm the property’s setbacks, zoning classification, permit fees, and any additional approvals needed for a modular home.
Does Stephenson County, Illinois Allow Modular Homes?
Yes. Stephenson County publishes a detailed zoning setback schedule that can help homeowners determine where a modular home may be placed. In the R-1 and R-2 Residential Districts, principal buildings generally require a 40-foot rear setback, while side setbacks range from 8 to 15 feet depending on the ordinance’s combined-yard provisions.
The R-3 district generally requires a 30-foot rear setback and side setbacks ranging from 7 to 15 feet. Rural estate districts are more restrictive, with E-1 requiring 30-foot side setbacks and a 100-foot rear setback, while E-2 requires 15-foot side setbacks and a 75-foot rear setback.
Roadway setbacks also vary significantly. In R-1 and R-2, buildings along primary roads must generally remain at least 50 feet from the property line or 80 feet from the roadway centerline, while collector roads require 40 feet from the property line or 65 feet from the centerline, subject to the county’s measurement rules. Stephenson County cautions that structures built within required setbacks may need a variance or relocation, and a variance is not guaranteed.
Before preparing a foundation or scheduling modular home delivery, homeowners should consult the Stephenson County Zoning Administrator at the zoning office, 295 West Lamm Road in Freeport, to confirm the applicable district, road classification, and required building permits.
Does Tazewell County, Illinois Allow Modular Homes?
Yes. Tazewell County allows modular homes and establishes specific residential zoning requirements that make lot size and roadway classification especially important for modular home planning.
In the RR Rural Residential District, new residential lots generally require at least two acres and a minimum width of 165 feet at the building setback line. Principal structures must be positioned at least 30 feet from side and rear property lines. Road setbacks include 135 feet from the centerline of an arterial highway, 100 feet from a major collector road, and 70 feet from a minor or private street, or 25 feet from the edge of the right-of-way when that produces a greater setback.
The R-1 Low Density Residential District allows different dimensions, with principal structures requiring 10-foot side setbacks and a 20-foot rear setback. Along arterial roads, the minimum setback is 90 feet from the centerline or 25 feet from the right-of-way edge, whichever is greater. Collector road setbacks are 60 feet from the centerline, and minor road setbacks are 50 feet, subject to the same 25-foot right-of-way minimum.
Tazewell County also specifies that setbacks are measured from the building’s overhang, which homeowners should account for when comparing modular home dimensions.
Before finalizing plans, residents can contact the Tazewell County Community Development Department at 309-477-2235 or zoning@tazewell-il.gov to confirm land eligibility, setbacks, and construction permit requirements
Does Union County, Illinois Allow Modular Homes?
Yes, Union County allows modular home construction however, homeowners should determine whether a proposed modular home site falls within the jurisdiction of Anna, Jonesboro, or an unincorporated rural area before beginning construction.
A comprehensive countywide residential zoning ordinance with verified lot sizes and setback requirements was not identified in the publicly accessible records reviewed. Accordingly, homeowners should confirm the rules governing their particular parcel rather than applying municipal setback standards to rural properties.
Much of Union County includes hilly terrain, making driveway grade, drainage, foundation preparation, and access for modular home delivery important considerations. On land without municipal sewer connections, homeowners should establish the suitability of a private sewage disposal system before determining the home’s final location.
Prospective buyers can begin with Union County government at 309 West Market Street in Jonesboro and the appropriate local health and permitting authorities to determine which residential approvals are required, whether the parcel is subject to floodplain restrictions, and what site preparation may be necessary.
Does Vermilion County, Illinois Allow Modular Homes?
Yes. Vermilion County allows modular homes; homeowners should distinguish between residential development within Danville or other municipalities and construction on unincorporated rural land. The county’s published government resources provide information about its County Board and specialized land-use ordinances, including solar development regulations, but a definitive countywide numerical residential setback schedule could not be verified.
Property owners should therefore identify the actual permitting jurisdiction and determine whether any zoning restrictions apply before selecting a modular home model or preparing a foundation.
For rural properties, road access, drainage, floodplain conditions, and private utilities may impose practical limitations even where a general county residential zoning standard is not readily available. Homeowners creating a new building site should also verify recorded easements and the ability to install a compliant private sewage system.
Residents can contact the Vermilion County Board Office at 217-554-6000, located at 201 North Vermilion Street in Danville, to identify the responsible local development authority and confirm whether residential construction permits, roadway approvals, or floodplain reviews are required.
Does Wabash County, Illinois Allow Modular Homes?
Yes, Wabash County allows modular home construction, yet homeowners considering modular homes should evaluate their property’s location in relation to Mount Carmel, other incorporated communities, and the Wabash River floodplain.
The county’s publicly available records do not establish a verified, uniform residential setback schedule for unincorporated development. Properties within municipal boundaries may be subject to separate zoning and building requirements, while rural parcels may have recorded subdivision restrictions, easements, or floodplain limitations that affect the proposed building location.
Flood hazard evaluation is especially relevant for properties near the Wabash River, where foundation elevations and site improvements may require additional consideration. Homeowners should also confirm suitable access for modular home transportation and sufficient space for private wastewater treatment when public sewer service is unavailable.
Before purchasing undeveloped property, prospective buyers can contact the Wabash County Clerk and Recorder at 618-262-4561, located at 401 Market Street in Mount Carmel, to review property records and identify the appropriate local offices for confirming building permits, floodplain requirements, and development restrictions.
Does Warren County, Illinois Allow Modular Homes?
Yes, Warren County allows modular home construction and administers zoning and construction regulations through its county Zoning Office, which reviews building permits, site plans, permitted uses, and development restrictions.
The county maintains a published zoning code addressing residential lot requirements, building setbacks, and permissible construction in agricultural and residential districts. Homeowners planning modular construction must determine the property’s zoning classification before establishing the building footprint, particularly when separating a residential lot from agricultural land or developing an existing rural parcel.
Minimum lot dimensions and setbacks vary by district and should be verified against the current county ordinance.
The zoning office also handles variance requests, zoning map changes, and other applications when a proposed development does not comply with existing requirements. In addition to obtaining the proper zoning permit, modular home buyers should confirm driveway access and private well or septic approvals where necessary.
Homeowners can visit the zoning office on the second floor of the Warren County Courthouse in Monmouth to confirm numerical setback requirements, applicable permit fees, and the approvals needed before construction.
Does Washington County, Illinois Allow Modular Homes?
Yes, Washington County allows modular home construction and requires building permits for all construction under its county jurisdiction, including residential homes and agricultural buildings. The county administers a revised zoning ordinance governing permissible land uses, lot divisions, setbacks, and construction approvals.
This makes advance zoning review especially important for homeowners planning to install a modular home on agricultural property or a newly created residential parcel. Even where land appears large enough for residential construction, the county may have minimum lot dimensions, subdivision restrictions, and roadway setbacks that affect the proposed building location.
Property owners should review the county’s parcel division requirements before purchasing a portion of a larger farm or creating a new homesite. Depending on the circumstances, projects that do not satisfy zoning standards may require a variance, special-use permit, or zoning amendment.
The county maintains separate applications for these procedures and requires a Natural Resource Inventory request with zoning map amendment applications.
Homeowners can consult Zoning Administrator Krystal Althoff at 618-327-4800, extension 345, or krystal.althoff@washingtonco.illinois.gov to confirm residential eligibility, required setbacks, parcel division rules, and building permits before ordering a modular home.
Does Wayne County, Illinois Allow Modular Homes?
Yes, Wayne County allows modular home construction, but they does not provide a readily identifiable countywide residential zoning schedule establishing minimum setbacks or lot dimensions in the official resources reviewed.
Homeowners should establish whether their proposed property falls within Fairfield, Wayne City, or another municipality before determining which construction requirements apply.
Site suitability is especially important for rural parcels without public water and sewer connections. Homeowners should determine where a private well and septic system can be located, verify that a driveway can accommodate modular delivery vehicles, and assess whether additional grading or foundation engineering will be needed.
Wayne County maintains land records through its County Clerk and Recorder, while the Supervisor of Assessments provides property identification and assessment information. Prospective buyers can contact County Clerk Elizabeth Woodrow at 618-842-5182 or waycoclerk@waynecountyil.gov and use the property’s legal description to identify recorded restrictions and the responsible local permitting authorities before construction begins.
Does White County, Illinois Allow Modular Homes?
Yes. White County allows modular home construction but provides an important distinction for homeowners planning modular construction because its County Clerk maintains an official County Non-Zoning Letter.
This document can help establish the absence of general county zoning in areas under county jurisdiction, although it does not eliminate municipal land-use requirements or other applicable development restrictions. Homeowners should obtain the appropriate documentation for their parcel before assuming that a proposed home may be placed anywhere on the property. Land within Carmi or another incorporated community may be governed by separate municipal regulations.
Properties near the Wabash and Little Wabash Rivers also warrant floodplain evaluation before foundation work begins. Rural homeowners should confirm road access, drainage requirements, and the feasibility of private water and sewage systems. These considerations are particularly important when a parcel has limited suitable ground for both the residence and its utility infrastructure.
Homeowners can request the County Non-Zoning Letter and review land records through the White County Clerk’s Office at 618-382-7211 or clerk@whitecounty-il.gov, located at 323 East Main Street in Carmi, before arranging their modular home’s installation.
Does Whiteside County, Illinois Allow Modular Homes?
Yes, Whiteside County establishes measurable requirements for modular home construction through its zoning ordinance. In the A-R Agricultural Residential District, properties generally require a minimum lot area of 40,000 square feet and a minimum width of 165 feet. Required setbacks include 10 feet from side property lines, 55 feet from the rear, and 80 feet from the roadway centerline.
The maximum building height is 30 feet. Properties in the R-1 One-Family Residence District may qualify with a smaller minimum lot area of 33,000 square feet and a width of 145 feet, subject to Health Department requirements. The R-1 district requires 10-foot side setbacks, a 45-foot rear setback, and an 80-foot roadway centerline setback.
Private septic conditions can affect whether a residential lot meets the minimum size requirement. In designated critical soil areas, the Health Department determines the necessary lot area, with the ordinance referencing a maximum requirement of 54,000 square feet under the applicable provision.
Whiteside County also recommends using a licensed land surveyor to establish property boundaries accurately rather than relying exclusively on GIS maps or existing markers.
Before purchasing a modular home, homeowners should contact the Whiteside County Building and Zoning Department at 815-772-5175 to confirm the property’s district, soil-related lot requirements, setbacks, and necessary construction permits.
Does Will County, Illinois Allow Modular Homes?
Yes, Will County allows modular home construction and has detailed zoning regulations that establish substantial differences between agricultural and residential properties. In the A-1 Agricultural District, the minimum lot area is generally 10 acres, with at least 300 feet of road frontage. Buildings require a 100-foot setback measured from the road centerline, 50-foot side setbacks, and a 50-foot rear setback.
The A-2 Agricultural District permits smaller lots of at least 2.5 acres, also requiring 300 feet of road frontage, with 20-foot side setbacks and a 50-foot rear setback. Both districts have a maximum building coverage of 20%, subject to applicable exceptions and farmstead provisions.
Residentially zoned parcels follow different dimensional requirements under Section 155-3.30 of the county code, including the E-1, E-2, and R-1 through R-6 districts. New modular homes require building permit review, and the county evaluates applications for compliance with both zoning and construction regulations. Site conditions, septic approvals, protected resources, and driveway access can impose additional restrictions.
Homeowners can discuss zoning eligibility and required setbacks with Will County Planning and Zoning at 815-740-8140 or zoning@willcountyillinois.com, then coordinate building plans and inspections with the Building Section at 815-727-8634 or building@willcountylanduse.com.
Does Williamson County, Illinois Allow Modular Homes?
Yes, Williamson County allows modular home construction, but requirements may vary by location. Before reviewing building requirements, determine whether your property falls within Marion, Herrin, Carterville, Johnston City, or another incorporated community.
Municipalities may establish their own residential construction regulations, meaning that the same modular home design could face different placement restrictions depending on the property’s location.
Rural properties may require private sewage treatment, water well installation, roadway improvements, or floodplain approvals before construction. These factors can affect the available foundation area and the cost of preparing an undeveloped site.
Homeowners planning to divide a larger property should also review recorded plats, legal access, and any applicable subdivision rules. Williamson County government can be contacted at 618-997-1301 or visited at 407 North Monroe Street in Marion, where property owners can identify the offices responsible for their particular site and obtain guidance on residential construction requirements before purchasing or delivering a modular home.
Does Winnebago County, Illinois Allow Modular Homes?
Yes, Winnebago County regulates modular home construction through its Unified Development Ordinance, which establishes different yard requirements for residential and rural zoning districts. In the R-1 and R-2 Residential Districts, principal buildings generally require a 30-foot front setback, 6-foot interior side setbacks, and a 30-foot rear setback.
The R-2 district also establishes a minimum separation of 12 feet between the exterior walls of principal structures. The R-3 and R-4 districts require 30-foot front setbacks, 10-foot interior side setbacks, and 25-foot rear setbacks. Properties in Rural Agricultural and Rural Residential classifications may be subject to substantially larger minimum setbacks.
Residential building heights also vary by district. R-1 and R-2 buildings are generally limited to 35 feet or 2.5 stories, while the R-3 district allows up to 40 feet or three stories. Winnebago County publishes adopted construction codes and administers building permit reviews and inspections for unincorporated property. Its published code resources identify the 2015 International Residential Code among locally adopted codes, although applicants should confirm any subsequent updates and applicable state requirements.
Homeowners can review their proposed home dimensions with Planning and Zoning Officer Troy Krup at 815-319-4350 and coordinate building permits with Building Official Steve Girard at 815-319-4359.
Does Woodford County, Illinois Allow Modular Homes?
Yes! Woodford County allows modular construction and requires zoning permits for new residential structures, and administers separate ordinances addressing land subdivisions, floodplains, erosion control, and stormwater management.
Under Chapter 154 of its zoning ordinance, residential development must comply with the lot dimensions, required yards, and allowable land uses established for the property’s zoning district.
The ordinance also establishes specific standards for certain planned residential developments, including minimum front and side setbacks of 15 feet where those provisions apply, with larger setbacks required along certain arterial roads and interstate highways. These planned-development standards should not be assumed to apply to ordinary residential parcels.
Woodford County requires additional site approvals before issuing zoning permits for new dwellings. According to its published zoning guidance, a dwelling permit cannot be processed until the necessary septic and soil erosion permits have been obtained.
Applicants must provide the proposed home’s dimensions, location, intended use, construction cost, and an elevation drawing or image showing its appearance. The county indicates that straightforward permit applications can sometimes be processed on the same day once the necessary information and approvals are available, although new-home projects may require additional review.
Homeowners should contact the Woodford County Zoning Department at 309-467-3023 or visit its office on the first floor of the Woodford County Courthouse in Eureka to verify their parcel’s dimensional requirements, site permits, and construction approval process.
Looking for a Modular Home Builder Serving Illinois?
Finding the right property is exciting, but figuring out building permits, foundation requirements, and site preparation can quickly become overwhelming. That’s where working with an experienced modular home builder can make a difference.
Zook Cabins offers a variety of modular homes for homeowners interested in everything from compact vacation cabins to spacious, multi-bedroom residences.
Our selection includes contemporary A-frame homes, traditional log cabins, and modern farmhouse designs. These homes are constructed in a controlled factory environment, helping streamline the building process while maintaining craftsmanship and quality.
When you choose Zook Cabins, you can expect support from start to finish. We also provide information to help coordinate your home’s foundation and site preparation with local contractors.
Explore our modular log cabin homes, browse available floor plans, or request a quote to begin planning your Illinois modular home.
Frequently Asked Questions about Modular Homes in Illinois:
What Kind of Foundation Does A Modular Home Need in Illinois?
Illinois modular homes must be installed on a permanent foundation.
The state’s Modular Housing Buyer Protection Act, 815 ILCS 362, specifically defines a modular home as factory-built housing intended for installation on a permanent foundation. Unlike a manufactured home built on a permanent chassis, a modular home becomes part of a permanent building system once it is installed.
The two primary foundation options are a crawlspace and a full basement foundation. Each of these options are explored more in our guide to modular home foundations for your consideration.
As a reminder, the majority of modular home builders provide engineered foundation information and assistance for their homes, but homeowners are responsible for arranging foundation construction before delivery.
Can Modular Homes Be Used As ADUs?
Yes, modular homes can potentially be used as accessory dwelling units (ADUs) in Illinois, although approval depends on the zoning regulations that apply to the property.
An ADU is a smaller, independent residential unit constructed on the same property as an existing primary residence. These units are commonly used for extended family members, aging parents, guests, or rental housing.
Before purchasing a modular ADU, homeowners should verify that their property’s zoning district permits a second dwelling. The most important constraint is floor size, but Zook Cabins offers lots of smaller modular homes that fit well within most local requirements.
Zook Cabins also offers multiple modular ADUs, including the A-Frame Dwelling, which is available in 564-square-foot and 846-square-foot configurations.
Does Illinois Require Land to Already Be Owned Before Buying a Modular Home?
No. Illinois does not impose a general requirement that prospective buyers already own land before shopping for or purchasing a modular home.
However, you will need an approved installation location before the home can be delivered and legally occupied. It’s also important to determine whether the property is inside municipal boundaries or in an unincorporated area. A property located within a city or village may be subject to different zoning rules than nearby rural land.
For buyers who haven’t purchased land, a practical approach is to identify several potential properties, speak with the appropriate planning office, and confirm whether the modular home you’re considering will meet the applicable requirements. This will reduce any unwelcomed zoning or pricing surprises.
What Utility Hookups Are Required for a Modular Home in Illinois?
A modular home intended for year-round residential use in Illinois needs approved connections for electricity, drinking water, wastewater disposal, and any utilities required by its heating and mechanical systems.
The exact requirements depend on whether your property can connect to municipal systems or whether you will need private systems installed.
You can check out the table below for more information or read our modular home delivery and site preparation guide. Information about modular home septic systems and cabin utilities may also be useful for your planning.
| Utility | What Illinois homeowners should know |
| Electricity | Most modular homes use a 100–200 amp electrical service, with 200 amps commonly preferred for larger homes with electric heating, appliances, or EV charging. Homes typically receive 120/240-volt single-phase power. |
| Water | Modular homes connect to municipal water or an approved private well. A ¾-inch to 1-inch water service line is a common residential planning size, although actual pipe sizing depends on fixture demand, pressure, and distance. Private well systems commonly use 30–50 PSI or 40–60 PSI pressure-switch settings, with well capacity and water quality verified before occupancy. |
| Wastewater | Under Illinois’ Private Sewage Disposal Code, conventional septic tanks must have a minimum liquid capacity of 750 gallons for 1–2 bedrooms, 1,000 gallons for 3 bedrooms, 1,250 gallons for 4 bedrooms, and 1,500 gallons for 5 bedrooms when no garbage grinder is used. Drainfield sizing depends on bedroom count and soil conditions, and a site evaluation is required for proper system design. |
| Heating and cooling | Modular homes commonly use 2–4-ton HVAC systems depending on their size, insulation, and layout, but equipment must be sized using appropriate heating and cooling load calculations rather than square footage alone. |
What Are Modular Homes and Are They Allowed in Illinois?
Yes, modular homes are legal in Illinois and can be used as permanent residences when they meet the applicable state building codes and local zoning regulations.
A modular home is constructed in sections inside a factory, then transported to a prepared building site where the sections are assembled and secured to a permanent foundation. Unlike a traditional house, where most construction takes place outdoors, much of the structural, electrical, plumbing, and interior work is completed before delivery.
Illinois has established specific requirements for these homes under the Illinois Modular Dwellings and Mobile Structures Code, found in 77 Illinois Administrative Code Part 880.
For homeowners interested in how these houses are constructed, our guide to modular home construction explains the process from factory assembly to final installation.
What Is the Difference Between a Modular Home and a HUD Manufactured Home?
Although modular homes and manufactured homes are both built in factories, Illinois treats them as different housing categories.
Modular homes are regulated under state building requirements, while manufactured homes are constructed according to the federal Manufactured Home Construction and Safety Standards, commonly called the HUD Code.
This difference affects construction requirements, foundations, inspections, and sometimes local zoning approval.
You can explore the differences further in our article on modular homes versus manufactured homes. Or keep reading to see a comparison table.
| Feature | Modular home | HUD manufactured home |
| Construction standards | Illinois modular dwelling requirements and applicable building codes | Federal HUD Code |
| Foundation | Permanent foundation | Permanent chassis with an approved installation and support system |
| State identification | Illinois modular approval seal or accepted reciprocal approval | Red HUD certification label on each transportable section |
| Local construction requirements | Additional applicable local building requirements may apply | Federal construction standards generally preempt conflicting local construction standards |
| Residential use | Can be approved as a permanent residence | Can be approved for residential use where zoning permits |
How Close Can a Modular Home Be to Property Lines?
As much as we’d love to provide clear numbers, at this time, there is no single setback rule for modular homes in Illinois.
Instead, setback distances typically depend on local zoning ordinances and the classification of the property.
A modular home generally must meet the same applicable dimensional restrictions as other permanent residential buildings in its zoning district.
For example, a residential zoning district might require a 30-foot front setback, 10-foot side setbacks, and a 25-foot rear setback. These are illustrative measurements, not statewide Illinois requirements, and the actual distances may be significantly different.
The safest approach is to obtain the property’s zoning designation and review the official dimensional requirements before purchasing a modular home.
Remember that setbacks are generally measured from the property line rather than from the edge of a road, fence, or neighboring building.
Do You Need A Permit For A Modular Home in Illinois?
Yes. Installing a modular home as a permanent residence in Illinois generally requires local building permits and applicable zoning approvals, even when the home has already been approved and inspected at the factory.
The permitting process involves both state-level modular home approval and local authorization for construction on the selected property.
Homeowners should be prepared to obtain some combination of the following approvals:
- Zoning approval confirming that the proposed dwelling is permitted on the property.
- A building permit covering the modular home installation, foundation, and applicable site construction.
- Septic or sewer approval
- Electrical and plumbing permits
- Final inspections and a certificate of occupancy or other required authorization before moving into the home.
The best way to confirm the permit process is to work closely with your local building department.
What Size Modular Homes Does Zook Cabins Have to Offer?
Zook Cabins offers modular homes in a wide range of sizes, making it possible to find a design for a small residential property, rural getaway, or full-time family residence.
Smaller models such as the A-Frame Retreat offer under 500 square feet of finished living space, while larger options like the Homestead can approach 3,000 finished square feet.
What Features are Included in a Modular Home from Zook Cabins?
One of the advantages of choosing a modular home from Zook Cabins is that a substantial portion of construction takes place before your home reaches Illinois.
Depending on the model and selected package, homes can arrive with completely finished interior living spaces, installed cabinetry, roofing, windows, doors, and preinstalled mechanical systems. All utility connections are in place and simply need to be connected.
Additionally, each model has modern design with features designed to stand out. For example, the Two Pines modular home features cathedral ceilings, luxury vinyl plank flooring, modern cabinetry, and large windows.
The exact extra features like covered porches, fireplaces, and extra rooms will depend on your specific model.
To better understand what happens before delivery, read our modular home construction guide.
Does Zook Cabins Have Modular Homes with Multiple Bedrooms and Bathrooms?
Yes! Zook Cabins offers modular homes with one, two, three, and four bedrooms, along with floor plans featuring multiple bathrooms.
Whether you want a compact house for two people or a larger residence for your growing family, there are several configurations to consider.
Can A Modular Home from Zook Cabins be Customized?
Your home should feel like your own. Many Zook Cabins modular homes offer personalization options that allow you to choose features like finishes, materials, and layouts suited to your preferences.
Some buyers prefer a traditional cabin appearance with natural wood finishes, while others want a contemporary home with expansive windows, modern cabinetry, and a clean exterior design.
Depending on the model, customization options may include exterior finishes, flooring materials, cabinetry, countertops, bathroom fixtures, and selected floor plan modifications.
Zook Cabins can help you explore the available options and determine which features fit your selected model.
Do Modular Homes Have Good Resale in Illinois?
Contrary to old belief, modular homes can actually have great resale value. This holds true and major financial institutions support modular homes.
As always, home resale value is determined by factors like land ownership, location, and home quality. There isn’t a distinction made simply because the house was built off-site, rather it comes down to these other factors.
We take a deeper dive into all things modular home resale in this comprehensive article. For more financing resources and questions, our team is happy to help.
Conclusion
Modular homes are becoming the future of housing and for good reason. Affordability, flexibility, and efficiency all lead to some great options for homeowners.
If you’re ready to take the next step, Zook Cabins would love to work with you. Call today or request a free quote so you can be one step closer to your dream home.