ADU Regulations in North Carolina: The Complete Guide

Thinking about adding an accessory dwelling unit (ADU) to your property in North Carolina? You’re not alone. As housing demands rise, more homeowners are exploring ADUs to create more flexible living space or generate rental income.

In this guide, we’ll break down everything you need to know about adding an ADU to your property in North Carolina, so that you can get clarity, make informed decisions, and move forward with your project without getting buried in legal jargon.

Are ADUs Allowed in North Carolina?

Yes, all ADUs are allowed and encouraged in North Carolina. Specific requirements regarding size, placement, and more vary depending on the city, county, or town where they reside. Keep reading to learn more about the ADU requirements in your area.

ADUs That Are Allowed in North Carolina

All ADUs are allowed and encouraged in North Carolina, and all of Zook Cabins’ ADU models meet North Carolina’s size requirements. Our smallest model is 597 square feet, and the largest is 848 square feet—comfortably within the known maximum allowed range. Browse the models below to find one that suits your property and complies with local regulations.

What Is Considered An ADU In North Carolina?

An Accessory Dwelling Unit (ADU) is defined as a self-contained (includes living, sleeping, and cooking areas) independent dwelling unit that is located on the same lot as a principal dwelling that meets all regulations. Accessory Dwelling Units may be detached, attached, or internal to the principal dwelling. An Accessory Dwelling Unit may be located above a garage.

Can Park Model Tiny Homes Be Used As ADUs In North Carolina?

Depending on where you live in North Carolina, park model tiny homes can be used as an ADU. According to the North Carolina General Assembly, park models are classified as recreational vehicles and are built in compliance with ANSI A119.5 standards. 

However, Park Model tiny homes are only allowed to be used as an ADU where they are already allowed to be used as a primary residence. So, please be sure to check with your local zoning and planning offices for the most up-to-date information, as regulations are changing frequently.

If you’re unsure what the difference between a park model tiny home and an ADU is, check out this clear-cut guide comparing the two structures.

Can Log Cabins Be Used As An ADU In North Carolina?

Yes. Log cabins could be used as ADUs so long as they are under the sizing maximums for ADUs in your area.

In general, most ADUs cannot be larger than a percentage of your primary dwelling on your property or cannot exceed a specific livable area square footage. With this in mind, many of our log cabins are built in sizes that comply with many local sizing requirements.

Can Modern Cabins Be Used As An ADU In North Carolina?

Yes, so long as they comply with the sizing requirements in your area. North Carolina enforces no minimum and typically has a set maximum of between 1,000 and 2,000 square feet, depending on where you reside. Below, we’ve compiled some of our modern cabins that comply with this requirement.

What is the Difference Between a Prefab ADU & a Modular ADU?

*This is our 1-bedroom A-frame ADU*

The difference between prefab and modular ADUs is in how they are constructed.

Prefab ADUs are built completely off-site and then delivered to your site fully assembled. Some shed companies may construct prefab ADUs. These are great if you want to capitalize on having a temporary dwelling quickly. However, these units will not appreciate like a typical house.

On the other hand, modular ADUs are built in sections off-site, but fully assembled on-site. Unlike prefab ADUs, these structures will appreciate like a house. In some cases, it may even be parcelled off and sold as a separate residence.

To learn more about the differences between the two, check out our guide on prefab and modular ADUs.

Size & Placement Requirements For ADUs in North Carolina

One key feature that sets an ADU apart from a typical single-family home is that it shares a lot with a primary residence and must meet specific size limits set by local zoning rules. We’ll explain these requirements in more detail below.

What is the Minimum Size for an ADU In North Carolina?

In North Carolina, there is no statewide minimum size requirement for Accessory Dwelling Units (ADUs). This is left up to the local cities, counties, and towns. Here, there may or may not be minimums. Some have minimums for an ADU, saying that they must be above a variable percentage of the lot size. For these specific regulations, please check our counties’ information and contact your local official for the most up-to-date information.

Can My ADU Be Bigger Than My House?

No, ADUs are not typically permitted to be larger than one’s home.

Do You Need A Permit For An ADU In North Carolina?

Yes, under the North Carolina state building code, a building permit is mandatory for any construction, reconstruction, alteration, or movement of structures. A zoning permit is required to confirm compliance with all code and zoning regulations. These zoning regulations vary by county, city, and town. It’s always best to reach out to your local planning and zoning department to find out exactly what is required.

Are there grants or incentives for ADUs in North Carolina?

Yes, there are grant and incentive programs in North Carolina for ADUs (Accessory Dwelling Units), particularly in cities like Durham and Raleigh. These programs aim to increase affordable housing options and provide financial assistance for homeowners building ADUs on their property.

Specific Examples:

Durham Affordable Accessory Dwelling Unit (ADU) Loan Pilot Program:

The City of Durham has a $1.75 million loan program to help homeowners finance ADU construction as part of its Forever Home Durham program. This short-term initiative that ended on May 16th, 2025, is one way cities are testing programs to increase affordable housing.  

Raleigh Fast Track Program:

Raleigh offers a faster permitting process for ADUs, making them more accessible for homeowners. 

USDA Rural Development Loans & Grants:

The USDA’s Rural Development program offers loans and grants for single-family housing repairs, which could potentially be used for ADU construction, especially in rural areas. 

NC Department of Commerce:

The NC Department of Commerce offers various grant programs, including those for building reuse and community housing, which could indirectly benefit ADU projects. 

Asheville ADU Support:

The City of Asheville has updated regulations to make ADUs more flexible and is working with the Federal Housing Administration to expand financing options. 

What Features are Included in an ADU from Zook Cabins?

While each of our ADU models offers many different features, they all have the following in common:

• Full kitchens with cabinets and appliances
• Bathrooms with showers or tubs
• Living areas with plenty of natural light
• Heating and cooling options
• Insulation that handles Maine’s cold winters
• Options for front porches, loft spaces, and extra bedrooms

Some features, like cabinets, countertops, and tile work, can be customized. Call a sales representative or fill out a free quote to discover all the possibilities.

Can an ADU Have Multiple Bedrooms and Bathrooms In North Carolina?

Yes, ADUs can have multiple bedrooms and bathrooms in North Carolina, provided that zoning requirements for accessibility and parking are also met. For example, in some counties and cities, a parking space must be provided for each dwelling unit or bedroom on a lot in addition to the one used for the primary unit. These requirements vary, so please connect with your local zoning department to ensure all local regulations and ordinances are being followed. 

If you’re interested in ADUs with multiple bedrooms and bathrooms, check out our Grove, Luna, and A-Frame ADUs, which all feature one to two bedrooms or bathrooms.

Are Zook Cabins ADUs Built to Code?

Yes. All of our models are designed to meet typical size and room requirements. Ranging from 571 to 900 square feet, each one falls well within the common ADU size limits in North Carolina.

Please note that our ADUs do not come with a foundation. Contact us to discuss which foundation option will work best for your project.

Are ADUs A Good Investment?

Absolutely! ADUs are often used as rental units and can be a great source of income. In some areas, financing options are available for building an ADU. Be sure to check your local regulations to see if there are any financial incentives that could make adding an ADU to your property an even better investment in a second source of income.

What Are the Requirements for ADUs in Each County in North Carolina?

In 2025, North Carolina enacted Senate Bill 495, mandating that local governments allow at least one ADU per single-family detached dwelling in residential zones.

While some counties’ official websites do not currently provide specific information regarding ADU regulations, the county must comply with the provisions of Senate Bill 495. This means that, in practice, ADUs should be permitted following state law.​

If you don’t see your county listed, you’ll find a second list that covers the remaining counties in North Carolina that do not have clearly defined ADU regulations, so it’s difficult to provide definitive answers for those areas.

County	Contact	Allows ADUs?	Min Sq. Feet	Max Sq. Feet
Alexander	Alexander County Planning & Development dept.	Yes	N/A	Maximum of 75% of the primary residence.
Brunswick	Brunswick County Planning Department	Yes	N/A	Unspecified
Buncombe	Buncombe County Planning Department	Yes	N/A	Unspecified
Burke	Burke County Planning and Zoning Office	Yes	N/A	Unspecified
Cabarrus	Cabarrus County Planning Department	Yes	N/A	Cannot exceed 50% of the primary residence
Caldwell	Caldwell County Building Permits and Inspections Caldwell County Planning Department	Yes	N/A	Unspecified
Camden	Camden County Planning and Building Department	Yes	N/A	Unspecified
Catawba	Catawba County Planning Department	Yes	N/A	Cannot exceed 650 square feet or 50% of the gross heated floor area of the primary residence.
Chowan	Chowan County Planning Office	Yes	N/A	*Cannot exceed 50% of the heated floor area of the primary residence.
Currituck	Currituck County Permits & InspectionsCurrituck County Citizen Self-Service	Yes	N/A	The floor area of an ADU cannot exceed 1,000 square feet.
Dare	Dare County Planning Department	Yes	N/A	Unspecified
Durham	Durham City-County Inspections Department. Durham City-County Planning Department.	Yes	N/A	The maximum size of any ADU shall be 1,000 square feet for a single story or 1,200 heated square feet total for a multi-story unit. However, the maximum heated floor area in the RR (Residential Rural) District is 50% of the primary residence.
Forsyth	Forsyth County/Winston-Salem Planning and Development Services Department.	Yes	N/A	Attached ADUs cannot be larger then 50% of the heated floor space of the primary building, with a maximum of  1,000 square feet.
Franklin	Franklin County Planning and Inspections Department	Yes	N/A	Maximum of 50% percent of the total square footage of the primary residence.
Guilford	Guilford County Planning & Development DepartmentADU Permit Guide	Yes	N/A	Unspecified
Harnett	Harnett County Development Services Department	Yes	N/A	Unclear
Henderson	Henderson County Code Enforcement and Zoning Services Department	Yes	N/A	Maximum of 75% of the total floor area of the primary residence.
Hertford	Hertford County Planning and Zoning Department	Yes	N/A	Unclear
Hoke	Hoke County Planning and Zoning Department	Yes	N/A	Unclear
Iredell	Iredell County Planning & Development Office	Yes	N/A	Unclear
Jackson	Jackson County Permitting and Code Enforcement	Yes	N/A	Unclear
Jones	Jones County Inspections Department	Yes	N/A	Unspecified
Lee	Lee County/City of Sanford Planning Department	Yes	N/A	Unspecified
Lenoir	Lenoir County Planning & Inspections Department	Yes	N/A	Maximum 75% of the heated floor area of the primary residence or 2,000 square feet.
Mitchell	Mitchell County Building and Fire Inspections	Yes	N/A	Unspecified
Moore	Moore County Planning and Inspections Department.	Yes	N/A	Unspecified
New Hanover	New Hanover Planning and Land Use Department	Yes	N/A	Maximum gross floor area of an ADU is 1,000 square feet
Onslow	Onslow County Planning & Development Department	Yes	N/A	Maximum is (60%) of the heated gross floor area of the primary dwelling. Or 900 square feet in R-15, and R-20 zoning districts. Or 1,200 square feet in the RA (Rural Agricultural) zoned districts. Which ever is less.
Orange	Orange County Planning and Inspections Department.	Yes	N/A	Maximum of 50% of theprimary dwelling or 1,500 square feet of gross floor area, whichever is greater.
Pasquotank	Pasquotank County Planning & Inspections Department	Yes	N/A	Maximum is 75% of the heated square feet of the primary building or 1,000 square feet, whichever is less.
Pender	Pender County Planning & Community Development Department.	Yes	N/A	For Detached ADUs: Maximum size is 33% of the heated floor area of the primary residence.
Perquimans	Perquimans County Planning and Zoning Department	Yes	N/A	Maximum size is 40% of the heated floor area of the primary residence, or 800 square feet, whichever is smaller.
Person	Person County Planning and Zoning Department	Yes	N/A	Maximum size is 50% of the total area of the primary residence
Pitt	Pitt County Planning & Development	Yes	N/A	A Detached ADU, other than a manufactured home, shall be at a maximum 50% of the gross floor area of the primary building. An Attached ADU shall be a maximum of 25 percent of the heated floor area of the primary building.
Polk	Polk County Planning and Zoining Department.	Yes	N/A	Unspecified
Randolph	Randolph County	Yes	N/A	Unclear
Richmond	Richmond County Planning & Zoning	Yes	N/A	An ADU maximum size can only be 40% of the living area of the primary dwelling unit,Or more than 1,200 square feet, and have more than 2 bedrooms.
Rockingham	Rockingham County Community Development Department	Yes	N/A	Maximum is 650 square feet or 50% of the gross heated floor area of the primary dwelling, whichever is greater.
Rowan	Rowan County Planning and Development Office	Yes	N/A	Unclear
Rutherford	Rutherford County Planning Department	Yes	N/A	Unclear
Sampson	Sampson County Planning & Zoning Department	Yes	N/A	Maximum of 60% of the sq footage of the primary structure or 1,200 sq feet, whichever is less.
Stanly	Stanly County Planning & Zoning Department	Yes	N/A	maximum of 800 square feet.The ADU shall not exceed 50% of the gross (living) floor area of the principal building
Stokes	Stokes County Planning and Inspections Department	Yes	N/A	Maximum gross floor area for an ADU shall be 1500 sq. ft
Surry	Surry County Planning Department	Yes	N/A	Unspecified
Transylvania	Transylvania County Planning and Community Development	Yes	N/A	Unspecified
Union	Union County Planning Department	Yes	N/A	An ADUs maximum size is 50% of the size of the primary dwelling unit
Wake	Wake County Planning, Development & InspectionsWake County Accessory Dwelling Units guide	Yes	N/A	Maximum 50% of the gross floor area of the primary dwelling unit
Warren	Warren County Planning, Zoning & Code Enforcement Department	Yes	N/A	25% maximum for efficiency units within the primary dwelling.50% maximum for attached/detached guest houses of the primary dwelling.
Washington	Washington County Planning and Inspections Department	Yes	N/A	Unclear
Wilson	Wilson County Planning Division Wilson County Development Services Department	Yes	N/A	Attached/Detached: maximum 50% of the gross habitable floor area of the primary structure. ADUs within principal dwellings maximum is(25%) of the gross floor area of the primary structure.
Yadkin	Yadkin County Central Permitting Department	Yes	N/A	Unclear
Yancey	Yancey County Building Inspections Yancey County County Manager	Yes	N/A	Unspecified

Does Alexander County Allow ADUs?

Yes, under code SR 3.6. Of the Land Development Code of the Planning & Development Department, one accessory dwelling unit is permitted per lot. 

• The accessory dwelling unit may be attached, within, or separate from the main dwelling.
• Manufactured homes are permitted as accessory dwellings where they are allowed to be used generally in each zoning district.
  • However, Mobile homes, park model homes, and recreational vehicles (RVs) are prohibited for use.
• Additional stipulations state that accessory dwelling may be combined with a garage, workshop, studio, or similar use.
• Units must be smaller than 75% of the main residence. 
• They may also be located in the established front, side, or rear yard.
• ADUs must meet the applicable building and lot type standards. 

For additional questions, please call or visit the Alexander County planning and development department.  

Does Brunswick County Allow ADUs?

Yes, but there are extra requirements that need to be met. Section 5.4.2 of the UDO stipulates several requirements for accessory dwelling units:​ The ADU must be situated within the primary dwelling (e.g., as an accessory apartment) or meet the locational and dimensional requirements for accessory structures.​ 

• Quantity: Only one ADU is permitted per lot.​ 
• The property should maintain a single-family appearance from the street.​ 
• An additional off-street parking space must be provided for the ADU.​
• However, using a travel trailer or recreational vehicle (RV) as an ADU are prohibited for use in residential districts or on properties designated for residential use. 

These regulations can change with the state’s latest ADU regulations. Please call, email, or visit your local planning and community enforcement office to ensure compliance with the latest information. 

Does Buncombe County Allow ADUs?

According to the Buncombe County Zoning Ordinance, ADUs are permitted in several residential zoning districts, including R-LD (Low-Density Residential), R-1, R-2, and R-3. This means that in these districts, property owners can construct ADUs without needing a special or conditional use permit, provided they comply with all applicable zoning and building standards.

The state’s latest ADU regulations could change these regulations. Please call or visit your local planning and development office to ensure compliance with the latest information.

Does Burke County Allow ADUs?

According to the Burke County Zoning Ordinance, ADUs are allowed in certain residential zoning districts, including R-1, R-2, and R-3. However, there are specific conditions and restrictions associated with their use.​

Please note: accessory dwellings are prohibited from being used as short-term rentals. This means they cannot be rented out for short stays (typically less than 30 days). Please call or visit your local planning and zoning office to ensure compliance with the latest information.

Does Cabarrus County Allow ADUs?

Yes, Cabarrus County permits one Accessory Dwelling unit (ADU) per parcel under specific zoning regulations and development standards. The requirements for ADUs are outlined in Chapter 7 of the Development Ordinance. 

• In residential districts (AO, CR, LDR, MDR, HDR), an accessory dwelling unit must not exceed 50% of the square footage of the primary structure. 
• In commercial or industrial buildings, an ADU must be integrated into the overall building design and must not exceed 25% of the base area of the structure.
• Setbacks and Height restrictions may also be in effect. 
• ADUs must follow the same building setbacks as the primary residence, which may be different per district. 
• ADUs must also not be taller than the principal residence and adequately hidden from public view. 
• Off-street parking must be provided for vehicles owned by ADU occupants. 
• Please note: Manufactured homes are prohibited for use as ADUs. 

For zoning questions and needed permit information, please call the planning department. 

Does Caldwell County Allow ADUs?

Yes, Caldwell County allows the construction of ADUs, provided they comply with zoning regulations and building codes. Additional things to note are that ADUs must be on the same parcel as the primary residence. Local regulations can change, so it’s always best practice to contact your county’s Building permits and inspections office and planning department to ensure compliance.

Does Camden County Allow ADUs?

Yes, Camden County allows the construction of Accessory Dwelling Units, provided they comply with the county’s zoning ordinances and building regulations. For the most up-to-date local regulations, please contact your local Planning and Building Department.

Does Catawba County Allow ADUs?

Yes, Catawba County permits Accessory Dwelling Units (ADUs) in all residential zoning districts and is subject to specific regulations outlined in the county’s Unified Development Ordinance (UDO). Please note: The same individual must own both the primary residence and the ADU, and must reside in one of the dwellings or on an adjacent parcel.

• For stick-built or modular principal dwellings, the Accessory dwelling unit must not exceed 650 square feet
  • Or 50% of the gross heated floor area of the primary residence, whichever is greater.
•  If the primary residence is a manufactured home, the ADU must be smaller in square footage.
• Additionally unless the ADU has access from a different road or street than the primary residence, it must share the same driveway. 
• And must adhere to the same setbacks and maximum height requirements for the zoning district in which it is located.
• When setting up utilities, compliance with all requirements of the county’s Division of Environmental Health for on-site sewage and well regulations is mandatory.

When Manufactured Homes are ADUs: 

• Class A or B manufactured homes may be used as ADUs if they are occupied by a lineal family member
  • or sibling of the property owner and are located within the Doublewide Manufactured Home-Overlay (DWMH-O) district.

These regulations are always subject to change, so for the most up-to-date zoning information, please call or visit the planning department.

Does Chowan County Allow ADUs?

Yes, Chowan County permits Accessory Dwelling Units (ADUs) in several residential zoning districts, subject to specific development standards outlined in Article 8, Section 8.03 of the county’s Unified Development Ordinance (UDO). 

• Any ADU must be owned by the same person who owns the primary residence. 
• It may be rented out, but it cannot be sold separately from the primary residence. 

Additional regulations are split into attached and detached accessory dwelling unit sections.

For Detached Accessory Dwelling Units

• For lots smaller than 40,000 square feet, the lot must be at least 1.5 times the minimum lot area required by the zoning district to be allowed an accessory dwelling unit.
  • However, lots 40,000 square feet or larger are exempt from this requirement. 
• Regarding setback and placement regulations, an ADU under 600 square feet must be at least 10 feet from the side and rear property lines.
  • ADUs 600 square feet or larger must comply with the primary residents’ setback requirements. The ADU must be located at least 20 feet behind the principal dwelling. And the total floor area of the ADU cannot exceed 50% of the heated floor area of the primary residence.

Please note: Type: A detached ADUs may be a manufactured home if located in a zoning district that already permits them as primary residences.

For Attached Accessory Dwelling Units

• The primary residence must not be altered to appear as multi-family housing from any public or private road.
  • This includes prohibitions on multiple entranceways or mailboxes. Access to the ADU should be through an existing side or rear door unless the North Carolina Building Code requires a new entrance. 
  • New doorways or stairways to upper floors are not permitted if they are attached to the front of the principal dwelling.

For the most up-to-date information, please call your planning office.

Does Currituck County Allow ADUs?

Yes,  Currituck County does allow ADUs, but they do have more specific requirements that must be adhered to:

• Accessory dwelling units may be located within a principal structure
  • (such as a downstairs apartment) or as a freestanding building or above a detached outbuilding.
• It is prohibited to use manufactured homes, travel trailers, campers, tractor trailers, or similar vehicles as accessory dwelling units.

Additional Standards

• Only one accessory dwelling unit per lot is permitted.
• The floor area of an accessory dwelling unit shall not exceed 1,000 square feet.
• An accessory dwelling unit shall be provided with at least one but no more than two off-street parking spaces (in addition to the required off-street parking serving the primary use).
• Accessory dwelling units cannot be sold apart from the primary residence structure.
• Accessory dwelling units may be used for home occupations, but no more than one home occupation shall be conducted on a single lot.

Please note that at least a zoning compliance permit is required before placing an ADU on your property. These are $25 for residential purposes. It is unclear if a building permit is needed, so please call or visit the Planning & Inspections office for more information.

Does Dare County Allow ADUs?

Yes, they do. However, Dare County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs). ​To obtain accurate and up-to-date information on ADU regulations in Dare County, please call or visit the county’s planning department.

Please note: Zoning regulations may be different within incorporated municipalities in Dare County, such as the Towns of Duck, Kitty Hawk, Kill Devil Hills, Nags Head, Manteo, and Southern Shores. If you live in these municipalities, please contact your local planning or community development department.

Does Durham County Allow ADUs?

Yes, however, accessory dwellings must follow the additional requirements:

• On a Residential lot, only one accessory dwelling shall be allowed.
  • Multiple accessory dwelling units may be allowed depending on zoning. 
  • Projects with more than 20 units shall be subject to Site Plan Review.
• ADUs can be located anywhere on the lot but must comply with the minimum yard requirements on the primary structure.
• The maximum size of each unit shall be 1,000 square feet for a single story
  • 1,200 heated square feet total for multi-story unit.
  • There are no maximum for collective square footage across multiple accessory dwelling units.
  • However, the maximum heated floor area in the RR (Residential Rural) District is 50% of the primary residence.
• If a primary residence is a single‐family residence, an accessory structure may be a duplex.
• The accessory dwelling can be located within the primary structure (attached) or separate (detached) from the primary structure.
• A nonconforming accessory structure can be renovated or reconstructed into an accessory dwelling.
• Please note: Using a travel trailer or recreational vehicle (RV) as an accessory dwelling shall be prohibited within the RR district, except when used for short-term rentals or temporary visits of two weeks or less.

The Durham City-County Planning and Inspections Department provides planning and inspection services for Durham, North Carolina. For any building permits and inspection needs, please call or visit the City-County Inspections Department. For additional zoning information and questions, please call, email, or visit the City-County Planning Department.

Does Forsyth County Allow ADUs?

Yes, they do. However, Forsyth County’s Planning & Inspections is combined with the city of Winston-Salem, which does have ADU directions for both the county and the city itself. This includes:

For Attached ADUs:

• The Primary residence building shall not be altered in any way to appear from a public street that it’s multiple-family housing.
  • Prohibited alterations include, but are not limited to: multiple entranceways; multiple mailboxes; or multiple nameplates.
• Access to any ADU shall be done by means of existing doors.
• No new stairways to upper floors are permitted on any side of a building that faces a public street.
• Electric and/or gas utilities shall be supplied to both units through a single meter.
• An attached ADU cannot be more than 50% of the heated floor space of the primary building, and cannot be greater than 1,000 square feet.
• Parking for the attached ADU must be served by the same driveway as the primary residence.

For Detached ADUs:

• Any detached ADU must comply with all the dimensional requirements applicable to an accessory structure, as found in Section 5.3.1E.
• Any detached ADU must comply with all building, plumbing, electrical, and other applicable codes, except for those for manufactured housing units.
• A class A or B manufactured home may be used as a detached accessory dwelling.
• Please note: A class C manufactured home may be used as a detached ADU where they are allowed to be used as a primary residence.

For any additional questions regarding ADU regulations for either Forsyth County or the city of Winston-Salem, please call, email, or visit the Planning and Development Services Department.

Does Franklin County Allow ADUs?

Yes, ADU’s are allowed in Franklin County. However here are some zoning regulations that must be followed.

• Residential lots developed with more than one dwelling unit shall not be permitted to develop accessory dwellings.
  • Only 1 ADU is permitted per lot.
• The accessory dwelling unit shall not be served by a separate driveway from that of the principal dwelling unit.
• The ADU shall not exceed 50 percent of the total square footage of the primary residence.
• Please note: No accessory dwelling unit shall be permitted on a lot with a two-family duplex, multi-family dwelling, or family care home.
• All ADUs must meet all setback requirements for accessory uses, buildings, and structures as outlined with a 20-foot separation from the primary residence.
• If the accessory dwelling unit is located on a lot where legal access is provided by means of an access easement there shall be a legally recognized maintenance agreement for said easement.
• Certification from the Environmental Health Department is required to ensure that any septic system can accommodate the ADU, if applicable.
• The ADU may be a manufactured home if it meets all other criteria and is permitted for use by the zoning district.

For questions regarding zoning or permit needs, please visit the permit portal, call, or visit the Planning and Inspections department. 

Does Guilford County Allow ADUs?

Yes, they do, and they offer a comprehensive process guide on the county’s website.

An ADU is intended to be an “accessory” to the primary residence, and must include a kitchen, living area, bedroom, and bathroom. All building specifications must meet the NC residential building code. Adding an attached porch or deck must also meet building standards in Appendix M.

Please note: All ADUs must receive Zoning Approval. If your property is within unincorporated Guilford County or within the Town limits, contact the appropriate Town’s Planning Department. For all other questions regarding permits, please call or visit the Guilford County Planning and Development Department. 

Does Harnett County Allow ADUs?

Yes, they do. However, Harnett County does not have clear publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note: Harnett County, in their ordinances, calls ADUs secondary residences. However, they note that one secondary residence is allowed when the secondary and primary residences meet all of the dimensional lot requirements of the applicable zoning district.

​Please call, inquire online, or visit the county’s Development Services Department to obtain accurate and up-to-date information on ADU regulations.

Does Henderson County Allow ADUs?

Yes, Henderson County allows ADUs, considering they follow all zoning regulations. Here are some of the requirements:

• Only 1 ADU is permitted on a single deeded lot along with the primary residence.
• An ADU can be attached, within, or separate(detached) from the principal residence.
• Manufactured homes can be used as ADUs where they are permitted for use as a primary residence in the zoning district.
  • Please note: Mobile homes, park model homes, and recreational vehicles are prohibited for use as an ADU.
• An ADU cannot be larger than 75% of the total floor area of the primary residence. 
• An ADU may be combined with a garage, workshop, studio or similar use Location. 
• A detached ADU may be located in the established front, side, or rear yard and must meet all standards for the applicable building and lot type.

For any additional questions regarding these or any zoning regulations, please call or visit the Code Enforcement and Zoning Services Department.

Does Hertford County Allow ADUs?

Yes, they do. However, Hertford County does not have clear publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

​However, the Unified Code references a secondary dwelling requirement with a minimum setback of 20 feet. To obtain the most accurate and up-to-date information on ADU regulations in Hertford County, please call or visit the county’s Planning and Zoning Department.

Does Hoke County Allow ADUs?

Yes, they allow ADUs, but they must follow all zoning and permitting regulations. Here are some of the zoning requirements:

• An ADU may be attached or detached from the primary residence.
• The primary use of the lot shall be for a single-family dwelling built to the standards of the NC Building Code or a Class A Manufactured Home.
• Only one ADU is permitted on parcels under five acres.
  • However, parcels five acres or larger are permitted a maximum of two accessory dwelling units.
• Accessory dwelling units may be served by separate driveways.
• A detached ADU shall be located in the established rear yard and meet the primary residence’s unit side and rear setback requirements for the zoning district in which it is located.

For any questions regarding these requirements and for the most up-to-date information, please call or visit the Planning and Zoning Department.

Does Iredell County Allow ADUs?

Yes, they do, as long as all zoning regulations and permits are followed. These are the most recent regulations from 2023. 

• ADUs are permitted for a single-family dwelling unit only.
  • It shall be clearly subordinate to the principal structure. 
• For detached dwelling units and those using separate septic and/or well systems.
  • The minimum lot size shall be two times the minimum lot requirement for the district.
  • Otherwise, the standards of the zoning district shall apply.
• The maximum heated floor is 650 square feet. 
• The ADU may be combined with a garage, workshop, etc.
• Only one ADU is allowed on a lot.
• The ADU must be owned by the same person who owns the primary residence.
• Must be served by the same driveway as that of the primary residence.
• Must be located in the rear or side yard and meet rear and side yard setback requirements of a primary building.
• Must meet the height requirements of the specific zoning district

For questions regarding zoning permits and for the most up-to-date information, please call or visit the Planning & Development Office.  

Does Jackson County Allow ADUs?

Yes, they do. However, Jackson County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

If you live in the towns of Sylvia, Dillsboro, or the village of Forest Hills, please check with your local planning departments as ordinances may differ. ​To obtain accurate and up-to-date information on ADU regulations in Jackson County, please call or email the county’s Department of Permitting and Code Enforcement.

Does Jones County Allow ADUs?

Yes, they do. However, Jones County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

If you live in the towns of Pollocksville, Maysville, and Trenton, please check with your local planning departments as ordinances may differ. ​To obtain accurate and up-to-date information on ADU regulations in Jones County, please call or visit the county’s Inspections Department.

Does Lee County Allow ADUs?

Yes, they do. However, Lee County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note:​ The city of Sanford has consolidated the planning and community development departments for the City of Sanford, Broadway, and Lee County. To obtain accurate and up-to-date information on ADU regulations in Lee County, please call or visit the city’s Planning Department.

Does Lenoir County Allow ADUs?

Yes, they are as long as all zoning requirements are met and followed. Here is a small list of the regulations:

• Only one ADU is permitted per lot.
• The accessory dwelling unit cannot exceed 75% of the heated floor area of the primary residence or a maximum of 2,000 square feet.
• Must meet all setback requirements for accessory uses, buildings, structures, and an additional twenty (20) foot separation from the principal dwelling.
  • The additional 20-foot separation does not apply to ADUs constructed on top of a garage.
• An ADU may be a manufactured home if it meets all the criteria outlined in this section and is allowed for use by the zoning district.
• No ADUs can be used on a lot with a two-family duplex, multi-family dwelling, or family care home.
• The ADU shall be accessed by a lockable external entrance.
• Certification from the Environmental Health Department is required to ensure that any septic system can accommodate the accessory dwelling unit, if applicable.

For any questions regarding these ordinances or for additional zoning related information, please call or visit the Planning & Inspections Department.

Does Mitchell County Allow ADUs?

Yes, they do. However, Mitchell County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note: If your property is within the boundaries of a town such as Spruce Pine or Bakersville, make sure to check with your town’s planning department. For questions and to obtain accurate and up-to-date information on ADU regulations in Mitchell County, please call, or visit the county’s Building & Fire Inspections Department.

Does Moore County Allow ADUs?

Yes they do, following that these regulations are followed to ensure compliance.

ADUs Located within a Single Family Dwelling:

• Only one ADU can be located within a Primary Dwelling per lot.
• Two ADU can be connected by a passageway or breezeway but shall be considered two separate buildings.

ADUs Located within a Non-Residential Building:

• No more than two ADUs may be located within the Primary non-residential building.
• Fire resistance separation may be required per the NC Building Code.

ADUs that are Manufactued homes:

• There can only be two manufactured homes per lot.
  • There shall be a minimum of 1.5 times the minimum lot size requirement for the applicable zoning district for an accessory manufactured home.
  • There shall be an additional 10 acres of land beyond the minimum lot size for the applicable zoning district allotted for the second accessory manufactured home, in addition to a dwelling. 
• Accessory dwellings shall meet the required principal building setbacks with a minimum separation of 30 feet between and dwellings. 
• An accessory dwelling may be located in the front yard provided it meets the required principal building setbacks.
  • Please note: A lot that existed prior to January 4, 1994, may be developed for single-family residential purposes without being subject to watershed regulations.

ADUs as Single-Family Dwelling

• An ADU may be combined with a detached garage, workshop, barn (barn apartments).
• There can only be two accessory dwellings per lot.
• An additional 10 acres of land must be allotted for the third ADU.
• ADUs shall meet the required principal building setbacks with a minimum separation of 30 feet between any dwellings.
• An ADU may be located in the front yard provided it meets the required principal building
• setbacks.
  • A lot that existed prior to January 4, 1994, may be developed for single-family residential purposes without being subject to watershed regulations.

For question regarding these regulations and for the most up-to-date zoning regulations for your area, please call, or visit the Planning and Inspections Department.

Does New Hanover County Allow ADUs?

Yes, New Hanover County does allow ADUs, provided they comply with these zoning standards:

• Only one accessory dwelling unit per lot shall be permitted.
• ADUs are only permitted on a lot with a single-family detached primary residence.
• One off-street parking space shall be required for the ADU.
• In all districts excluding RA, the detached ADU shall only be accessed using the driveway that serves the primary residence.
• If the property is served by a water/sewer utility provider:
  • Proof of adequate water and sewer capacity from the appropriate provider (CFPUA, etc.) shall be provided if accessory units are not included in subdivision approvals. 
• If the property is served by well or septic:
  • The unit shall comply with all the well and septic standards of New Hanover County Environmental Health.
• In the RMF (Residential Multiple-Family) and PD (Planned Development) districts, ADUs shall only be allowed when constructed in connection with any single-family detached dwelling allowed within the district.
• For conventional zoning districts the lot must meet minimum lot area requirements.
• In performance subdivisions, ADUs having up to one bedroom shall not be considered a dwelling unit for density requirements.
  • Otherwise new accessory units may not increase density beyond the maximum allowed in the applicable zoning district.
• The total gross floor area of an ADU shall not exceed 1,000 square feet.
• The side setbacks for the detached unit shall be no less than required for the principal structure and a minimum of five feet.
• Rear setbacks for the detached unit shall be a minimum of five feet.
• The ADU shall be located in the rear yard completely behind the plane of the front façade of the principal structure unless constructed over a detached garage.
• In both conventional and performance subdivision developments, the accessory dwelling unit shall be located a minimum of 10 feet from any other structure, including other accessory structures.
• Must comply with Article 9 of the UDO Floodplain Requirements.
• Property owners must provide verification that the proposed ADU complies with the allocation of impervious surfaces allowed by the subdivision’s state stormwater permit.
• A drainage plan subject to approval by New Hanover County Engineering shall be required for any additions or new structures associated with the ADU.
• Mobile homes, RVs, shipping containers, and manufactured homes shall not be permitted as ADUs.

For any questions regarding these regulations and for the most up-to-date information, please call or visit the Planning and Land Use Department. 

Does Onslow County Allow ADUs?

Yes, they do. However, these zoning regulations must be followed to ensure compliance:

• Only 1 ADU is permitted per lot that contains a single-family dwelling.
• The heated gross floor area of the accessory dwelling may not
  • Exceed sixty percent (60%) of the heated gross floor area of the primary dwelling 
  • Or exceed nine hundred (900) square feet, whichever is less in the R-15 and R-20 zoning districts, or 1,200 square feet in the RA (Rural Agricultural) zoning district.
• Detached accessory dwellings must be located in the side or rear yards.
• Detached accessory dwellings shall comply with all principal structure setbacks.

Please note: Unless otherwise explicitly permitted by another provision, no recreational vehicle or manufactured home may be utilized as an ADU.

For questions regarding zoning regulations and for the most up-to-date information, please call or visit the Planning & Development Department. 

Does Orange County Allow ADUs?

Orange County allows ADUs, provided they meet all the zoning regulations listed below to ensure compliance.

• ADUs are only allowed to be used as an accessory to a single-family residence.
• There can only be one ADU (detached or attached) on any lot.
• The gross square footage of an ADU shall be at most 50% of the primary residence or 1,500 square feet of gross floor area, whichever is greater.
• The residential lot must meet all dimensional requirements of the zoning district in which it is located.
• An ADU shall comply with the N.C. Residential Building Code and HUD standards including minimum light/ventilation and room sizes.
• An ADU shall be served by an approved water supply and sanitary facilities.
• An ADU must remain in the same ownership as the primary residence.

For questions regarding these regulations and for the most up-to-date information please call or visit the Planning and Inspections Department.  

Does Pasquotank County Allow ADUs?

Yes, Pasquotank County does allow ADUs as long as they comply with all zoning regulations listed below.

• An ADU is permitted on the same parcel as a single-family dwelling, but shall be clearly incidental and subordinate to the primary building.
  • This can include garage apartments and guesthouses.
• An ADU may be attached to a single-family dwelling or combined with a detached private residential garage/workshop.
• Only one accessory dwelling unit is allowed per lot.
  • The ADU must be located on the same lot as the primary building.
• An ADU maximum is 75% of the heated square feet of the primary building or 1,000 square feet, whichever is less.
• A detached accessory dwelling unit must be located in the side or rear yard of the primary building
  • It must separated by at least 20 feet from the principal building and all other structures on the subject property and adjoining lots.
• A detached accessory dwelling unit cannot be subdivided from the single-family dwelling
  • The accessory dwelling unit must be owned by the same person that owns the single-family dwelling.
• No accessory dwelling units are allowed on the same lot as two-family or multi-family dwelling units.
• ADUs must comply with all requirements of Albemarle Regional Health Services, Environmental Health Division, and the NC State Building Code.

For any questions regarding these zoning regulations and for the most up-to-date information please call or visit the Planning and Inspections Department. 

Does Pender County Allow ADUs?

Yes, Pender County allows ADUs as long as individuals comply with all zoning regulations.

• Detached accessory dwelling units must be clearly subordinate to the primary structure
• Maximum size is 33% of the heated floor area of the primary residence.
• Only one ADU is shall be located on the lot.
• The ADU must be located in the rear or side yard and meet rear and side yard setback requirements of a primary structure per the applicable zoning district requirements

For any questions regarding and the most up-to-date zoning regulations, please call or visit the  the Planning & Community Development Department.  

Does Perquimans County Allow ADUs?

Yes, Perquimans County does allow the use of ADUs provided individuals comply with all zoning regulations.

Below are some of the counties zoning regulations:

• A secondary dwelling unit or ADU may be established in conjunction with and clearly subordinate to a primary dwelling.
  • An ADU may be located within a primary structure, as a freestanding building, or above a detached structure on the same lot.
  • A Detached ADU must follow all requirements for the lot coverage and setbacks for it’s zoning district.

To ensure that an ADU is secondary to the primary residence and not a duplex, it is subject to the following restrictions:

• Only one ADU may be permitted on a single-family lot. 
• ADUs shall not be larger than 40 percent of the heated floor area of the primary residence or 800 square feet, whichever is smaller.
• An ADU shall not be subdivided or otherwise segregated in ownership from the primary residence.
• An ADU must meet NC Building Code requirements.
• One additional off-street parking space must be provided for the ADU
• Either the primary residence or the ADU shall be occupied by an owner of the property.

Please note: ADUs are not permitted on the same lot as duplexes or multi-family dwellings. Using manufactured homes, travel trailers, campers, or similar vehicles as an ADU is also prohibited.

For questions regarding these requirements and for the most up-to-date information, please call or visit the Planning and Zoning Department.

Does Person County Allow ADUs?

Yes, Person County does allow ADUs, as long as all zoning ordinances are complied with.
Here are some of the ADU regulations below:

• An ADU may be located on the same lot with an existing permitted primary dwelling.
• The ADUs shall be fully permitted
• Maximum size does not exceed 50% of the total area of the primary dwelling, and the building height is no greater than the height of the principal dwelling unit.
  

An ADU may include the following:

• One separate meter for each utility (water, sewer, electric, gas, etc.) from the principal dwelling unit.
• One kitchenette with a stove, oven, sink, refrigerator and microwave.
• The address for the ADU shall be the same as the principal dwelling unit for E-911 emergency response purposes.
• A separate walkway and/or canopy that meets prevailing Building Code wind-load standards.
• A driveway extension to accommodate the width of one additional vehicle
  • or ten feet wide, whichever is greater and located towards the side yard of the driveway. 
  • No separate driveway connections, driveways, or aprons shall be permitted from the principal dwelling unit.
    

Using a Camper/RV as an ADU:

• Use of one camper/recreational vehicle (RV) shall be permitted as an ADU on an improved lot that has an existing primary residential dwelling for a period of up to ninety consecutive calendar days, subject to the following:
  • A tract of land owned by a single property owner may not be subdivided into multiple lots for the purpose of evading this Ordinance.
  • The temporary accessory use of a camper/RV shall not become a principal dwelling second home, per the Federal Internal Revenue Service (IRS) definition.
  • The camper/RV shall not obtain a temporary power (t-pole) permit and shall not have a t-pole on a separate meter from the principal dwelling.
  • The occupied camper/RV is one of the unoccupied campers/RVs that are permitted to be stored on the lot.

For any questions about these ordinances and for the most up-to-date information, please call or visit the Planning and Zoning Department.

Does Pitt County Allow ADUs?

Yes, Pitt County allows ADUs, provided all code and zoning ordinances are followed. Below are some of the requirements and allotments for ADUs:

• Only one ADU is permitted on the same lot with a primary dwelling unit.
• No ADU is permitted on the same buildable lot with a two-family or multi-family dwelling or family care home.
  

For a Detached ADU:

• Detached accessory dwelling units with a gross floor area of less than 600 square feet shall be located at least 10 feet from the side and rear property lines. 
• Accessory dwelling units with a gross floor area of 600 square feet or greater shall meet the setback requirements of the primary building.
• Detached ADUs shall be located behind and at least 20 feet from the primary dwelling.
• A detached ADU may be a manufactured home in districts that permit manufactured homes.
• A detached ADU may be a dwelling unit that is part of an accessory garage or a freestanding dwelling unit that meets the NC Building Code.
• A detached ADU, other than a manufactured home, shall be at a maximum of 50% of the gross floor area of the primary building.
  

For an Attached ADU or an ADU within a Primary Single-Family Dwelling:

• The primary building shall not be altered in any way so as to appear from a public or private road to be multi-family housing. 
• Prohibited alterations include, but are not limited to:
  • Multiple entranceways, or multiple mailboxes. 
  • Access to the ADU shall be by means of an existing side or rear door, except where a new entrance is required by the NC Building Code. 
  • No new doorways or stairways to upper floors are permitted if they are attached to the side of a building facing a public or private road.
  • An attached ADU shall occupy no more than 25 percent of the heated floor area of the principal building. 
  • The sum of all accessory uses (including home occupations) in a principal building shall not exceed 25 percent of the total floor area.

For any questions regarding these zoning regulations and ordinances and for the most up-to-date information, please call, contact online, or visit the Planning & Development Department.

Does Polk County Allow ADUs?

Yes, Polk County allows ADUs. However, current ordinances are not very clear. Due to the clarity needed for specific requirements, please call or visit the Planning and Zoning Department.

Does Randolph County Allow ADUs?

Yes, they do. However, Randolph County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note: If you live in the cities of Archdale, Asheboro, Randleman, Trinity, or the Town of Ramseur, contact your local planning and zoning department to obtain accurate and up-to-date information on ADU regulations in your area.

If you reside in an unincorporated area in Randolph County, please call, email, or visit the county’s Planning & Zoning Department.

Does Richmond County Allow ADUs?

Yes, Richmond County does allow ADUs as long as they are compliant with all zoning ordinances.

Please note: At this time, Local Zoning Ordinances on the county website note that ADUs are only to be used by family members or by a professionally assisted living person, which requires medical documentation.

Here are more of the regulations below:

• Only one ADU is allowed on a lot that contains a single-family dwelling unit.
• Only family members and/or legal guardians of the principal homeowner (applicant), or professional assisted living persons may reside in the approve ADU.
• An ADU can only be up to 40% of the living area of the primary dwelling unit, or no more than 1,200 square feet if it has two bedrooms.
• The principal owner of the property must have resided in the primary residence for no less than 10 years.
  • The need for the ADU must be documented by a medical doctor.
• The lot on which the ADU is to be placed must be at least 1.5 times the minimum lot size required for the district.
  • Including the Watershed acreage requirement, if applicable, in which the ADU is to be located.
• All district setbacks shall be met.
• A separate water meter, electrical connection and on-site sewerage disposal units as approved by the Richmond County Health Department, Environmental Health Section, shall be required.
• The Conditional Use Permit, if approved by the Board of Adjustment, shall be valid for 2 years, at which time the permit will need to be recertified.

For Questions about these regulations and for the most up-to-date information, please call or visit the Planning and Zoning Department.

Does Rockingham County Allow ADUs?

Yes, Rockingham County allows ADUs as long as they comply with all local zoning standards. Here are a few of them below:

• The following are allowed to be used as an ADU/guesthouse:
  • A site-built structure or modular home meeting all applicable sections of the NC Residential Building Code
  • Or A modular home meeting all applicable sections of NC Residential Building Code
• The ADU must comply with all requirements of Environmental Health Services, for on-site wastewater disposal and well regulations or be served by public water and sewer utilities.
• A detached ADU shall be permitted as an accessory to any detached primary single-family dwelling unit.
  • The primary structure must be a site-built or modular residence. 
  • The accessory dwelling unit must be clearly subordinate to the primary structure.
• Only one ADU is permitted on a single lot in conjunction with the primary dwelling unit.
• The accessory dwelling unit and the primary dwelling must be owned by the same person.
  • The owner must reside in one of the dwellings.
• ADUs must adhere to the maximum permitted height and setback requirements of the zoning district.
• Unless the ADU is accessed from a different road or street than the principal structure, the ADU must share a driveway with the principal structure.
• The ADU must not exceed 650 square feet or 50% of the gross heated floor area of the primary dwelling, whichever is greater.
• The ADU may be combined with a garage, workshop, etc.

For questions regarding these zoning regulations and the most up-to-date information, please call, email, or visit the Community Development Department at the Governmental Center 

Does Rowan County Allow ADUs?

Yes, Rowan County does allow all ADUs. However, the county’s ordinances are unclear on many of the specifics. The county code does note the following:

Secondary dwelling units are permitted in all zones

• Detached secondary units are permitted provided the entire zone lot contains adequate area to meet the zone lot size requirements for each dwelling and all other requirements of this section are met. 
• Secondary dwelling units cannot be two or more manufactured homes on one lot.

For any questions and for the most up-to-date information regarding ADU requirements please call or visit the Planning and Development Office.

Does Rutherford County Allow ADUs?

Yes, they do. However, Rutherford County does not have clear publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note: If your property is within the boundaries of the towns of Bostic, Ellenboro, Forest City, Lake Lure, Ruth, Rutherfordton, Spindale, or the village of Chimney Rock, please check with your town’s planning department.

If you have questions or want to obtain accurate and up-to-date information on ADU regulations in Rutherford County, please call or visit the county’s Planning Department.

Does Sampson County Allow ADUs?

Yes, Sampson County allows ADUs as a special requirement in the RA, R, and MRD Zoning Districts., so long as they meet the following zoning requirements:

• There must be an occupied single-family dwelling or modular home on the property.
• An ADU must be secondary and subordinate to a Single-Family Dwelling or a Modular home.
• The square footage of an ADU shall be at a maximum of 60% of the square footage of the primary structure or 1,200 square feet, whichever is less.
• An ADU must be located in the side or rear yard.
• ADUs must comply with NC Building Code.
• ADUs must completely comply with the definition of “Apartment”.
• Park model tiny homes are not permitted as ADUs.

For any questions and for the most up-to-date information please call, email, or visit the Planning & Zoning Department.

Does Stanly County Allow ADUs?

Yes, Stanly County allows ADUs as long as they comply with all zoning regulations. Below are some of the required regulations.

General Requirement for Both Attached and Detached ADUs:

• Only one ADU is permitted on the same zone lot with a primary dwelling unit.
• The ADU shall have a maximum area of 800 square feet.
• The ADU shall not exceed 50% of the gross (living) floor area of the principal building
  • Excluding any garage area, carport, porches, decks, patios, crawl spaces, and other non-living areas of the principal building.
• The ADU shall be designed to maintain the architectural design, style, appearance, and character of the principal residence.
• The ADU and principal dwelling unit shall have the same address and use the same mailbox.
• No ADU shall be permitted on the same zone lot with a two-family or multi-family dwelling or family care home.
• ADUs shall not be subdivided or otherwise segregated in ownership from that of the primary residence.
• The ADU can only have a maximum of two (2) bedrooms.
• The ADU shall be subject to the provisions of the zoning district in which it is located. 
• The ADU shall have water, sanitary sewer, gas, and electrical utilities as part of the principal building.
• The ADU shall not be served by a driveway separate from that serving the primary residence
  • Unless the ADU is accessed from a right of way not used by the primary residence such as a rear alley or separate street access on a corner or through lot.
    

If you have any questions and for the most up-to-date information please call, email, or visit the Planning & Zoning Department.

Does Stokes County Allow ADUs?

Yes, Stokes County does allow ADUs as follows:

• Only 1 ADU and conforming accessory structures are permitted on a tract containing a single-family dwelling unit (the primary dwelling).
• ADUs shall not be considered a separate unit for the purpose of determining minimum lot size or maximum density.
• Home occupations allowed under the zoning district of the primary dwelling may be located within the Accessory dwelling.
  • The ADU shall not be used for the sole purpose of an occupation.
• The maximum gross floor area for the ADU shall be 1500 sq. ft. and must meet the minimum requirements of the North Carolina State Residential Building Code.
• The ADU may be located within an attached or detached garage or attached / detached from the principal dwelling. 
• ADUs attached to the primary dwelling shall be of like construction
  • connection of a manufactured structure to the principal dwelling shall not be allowed.
• A secondary drive may provide access to the Accessory dwelling.
• The use of travel trailers, campers, or similar units as an ADU is prohibited. 
• In the RA zoning district, manufactured (mobile) homes would be allowed as ADUs; maximum gross floor area standards would not be applicable.
• The use of class A and class B mobile homes as an Accessory dwelling are only allowed in the RA zoning district, on a minimum lot size of two acres. 
• Mobile homes as ADUs shall conform to all standards set forth in this ordinance and must conform to RA zoning setbacks.

For questions regarding additional zoning regulations and for the most up-to-date information, please call or visit the Planning and Inspections Department. 

Does Surry County Allow ADUs?

Yes, they do. However, Surry County’s website does not clearly provide information regarding the allowance of Accessory Dwelling Units (ADUs).

For questions and to obtain accurate and up-to-date information on ADU regulations in Surry County, please call, or visit the county’s Planning Department.

Does Transylvania County Allow ADUs?

Yes, they do. However, Transylvania County does not have clear publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note: There is no county-wide zoning in Transylvania County. If you live in the Town of Rosman or the City of Brevard, please get in touch with your local planning department.
​

To obtain accurate and up-to-date information on ADU regulations in Transylvania County, please call or visit the county’s Planning and Community Development.

Does Union County Allow ADUs?

Yes, Union County allows ADUs in all residential zoning districts and only on lots occupied by a single principal dwelling unit. 

Below are listed the General Standards for ADUs:

• ADUs are subject to all applicable regulations of the zoning district they are located in
• No more than one ADU is allowed per parcel. 
• An ADUs maximum size is 50% of the size of the primary dwelling unit. 

An ADU may be created only through the following methods:

• Converting an existing living area within a dwelling unit (e.g., attic or basement)
• Adding floor area to an existing dwelling unit;
• Constructing a detached ADU on a lot with an existing dwelling unit; ADUs must meet NC Building Code. 
• Converting space within detached accessory buildings, or
  • Constructing a new dwelling unit with an internal or detached ADU.

For questions and for the most up-to-date information, please call, email, or visit the Planning Department.

Does Wake County Allow ADUs?

Yes, Wake County allows ADUs, provided that they comply with all code and zoning ordinances.
Here are a few of the ordinances below:

• An ADU is a second dwelling unit that is subordinate to the principal dwelling that is either
  • Located within the principal dwelling, including an addition to the primary dwelling. 
  • Or is located in an accessory building on the same lot as the principal dwelling unit. 
• An ADU is a complete, independent living facility equipped with a kitchen and with provisions for sanitation and sleeping. 
• An ADU’s maximum square footage is 50 percent of the gross floor area of the primary dwelling unit.
• Only one ADU is permitted per lot.
• A manufactured home is only permitted as an ADU on lots with a minimum of ten acres
• An ADU shall not be served by a separate driveway from that of the primary dwelling.
  • The ADU shall have at least one off-street parking space in addition to that required for the principal dwelling.

For more information, Wake County has a thorough guide on ADUs with FAQ, resources, and where and how to easily apply on the county website.

If you have additional zoning questions, please call the Planning, Development, & Inspections Department.

Does Warren County Allow ADUs?

Yes, Warren County allows ADUs provided they comply with all zoning and code ordinances. These requirements are as follows:

• An ADU is a residential structure used or designed as a residence for one family.
  • Includes rooms forming a separate, independent housekeeping unit (for owner occupancy, rental, or lease on a weekly or longer basis).
  • Must be physically separated from other dwelling units and have its own kitchen, bathroom, and sleeping facilities.
• A maximum of one ADU is allowed per lot, if compliant with zoning.
• 25% size limit for efficiency units within the primary dwelling.
• 50% size limit for attached/detached guest houses of the primary dwelling.
• Park model tiny homes are not permitted as ADUs

For questions regarding these regulations and for the most up-to-date information, please call or visit the Planning, Zoning & Code Enforcement Department. 

Does Washington County Allow ADUs?

Yes, they do. However, Washington County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs). The most recent ordinances state that dwellings may be accessory uses in any residential district if:

• The use is located inside the principal dwelling
• The use is detached as a garage apartment
• The use is occasional sleeping accommodations ancillary to the primary dwelling as a guesthouse.

For any questions and to obtain the most accurate and up-to-date information on ADU regulations in Washington County, please call, email the director, or visit the county’s Planning and Inspections Department.

Does Wilson County Allow ADUs?

Wilson County allows ADUs if they comply with all zoning and code requirements.

Here are a few of the regulations below:

• Only one ADU per lot shall be permitted.
• ADUs shall be located within the principal dwelling
  • Or behind the principal dwelling as a freestanding building 
  • Or above a detached outbuilding or garage.
• Manufactured homes may be used as ADU if they are allowed in the base zoning district where the primary dwelling is located.
• An ADU shall not exceed (50%) of the gross habitable floor area of the primary structure.
  • ADUs located within primary dwellings shall not occupy more than 25% of the gross floor area of the principal structure.
• Alterations to primary dwelling units to accommodate ADUs shall not cause the principal structure to appear to be a multi-family structure from any public or private street or adjoining property.
• ADUs shall be served by at least one off-street parking space
  • (In addition to the required off-street parking serving the principal use) 
  • And shall be served by the same driveway as the principal dwelling.
• ADUs shall not be sold apart from the principal structure.
• ADUs shall not include home occupations.
• Park model tiny homes are not permitted as ADUs

For Questions regarding these regulations and for the most up-to-date information, please call, email, or visit the Planning Division of the Development Services Department.

Does Yadkin County Allow ADUs?

Yes, they do. However, Yadkin County does not have publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

To obtain accurate and up-to-date information on ADU regulations in Yadkin County, please call, email, or visit the county’s Central Permitting Department.

Does Yancey County Allow ADUs?

Yes, they do. However, Yancey County does not have clear publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs). To obtain accurate and up-to-date information on ADU regulations in Yancey County, contact the Building Inspections Department.

Counties With Unclear ADU Regulations In North Carolina

The following cities do not have clearly defined regulations regarding ADUs. Below, you’ll find the appropriate government contact to determine whether they are allowed.

Because legislation is always in development, local regulations may change as statewide requirements are enforced, so be sure to monitor the status of the any proposed local legislation.

Alamance County	Planning Department
Alleghany County	Planning Department
Anson County	Planning Department
Ashe County	Planning Department
Avery County	Planning Department
Beaufort County	Planning Department
Bertie County	Planning and Inspections Department
Bladen County	Planning and the Building & Inspections Department
Carteret County	Planning & Inspections Department
Caswell County	Planning Department Please note: Hyco Lake, Yanceyville, and Milton have different zoning areas. For Yanceyville, please call the town manager/clerk. For Milton, please call the town clerk
Cherokee County	Building Code Enforcement
Clay County	Building Department
Cleveland County	Planning & Zoning Department
Columbus County	Planning Department
Craven County	Planning & Inspections
Cumberland County	Planning & Inspections Department
Davidson County	Planning & Zoning Department
Davie County	Planning & Development Services Department Please note: Zoning regulations may differ within incorporated municipalities in Davie County, such as the Towns of Mocksville or Bermuda Run. If you live in these municipalities, please contact your local planning or community development department
Duplin County	Planning Department
Edgecombe County	Planning Inspections Department
Gaston County	Building and Development Services Department
Gates County	Planning and Development Department
Graham County	Building Inspections Department
Granville County	Planning & Zoning Department
Halifax County	Planning & Zoning Department
Haywood County	Development Services Department
Hyde County	Building Inspections Department
Johnston County	Planning Department
Lincoln County	Planning and Inspections Department
Macon County	Planning & Code Enforcement Department
Madison County	Development Services Department
Martin County	Building Inspections Department
McDowell County	Planning Department
Mecklenburg County	Code Enforcement Department
Montgomery County	Planning Department
Nash County	Planning & Inspections Department
Northampton County	Planning & Inspections Department
Pamlico County	Inspections Department
Robeson County	Community Development Department
Scotland County	Zoning Department
Swain County	Building Inspections Department
Tyrrell County	Building Inspections Department
Vance County	Planning and Inspections Department
Watauga County	Planning and Inspections Department
Wayne County	Planning Department
Wilkes County	Planning Department

What Cities In North Carolina Allow ADUs?

Several cities in North Carolina allow Accessory Dwelling Units (ADUs). These include Asheville, Charlotte, Durham, Raleigh, Greensboro, and Chapel Hill. Other cities like Carrboro, Winston-Salem, Wilmington, Fayetteville, and Rocky Mount also permit ADUs, although with specific zoning restrictions or recent changes to those restrictions. 

Cities like Asheville, Charlotte, Durham, Raleigh, Greensboro, and Chapel Hill have all implemented regulations that permit ADUs.

City	Contact	Allows ADUs?	Min Sq. Feet	Max Sq. Feet
Charlotte	Charlotte Planning, Design, and Development	Yes	N/A	Maximum of 50% of the principal structure, with a maximum cover of 30% of the established rear yard. Maximum ADU size cannot exceed 800 heated square feet.
Raleigh	Raleigh Planning and Development Department	Yes	N/A	800 sqft for ≤40,000 sqft lot; 1,000 sqft for >40,000 sqft lot; 600 sqft max for manufactured home
Greensboro	Greensboro Development Services Department	Yes	N/A	Heated floor area of the ADU may not exceed 50% of the floor area of the primary dwelling.
Durham	Durham Planning Department	Yes	N/A	Max 1,000 sqft on a single story; 1,200 sqft total
Winston-Salem	Winston-Salem Planning and Development Services	Yes	N/A	Attached – 50% of primary residence; Detached – 70%; neither >1,000 sqft
Fayetteville	Fayetteville Planning and Zoning Division; Development Services Department	Yes	N/A	Maximum ADU size is 800 sqft.
Cary	Cary Planning and Development Services Department	Yes	N/A	Max 33% of primary dwelling habitable area or 800 sqft, whichever is less; 300 sqft for temporary health care structure
Wilmington	Wilmington Zoning Division; Planning & Development Department	Yes	N/A	Max 50% of gross floor area of primary structure or 1,200 sqft, whichever is less
High Point	High Point Planning & Development Department	Yes	N/A	Max 30% of gross floor area of structure; detached unclear
Concord	Concord Planning Department	Yes	N/A	Max 50% of primary structure or 1,100 sqft, whichever is less
Asheville	Asheville Development Services	Yes	N/A	Detached: max 70% or 800 sqft; Attached: max 70% or 1,000 sqft, whichever is less
Greenville	Greenville Planning and Development Services Department	Yes	N/A	Unclear
Gastonia	Gastonia Planning Department	Yes	N/A	Max 50% of ground floor area or 800 sqft, whichever is less
Jacksonville	Jacksonville Planning and Permitting Office	Yes	N/A	Unclear
Apex	Apex Planning Department	Yes	N/A	Outside overlay: max 40%; Inside overlay: 50% or 1,000 sqft, whichever is less
Huntersville	Huntersville Planning Department	Yes	N/A	Max 650 sqft or 50% of primary dwelling’s first floor area, whichever is greater
Chapel Hill	Chapel Hill Planning Department	Yes	N/A	Accessory apartments: 75% of floor plan <1,300 sqft or 1,000 sqft if >1,300 sqft; Cottage: 1,200 sqft if lot qualifies
Burlington	Burlington Planning Department	Yes	N/A	Max 50% of finished floor area; tiny homes max 500 sqft or 50%, whichever is less
Kannapolis	Kannapolis Planning Department	Yes	N/A	Max 50% of floor area of primary or 1,100 sqft, whichever is less
Wake Forest	Wake Forest Planning Department	Yes	N/A	Unclear
Rocky Mount	Rocky Mount Development Services Department	Yes	N/A	Max 50% of gross floor area of primary dwelling
Mooresville	Mooresville Planning & Community Development Department	Yes	N/A	Max 1,500 sqft or 75% of primary dwelling unit, whichever is less
Wilson	Wilson Development Services	Yes	N/A	Max 50% of heated living area of primary dwelling
Holly Springs	Holly Springs Development Services Department	Yes	N/A	Max 50% of finished floor area or 1,000 sqft, whichever is less
Hickory	Hickory Planning and Development Department	Yes	N/A	Max 50% of gross floor area or 900 sqft, whichever is greater
Fuquay-Varina	Fuquay-Varina Planning Department	Yes	N/A	Max 50% of heated sqft or 10% of lot, whichever is less

Are ADUs Legal in Charlotte, NC?

Yes, they are, and the following regulations must be followed to ensure compliance. There are slight differences between attached and detached ADUs. Below are a few of these regulations.

• The ADU shall have a floor area no greater than 50% of the principal structure and, under no circumstances, cover more than 30% of the established rear yard.
  • Maximum ADU size cannot exceed 800 heated square feet.
• An ADU shall be no taller than the primary dwelling.
• The ADU shall be located in the rear yard and no closer than 15 feet to a rear property line or along any side property line within the required side yard dimension.
  • If the ADU is located within a garage structure and the parcel abuts an alley, the structure may be located up to 5 feet from the rear property line if the garage is accessed from the alley.
• Roof and exterior wall materials and finishes of the ADU shall be similar in composition and appearance to that of the primary dwelling on the lot. 
• However, this requirement does not apply to additions or exterior modifications to an existing accessory structure for the purpose of creating an ADU.

For any questions regarding these regulations and for the most up-to-date information, please call or visit the city’s Planning, Design & Development Department.

Are ADUs Legal in Raleigh, NC?

Yes, ADUs are legal in Raleigh, NC, and are allowed in various zoning districts as long as they comply with all unit regulations. Below are some of the regulations: 

• An ADU shall be located on the same lot as a principal dwelling and meet both of the following:
  • The gross floor area of the accessory dwelling shall be less than the gross floor area of the total principal dwelling
  • Shall be placed on a permanent foundation
• There shall be no more than one ADU on the same lot as a principal dwelling unless it is located in a Frequent Transit Area, as shown on the City’s Comprehensive Plan
  • This provision allows for up to two ADUs on the same lot as a principal dwelling.
    • However, only one ADU can be attached to the principal dwelling. 
    • In the case of a townhouse development, only one ADU is permitted per townhouse lot, whether within a Frequent Transit Area or not.
• It shall be accessed by a lockable external entrance.
• Ownership of an ADU shall not be transferred apart from its primary dwelling unit;
• It shall meet all relevant standards and requirements of the UDO
• Unless attached thereto by a common wall, an ADU must be separated by at least 6’ from any other building on the lot.
• All ADU entrances must be externally accessible by pedestrians from either the driveway, street, and/or alley from which the lot takes access.
• ADUs are not permitted on Flag Lots.
• Maximum size for ADUs are:
  • 800 square feet for a 40,000 square foot lot and below.
  • 1,000 square feet for any lot above 40,000 square feet.
• An ADU cannot be a manufactured home or a movable structure except as specified in Section D. 2.6.3.D.6

For more information, please check out the Raleigh ADU FAQs. For the most up-to-date Zoning information, please call or email the Planning Team. Or call or contact the city’s Planning and Development Department Service Center.

Are ADUs Legal in Greensboro, NC?

Yes, ADUs are legal in Greensboro, as long as they comply with all code and zoning ordinances.

Below are a few of the required ordinances:

• Unless otherwise expressly stated, all accessory dwelling units must meet the requirements that apply to accessory uses and structures in the subject zoning district.
• Primary dwelling units & ADUs may not be sold separately.
• Only one accessory dwelling unit is allowed per lot.
• The accessory dwelling may be located within (attached) the primary dwelling it must and shall meet the location and dimensional requirements of the primary structure.
• The heated floor area of the ADU may not exceed 50% of the floor area of the primary dwelling.
•  No additional off-street parking is required. 

For questions regarding these requirements and for the most up-to-date information, please call or visit the city’s Development Services Department. 

Are ADUs Legal in Durham, NC?

Yes, ADUs are legal in Durham if they adhere to the following standards:

• On a residential lot developed with one or two primary dwelling units.
  • Only one accessory dwelling shall be allowed.
• ADUs can be located anywhere on the lot and shall comply with the minimum yard requirements applicable to primary structures.
• The maximum size of each unit shall be 1,000 square feet on a single story and 1,200 heated square feet total. 
• No additional parking is required.
• If a primary dwelling is a single‐family residence,
  • An accessory structure may be a duplex, so long as the total heated square feet of the ADU does not exceed 1,200 square feet for both units combined.
• A nonconforming accessory structure can be renovated or reconstructed to an accessory dwelling.
• The heated floor area of the accessory dwelling shall not exceed 1,000 square feet on a single story and 1,200 square feet total, except in the RR District.
  • Where the livable floor area can be a maximum of 50% of the primary dwelling’s liveable floor area on lots of four acres or larger. 
  • However, in no instance shall the floor area of an accessory dwelling unit equal or exceed the floor area of the primary structure.
• Use of a travel trailer or recreational vehicle (RV) as an accessory dwelling shall be prohibited within a residential district or on property devoted to residential use.
• No parking is required for an accessory dwelling.

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the city’s Planning Department.  

Please note: ADUs are not permitted in Special Flood Hazard Areas or Future Conditions Flood Hazard Areas.

Are ADUs Legal in Winston-Salem, NC?

Yes, they are if they follow these guidelines:

General Requirements:

• Attached and detached ADUs require a zoning permit from the city zoning officer.
• Only one attached or detached ADU is allowed per lot.

Additionally, for attached ADUs:

• An accessory dwelling unit shall be under the main use of a single-family residential building.
•  It cannot be greater than fifty percent (50%) of the heated floor area of the primary building, and at maximum can be 1,000 square feet.
• No additional parking is required for an attached dwelling unit.
• The height of an attached ADU cannot be taller than the primary structure.

Additionally, for detached ADUs:

• An ADU must be under the principal use of a residential building, single-family, or manufactured home.
• A detached ADU created through new construction shall have a minimum setback of 5 feet from the side and rear property lines.
• A detached ADU created through converting a previous legal accessory structure must meet the North Carolina Building Code regarding setbacks.
• Detached ADUs cannot be in front of the primary structure.
• The maximum size of a detached accessory dwelling cannot exceed 70% of the total floor area of the primary structure and cannot be greater than 1,000 square feet.
  • Regardless of the floor area of the primary structure, a detached ADU of 576 square feet shall be allowed.
• The maximum height of a detached ADU cannot be more than 25 feet tall.
• No additional parking is required for a detached ADU.

Please Note:

• A detached ADU must be constructed on a permanent foundation. 
• The use of campers, recreational vehicles (RVs), or trailers as an ADU is prohibited.

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the town’s Planning & Development Services Department.

Are ADUs Legal in Fayetteville, NC?

Yes, ADUs are legal in Fayetteville, provided that they comply with all code and zoning requirements.
Below are listed some of the regulations:

• Only one ADU per lot is permitted,
  • The only type of accessory dwelling unit permitted in the BP, LI and HI districts is Caretaker’s Quarters.
• ADU shall be located:
  • Within the primary structure (e.g., a downstairs apartment) 
  • Behind the primary structure as a freestanding building
  • Or above a detached outbuilding.
• An ADU shall not exceed 800 square feet in size.
• At least one, but no more than two, off-street parking spaces shall be provided for an ADU
  • (in addition to the required off-street parking serving the principal use).
• Accessory dwelling units shall not be sold apart from the principal structure.
• Park model tiny homes are not permitted as ADUs

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the Planning and Zoning Division of the Development Services Department.

Are ADUs Legal in Cary, NC?

Yes, ADUs are legal in Cary as long as all codes and zoning regulations are followed. These regulations include:

• A permitted ADU shall comply with all applicable site and building design, access, and other standards
  • except that such structures shall only be required to meet the setback requirements for accessory structures.
  • Temporary health care structures shall comply with all setback requirements that apply to the primary structure.
• No ADU shall exceed 33% of the size of the habitable floor area of the primary dwelling unit, or eight hundred (800) square feet, whichever is less.
  • A temporary health care structure may have no more than 300 gross square feet. 
• An ADU shall contain private sanitary facilities with hot and cold running water and cooking and food storage facilities.
• Only one ADU is permitted per lot
• At least 1 off-street parking space shall be provided for each bedroom located in an ADU.
• Home occupations shall be prohibited within an ADU.

Utility Dwelling Units (ADUs within a primary unit dwelling) are allowed if:

• The utility dwelling unit is within
• Connected by a covered walkway 
• Situated within five feet of the principal dwelling located on its own lot;
• The combination of the utility dwelling unit and the primary structure on the lot continues to meet the minimum setback requirements for a single-unit dwelling;
• The utility dwelling unit shall be a maximum size of 33% of the gross livable floor area of the total dwelling
  • or more than eight hundred (800) square feet, whichever is smaller. 
• The separate bathroom facilities must include a toilet and bathing facilities.
• Any entrance to the utility dwelling unit from the outside shall not be on the front wall of the primary structure.
• Home occupations shall be prohibited within a utility dwelling unit
  • A minimum total of 4 off-street parking spaces shall be provided for the principal dwelling and the utility dwelling unit.
    • An exception to this requirement may be approved by the Planning Department if written verification is given by the property owner that the occupants of the utility dwelling unit, due to age or physical disability, will not have vehicles on-site. 
    • No more than two (2) vehicles owned by the occupants of the utility dwelling unit will be permitted and must be parked off-street.

For questions regarding these regulations and for the most up-to-date information, please call, email or visit the Planning and Development Services Department. Or check our their ADU FAQs page.

Are ADUs Legal in Wilmington, NC?

Yes, ADUs are legal in Wilmington as long as all codes and zoning regulations are complied with. Below are a few of the codes and regulations:

• Only one ADU should be permitted on any lot.
• The maximum dwelling unit size shall be 50% of the gross floor area of the primary structure or 1,200 square feet, whichever is less.
• Attached ADUs are not accessory structures and shall comply with specific setback standards for principal buildings within that zoning district.

For questions regarding these regulations and for the most up-to-date information, please call, email or visit the Zoning Division of the Planning & Development Department.

Are ADUs Legal in High Point, NC?

Yes, ADUs are legal in High Point as long as all code and zoning regulations are complied with. Below are some of the required regulations:

General Regulations:

• No more than 1 ADU shall be located on a lot with a single-family detached dwelling.
• An ADU shall have a maximum of 2 bedrooms.
• An ADU and the principal dwelling shall have the same street address and mailbox.
• An ADU can not be sold separately from the principal structure
• An ADU and the principal dwelling shall utilize the same driveway,
  • Unless the ADU is accessed from a right-of-way not used by the principal dwelling (e.g., a rear alley or separate street access on a corner or through lot).
• An ADU shall be served by water, sanitary sewer, gas, and electrical utilities as part of the principal dwelling.

Design Regulations:

• An ADU shall maintain the architectural design, style, appearance, and character of the principal dwelling by incorporating design elements such as similar materials, facade treatment, colors, window style, roof design, and roof pitch

Location Regulations:

• If an ADU is located within the principal structure, the ADU shall not exceed 30% of the gross floor area of the structure.
  • Entrance doors or exterior stairways to the ADU facing streets shall be prohibited; separate access to the ADU shall be by means of a side or rear door in the principal structure.
• If an ADU is located in an accessory structure, it shall meet the residential accessory structure requirements in Code Section 4.4.4.

For questions regarding these regulations and for the most up-to-date information, please call or visit the Planning & Development Department.

Are ADUs Legal in Concord, NC?

Yes, ADUs are legal in Concord as long as all code and zoning requirements are complied with. Below are some of those regulations.

• Only 1 ADU shall be permitted per lot.
• The ADU shall not exceed 50% of the square footage of the livable area of the primary structure or 1,100 square feet of gross floor area, whichever is less.
• An ADU shall be located at the rear of the principal building.
  • In the AG or RE zoning districts, the Accessory Dwelling unit may be sited to the side of the principal building only if the lot exceeds 10 acres in size.
• An ADU shall meet all setback requirements as established for principal uses within the zoning district within which it is located.
• The exterior of the ADU shall be compatible with the primary residence in terms of color, siding, roof pitch, window detailing, roofing materials, and foundation or skirting appearance.
• Manufactured homes shall not be pulled up to or attached to a primary residence and considered an Accessory Apartment or Accessory Dwelling Unit.
  • Manufactured homes, as principal or ADU, shall be permitted only in the MH Manufactured Home Overlay District.
• Adequate off-street parking shall be provided for any vehicles owned by occupants of the ADU or Accessory Apartment.
• Where there is no public sanitary sewer service to the ADU, the County Health Department must approve sanitary sewer services provided to the ADU prior to its construction.

For questions regarding these regulations and for the most up-to-date information, please call, contact online, or visit the Planning Department.

Are ADUs Legal in Asheville, NC?

Asheville permits one ADU per lot in residential zoning districts, provided there is an existing or planned single-family home. Properties located within local historic districts require additional approvals, including a Major Work Certificate of Appropriateness from the Historic Resources Commission. Below are some additional regulations:

The maximum size of the ADU shall be determined based on the following:

• A detached ADU:
  • Maximum is 70% of the gross floor area of the primary dwelling unit or 800 square feet, whichever is less.
  • The height of a detached ADU may not exceed 25 feet.
• An attached ADU:
  • Maximum is 70% of the gross floor area of the primary dwelling unit, or 1,000 square feet. Whichever is lesser.
  • The height of an attached ADU will be governed by the height requirements for the residential structure.

Parking:

• Parking for the primary dwelling unit must be maintained or replaced on-site.
  • Parking shall be provided at a rate of one parking space per ADU. 
  • If off-street parking is required for the primary residential unit.
    • This parking space(s) shall be located to the side or rear of the primary residential unit, outside of the front setback area.

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the Development Services Department.

Are ADUs Legal in Greenville, NC?

Yes, they are. However, Greenville does not have clear publicly available information on its website regarding the allowance of Accessory Dwelling Units (ADUs).

Please note: The city code mentions detached or attached dwelling units in the code, but only when referencing minimum lot requirements. ​To obtain accurate and up-to-date information on ADU regulations in Greenville, please call or visit the county’s Planning and Development Services Department.

Are ADUs Legal in Gastonia, NC?

Yes, ADUs are legal in Gastonia, provided all code and zoning requirements are complied with.

Below are some of the regulations:

• Private residential quarters shall be permitted as an accessory use to any single-family detached dwelling unit
• The same person shall own the accessory and principal dwelling units.
  • The owner of the principal dwelling unit shall live on-site.
  • A disabled person, family member, or occasional guest shall occupy the accessory dwelling unit. 
• The private residential quarter can not be a rental unit (except in a Traditional Neighborhood Development).
• The accessory dwelling unit may be attached to or be separate from the principal dwelling unit (except in a Traditional Neighborhood Development).
  • The accessory dwelling unit may be located in a separate accessory structure if the lot area is at least 150% of the required minimum lot size for the zoning district in question.
• If the accessory dwelling is in a detached structure:
  • It shall be served by the same driveway accessing the principal structure.
• The ground floor area of the accessory unit shall be no greater than 50% of the ground floor area of the principal dwelling unit, or 800 square feet, whichever is less.
• If the ADU is located in an accessory structure
  • Said ADU shall be located in the rear or side yard. No such structure shall be located closer than 15 feet from any side or rear lot line (except in a TND). 
  • The accessory structure housing the dwelling unit shall not exceed the height of the principal dwelling.
• No more than one private residential quarters per lot shall be allowed.
• Any lot containing a private residential quarters shall have at least two off-street parking spaces.
• Park model tiny homes are not permitted as ADUs

For additional zoning questions and for the most up-to-date information, please call, email or visit the Planning Department.  

Are ADUs Legal in Jacksonville, NC?

Yes, ADUs are legal in Jacksonville, North Carolina; however, ordinances for this area are unclear outside of the definition for an accessory dwelling unit (ADU) in the city’s code.

• The Definition of Accessory Dwelling Unit:
  • A secondary dwelling unit established in conjunction with and clearly subordinate to and incidental to a primary dwelling unit, whether part of the same structure as the principal dwelling unit, or as a detached structure on the same lot.
• Caretaker’s Quarters definition:
  • An ADU located on the premises of another principal use for the occupancy of a caretaker, security guard, or other person charged with oversight and/or protection of the principal use.

For any questions regarding these ordinances and for the most up-to-date information, please call, email, or visit the Planning and Permitting Office.

Are ADUs Legal in Apex, NC?

ADUs are legal in Apex if all code and zoning ordinances are met. These ordinances for ADUs, or accessory apartments as the city refers to them, are as follows:

• A maximum of 1 apartment may be permitted as an accessory use to a principal single-family dwelling unit.
• There is no limit to the size of the accessory apartment when attached to a Single-Family.

Detached Accessory Apartment:

• Outside of the Small Town Character Overlay District: accessory apartments shall be no larger than 40% of the heated square footage of the principal single-family dwelling.
• Inside the Small Town Character Overlay District: accessory apartments shall be no larger than 50% of the heated square footage of the principal single-family dwelling or 1,000 heated square feet in size, whichever is smaller.
• The accessory apartment shall be constructed of materials substantially equivalent to the principal dwelling unit.
• The accessory apartment shall be consistent with the design of the principal structure.
• If attached, the accessory apartment shall comply with the minimum yard setbacks applicable to the district in which it is located. 
• If detached, the accessory apartment shall meet the requirements of UDO Sec. 5.2.7.
• An accessory apartment in the residential districts shall remain accessory to and under the same ownership as the principal single family dwelling unit. 
• Accessory units in the B1, B2, MEC-CZ, PUD-CZ, SD-CZ, MORR, and TND-CZ may be under separate ownership.

For any questions regarding these ordinances and for the most up-to-date information please call, email, or visit the Planning Department.

Are ADUs Legal in Huntersville, NC?

Yes, ADUs are legal in Huntersville, provided all codes and zoning ordinances are complied with.

• Only one ADU is permitted per lot.
• The ADU shall be owned by the same person as the principal dwelling.
• The ADU shall not be served by a driveway separate from that serving the primary dwelling
  • Unless the ADU is accessed from a rear alley, and the principal dwelling is accessed from a street.
• A detached accessory dwelling shall be housed in a building not exceeding 650 square feet of first-floor area or 50% of the first-floor area of the principal dwelling, whichever is greater.
• A detached ADU shall be located in the established rear yard and meet the setbacks of the zoning district in which it is located.
• An ADU must be registered with the Planning Director at the time a certificate of occupancy is obtained.

For Questions regarding these regulations and for the most up-to-date information, please call or visit the Planning Department.

Are ADUs Legal in Chapel Hill, NC?

Yes, ADUs are Legal in Chapel Hill, provided all code and zoning regulations are complied with.

Please note: Chapel Hill spits ordinances for ADUs into two options, one for Accessory Apartments and the other for larger ADU clits there ordinances for ADUs into two options naming one Accessory Apartments and the other and larger ADUs Cottages.

Here are some of the regulations for each ADU type:

Accessory Apartment:

• Maximum Floor Area
  • Maximum of 75% of the floor area of the primary house when the primary house is less than or equal to 1,300 square feet
  • Maximum of 1,000 square feet when the primary structure is greater than 1,300 square feet
• Maximum of 29 feet or the height of the primary structure, whichever is less
• Only 1 accessory apartment per single-family house
• No more than 4 unrelated people in the single-family house and accessory apartment
• 1 parking space per accessory apartment bedroom is required.

Cottage ADU:

• A second, detached single-family house of no more than 1,200 square feet may be constructed on the same lot as the primary single-family house when the lot size exceeds the minimum lot size by 2,700 square feet 
• Maximum size
  • Maximum Footprint 1,000 square feet
  • Maximum Floor Area of 1,200 square feet
• Maximum height of 29 feet 
• No more than one cottage per single-family house
• No more than four unrelated people in the cottage
• 1 parking space per cottage bedroom is required.

For questions on these ordinances and for the most up-to-date information, please call, email, or visit the Town’s Planning Department.

Are ADUs Legal in Burlington, NC?

Yes, ADUs are legal in Burlington if they comply with all ordinances and zoning regulations.

• Only one ADU shall be located on a lot with a single-family detached dwelling.
• An ADU shall not exceed 50% of the total amount of finished floor area in the primary structure.
• A tiny home structure may be utilized as an ADU provided it does not exceed 500 square feet in floor area or 50% of the finished floor area of the principal structure, whichever is less.
  • Park model tiny homes cannot be used as ADUs
• An ADU shall not exceed one story but can be located on a second or third story of an existing structure.
• The street address of the ADU shall differ from the principal dwelling and shall be assigned by the GIS Administrator or a designee at the time of building permit approval.
• An ADU shall not be subdivided or otherwise separated in ownership from the principal dwelling unit.
• An ADU and the principal dwelling shall utilize the same driveway,
  • unless the ADU is accessed from a right-of-way not used by the principal dwelling (e.g., a rear alley or separate street access on a corner or through lot).
• An ADU may be served by separate or shared water, sanitary sewer, gas, and electrical utilities.

For any questions regarding these regulations and for the most up-to-date information, please call or visit the Town’s Planning Department.  

Are ADUs Legal in Kannapolis, NC?

Yes, ADUs are legal in Kannapolis as long as they comply with all code and zoning requirements.

• Only one ADU is allowed per lot.
• An ADU shall comply with all dimensional and design requirements that apply to a principal structure in the zoning district where it is located.
• An ADU shall only be allowed on a lot on which a single-family detached dwelling is the primary dwelling and where it’s permitted in the zoning district where it is located.
• Either the principal dwelling or the ADU shall be the primary residence of the landowner.
• An ADU shall be located within or to the rear of the principal building,
  • except that in the AG Or R1 zoning districts on lots greater than ten acres, an ADU may also be sited to the side of the principal building.
• An ADU shall not have a floor area that exceeds 50 percent of the floor area of the primary structure or 1,100 square feet, whichever is less.
• If located in a structure detached from the principal structure,
  • The exterior of the ADU shall be compatible with the principal structure in terms of color, siding, roof pitch, window detailing, roofing materials, and foundation or skirting appearance.
• Manufactured homes shall be permitted only in the MHO Manufactured Home Overlay District.
• Adequate parking shall be provided to serve the residents of the ADU

For any questions regarding these regulations and for the most up-to-date information, please call or visit the city’s Planning Department. 

Are ADUs Legal in Wake Forest, NC?

Yes, ADUs are legal in Wake Forest as long as they meet the following requirements:

• Only one ADU is permitted per lot.
• A detached ADU shall be located to the side or rear of the principal building. 
• ADUs with a footprint greater than 600 square feet shall provide an Alley Buffer in accordance with Section 7.5
  • If adjacent to the GR, NCR, MUR, or TSR Districts, and any parallel conditional district to those districts.
• If located within the principal dwelling, the ADU shall have a private outside entrance located on or facing the interior side or rear of the principal dwelling.
• The ADU must contain complete kitchen facilities, including a stove or cook top, and a full bath, including a lavatory, water closet, and tub or shower (or combination).
• No signs visible from the street or public sidewalk are permitted.

For any questions regarding these regulations and for the most up-to-date information please call or visit the city’s Planning Department.

Are ADUs Legal in Rocky Mount, NC?

Yes, ADUs are legal in Rocky Mount, provided all codes and zoning regulations are complied with. Below are some of the regulations:

• The accessory dwelling shall be self-contained. 
• The ADU is maintained in the same ownership and is located on the same lot as the main dwelling unit.
• Only one additional unit will be permitted on a single-family lot.
• The ADUs maximum size is 50% of the gross floor area of the primary dwelling.
• The ADU shall comply with the regulations for accessory structures.
• Park model tiny homes are not permitted as ADUs

For questions regarding these regulations, feel free to check out the cities FAQs on ADUs. For the most up-to-date information, please call, email or visit the city’s Development Services Department. 

Are ADUs Legal in Mooresville, NC?

Yes, ADUs are legal in Mooresville, provided that all codes and zoning ordinances are complied met. The town defines ADUs as a residential dwelling unit that is located on the same lot as,

Below are additional regulations regarding ADUs in Mooresville:

• Only one ADU is allowed on a lot.
• ADUs shall meet the primary building setbacks.
• An ADU that is within or attached to the principal structure
  • Shall share an operative interconnecting door with the primary structure.
• An ADU within a separate structure that is detached from the primary structure
  • Shall be located at least ten feet from and in the same base zoning district as the principal structure. 
  • Be consistent in design to the principal structure
• The maximum gross floor area of an ADU is 1,500 square feet or 75% of the primary dwelling unit on the property, whichever is less.
• At least one off-street parking space shall be provided in addition to the parking spaces required for the principal dwelling. 
• Vehicular access to this off-street parking space shall be from the same driveway as the primary dwelling.
  • Unless the parking space is accessed from a right-of-way not used by the principal use (e.g., a rear alley or separate street access on a corner or through lot).
• An ADU shall have the same mailing address and mailbox as the primary dwelling.
• An ADU shall use the same water, sanitary sewer, gas, and electric utilities as the primary dwelling.
• ADUs shall not count toward the maximum density standards.

For questions regarding these regulations and for the most up-to-date information, please call or visit the towns Planning & Community Development Department.

Are ADUs Legal in Wilson, NC?

ADUs are legal in Wilson, provided they follow all code and zoning regulations. These include:

• Only 1 accessory dwelling unit is permitted per lot.
  • In R/A (Rural Agriculture) Districts, if the lot exceeds 2 acres, 2 ADUs may be permitted
• A detached ADU shall be located at the rear of the principal building.
  • If the lot exceeds 2 acres, the ADU may be located to the side of the principal building.
• The ADU shall meet all applicable design standards for the zoning district in which it is located.
• The maximum size shall be 50% of the heated living area of the principal dwelling.
• The exterior of the ADU shall be similar to the primary residence in material selection, color and roof alignment and pitch.
• Park model tiny homes can not be used as an ADU
• If located within the principal dwelling, the ADU may have a private outside entrance that is located along the side or rear of the principal dwelling.
• An ADU must contain complete kitchen facilities, including a stove or cooktop, and a full bath, including a lavatory, water closet, and tub or shower (or combination).
  • The unit must meet the habitability requirements of the City of Wilson Minimum Housing Code and the State of North Carolina Building Code.
• One off-street parking space, (which meets the Vehicle Parking Standards) shall be provided in addition to those required for the primary dwelling.

For questions regarding these regulations and for the most up-to-date information, please call or visit the towns Development Services Department.

Are ADUs Legal in Holly Springs, NC?

Yes, ADUs are legal in Holly Springs, provided they comply with all code and zoning regulations. Below are some of the regulations:

• An ADU shall contain no more than two bedrooms
• The maximum size of an ADU shall be 50% of the finished floor area of the primary dwelling located on the Lot or 1,000 square feet, whichever is less.
• An ADU shall be located to the side or rear of the primary dwelling unit on the lot and comply with setback requirements for accessory structures in your zoning district
• The design must be consistent with the principal structure
• ADUs may connect to the water, sewer, and electrical lines of the primary dwelling on the lot.
• 1 Off-Street Vehicle Parking Space is required for each ADU where On-Street Parking is not approved by the agency having jurisdiction.

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the town’s Development Services Department.

Are ADUs Legal in Hickory, NC?

Yes, ADUs are allowed in Hickory, provided all codes and zoning regulations are complied with. Below are some of the requirements:

• An ADU shall have a separate entryway.
• The maximum size of the ADU will be 50% of the gross floor area of the principal dwelling unit or 900 square feet, whichever is greater.
• One ADU is permitted per lot.
• Detached ADUs may be constructed in side and rear yards, not between the primary dwelling unit and any adjacent street.
• Accessory dwelling units shall be built to comply with the NC Residential Building Code.

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the town’s Planning and Development Department.

Are ADUs Legal in Fuquay-Varina, NC?

ADUs are legal in Fuquay-Varina if they meet the following requirements:

• A maximum of one ADU shall be permitted as an accessory use to a principal single-family dwelling unit on a single zoning lot.
  • Detached ADU.s shall count as an accessory structure for purposes of counting the maximum number of accessory structures allowable per zoning lot
• An ADU can be no larger than 50% of the heated square footage of the primary structure on the property, or 10% of the zoning lot, whichever is less.
• An ADU’s primary point of ingress and egress shall be an external access, separate from the primary residence.
  • This requirement shall not prohibit the internal connection of the ADU and primary residence.
• The ADU shall be constructed of the same materials and substantially equivalent to the principal single-family dwelling unit and compatible in character.
  • Where the ADU cannot be seen from the right-of-way,
    • it shall not be required to be constructed of the same materials as the primary structure.
• The ADU shall comply with the applicable setback requirements for the zoning district in which it is located,
  • in accordance with Article G Lot & Structure Provisions of the Land Development Ordinance.
• A detached ADU shall have an address assignment separate from the primary residence.
  • In accordance with Article Q Procedures & Administration and the North Carolina State Building Code. 
  • An attached ADU may have an address assigned to it, if requested by the owner.
• The ADU shall remain accessory to and under the same ownership as the principal single-family dwelling unit.
• Utility service, water and sewer, provided to an accessory dwelling unit shall tap into the existing service of the primary structure.

Temporary Healthcare Structures

• In accordance with North Carolina General Statute §160D-915, temporary healthcare structures shall be permitted as an accessory dwelling unit.

For questions regarding these regulations and for the most up-to-date information, please call, email, or visit the towns Planning Department.

Searching For An ADU Builder Serving North Carolina?

Now that you have a clearer understanding of ADU requirements in North Carolina, you may be looking for a builder who can help you stay compliant with local codes. With numerous incentives available for expanding affordable housing, North Carolina is an ideal place to add an ADU to your property, and Zook Cabins is here to help you do just that.

All of our ADU models range from 471 to 800 square feet, aligning with the sizing requirements in most North Carolina jurisdictions. Our Grove, A-Frame, and Luna models offer multiple bedrooms and bathrooms, designed for comfort and convenience. With sleek, modern aesthetics, our units deliver luxury living at a more affordable price than traditional homes, and they also make excellent rental properties.
Depending on where you reside, one of our park models, log cabins, or modern cabins may also match your localities’ ADU sizing requirements, providing you with a wide range of options for your accessory dwelling unit.

Tiny Home & ADU Rules By State: How Do They Compare?

In some parts of the U.S., park model tiny homes can be used as ADUs, while in others, they can’t. In certain areas, the rules for ADUs and park model tiny homes are nearly identical, but elsewhere, each structure type may be subject to entirely different regulations.

These rules don’t just vary from state to state—they can also differ between neighboring cities and towns.

Check out the table below to see how tiny home laws compare to ADU laws in North Carolina or how they differ across other states.