Accessory Dwelling Units in Virginia: Complete Guide to ADU Regulations in Virginia

Accessory Dwelling Units (ADUs for short) are appearing all over Virginia, and it’s pretty obvious why due to the unique benefits they offer! Think cozy backyard cottages, workspaces, or even your very own private spot to host guests or even tenants for extra rental income. ADUs are versatile and can be used for multiple needs, hobbies, and purposes. But before you start planning out your dream ADU, there are some essential rules and regulations you must know first.

This guide covers everything you’ll need to understand ADU regulations in Virginia! From what classifies as an ADU in Virginia to all the sizing, foundation, and zoning requirements for ADUs. All you need to know about ADUs in Virginia can be found here.

What Classifies as an ADU in Virginia?

To put it simply, in Virginia, an ADU (a.k.a. Accessory Dwelling Unit) is basically a bonus living space on the same property as your main house. It could be a cute little backyard cottage, a garage, or even a decked-out basement suite. But for it to officially count as an ADU, it has to check a few boxes.

It needs to be a real living space, meaning your ADU must have its own kitchen, bathroom, and sleeping area. It also has to be permanent (so no RVs [tiny homes] or mobile homes unless local rules allow it) and on the same lot as your main house. Different counties have different rules on what’s allowed, so before you start scheming up the perfect ADU space, make sure to check the local zoning laws!

Virginia allows ADUs primarily in residentially zoned areas, but local governments set their own rules. Some cities and counties are more flexible than others, so always check with local zoning authorities to see what’s allowed in your area!

Types of ADUs in Virginia

1. Detached ADU – A stand-alone structure, like a backyard cottage or tiny home.
2. Attached ADU – A separate living space that’s physically connected to the main house, such as an addition or a converted garage.
3. Interior ADU – A fully functional unit inside the primary home, often a basement or attic conversion.

What Are The ADU Laws in Virginia?

The state of Virginia is open to Accessory Dwelling Units (ADUs), but the exact rules depend on where you live. In most places, your ADU can be anywhere from 250 to 1,200 square feet, and you’ve got to keep it under 16–25 feet tall. They’re usually allowed in single-family residential zones (think R-1, R-2, etc.), but some areas have extra rules, like requiring a minimum lot size or making sure the ADU sits 5–10 feet away from property lines. Some cities say you must live in either the main house or the ADU, while others don’t care as long as it’s up to code.

If you’re thinking about building an ADU in Virginia, you’ll need to get the right permits along with zoning approval, construction plans, and inspections. Parking rules vary too, as some places make you add an extra off-street spot, while others let it slide, especially in city areas. Another factor to consider is the utilities, some ADUs can share water and electricity with the main house, but in different areas, you might need separate meters. Bottom line: before you start dreaming up your perfect backyard tiny home or rental unit, check your local zoning laws so you don’t hit any roadblocks!

Are Park Models the Same Thing As ADUs?

Although Park Models and ADUs share a lot of similarities, they are not classified as the same structure in Virginia as they fall under different categories. Park Model Homes are usually prefab structures that must remain under 400 square feet (in most states & areas), and it’s designed to be portable. Due to this reason they are classified as RVs in Virginia and must abide by the RV regulations and laws. That means most zoning laws don’t consider them ADUs, and they’re usually restricted to RV parks, campgrounds, or specific zones that allow tiny homes on wheels.

An ADU, on the other hand, is a permanent structure, whether it’s a backyard cottage, workspace, or even a basement apartment. Unlike a Park Model, it has to follow local building codes, zoning laws, and all the usual utility rules. That means it needs a solid foundation and proper hookups for water, electricity, and sewer, and yes, you’ll have to go through the whole permit process to get it approved. Basically, an ADU is treated like a smaller version of a regular house, and it’s built to stay in one spot and follow the same rules as any other home in your area.

What Counties in VA Allow ADUs?

All counties in Virginia allow ADUs, but whether you can build one on your property will depend entirely on the local zoning laws, property location, and other factors in your area. Each county (and even individual cities & towns) makes its own zoning and building rules, which will determine where ADUs are allowed and under what conditions. In some areas, building an ADU can be very simple, allowing them in certain residential zones, while other locations may require special permits or impose strict rules such as minimum lot sizes, occupancy rules, parking restrictions, and more. 

So, while ADUs are technically allowed across Virginia, your ability to add one depends on your specific property’s zoning designation and local regulations. If you’re considering an ADU, your best bet is to check with your county or city’s planning and zoning department to get the exact requirements for your area.

Below is a comprehensive list of all the counties in Virginia and their zoning laws.

Click your county’s name to find out whether ADUs are allowed in that region!

Does Accomack County, VA Allow ADUs?

Yes, you can build an Accessory Dwelling Unit (ADU) in Accomack County, but there are a few important laws that you must keep in mind. First off, it can’t be bigger than 650 square feet, so don’t dream too big when planning your ADU plans. Also, you’re only allowed one ADU per lot unless you get special approval. And, of course, you’ll need to get the right permits from the county’s Building and Zoning Office before construction. If you’re thinking about building an ADU in Accomack County, your best bet is to check in with the county officials first to make sure you’re following all the rules. You can contact the Accomack County Zoning Office for all the details!

Does Albemarle County, VA Allow ADUs?

Yes, Albemarle County does allow ADUs, but they classify them as “accessory apartments,” and there are some rules you gotta follow. First off, the ADU has to be inside your main house. l. It also can’t be bigger than 35% of your home’s total floor space, and you have to live on the property, either in the main house or the ADU. You’ll also need at least three off-street spots to stay compliant with the regulations. Before you start brainstorming plans, make sure to research the building permit process and talk with the Albemarle County Zoning & Planning department so you are aware of all the zoning requirements.

Does Alleghany County, VA Allow ADUs?

Yes, Alleghany County allows ADUs, but there are some zoning rules you’ll need to follow and abide by. The county has seven different zoning classifications, and each one has its own set of do’s and don’ts when it comes to adding an extra living space. If you’re thinking about a small detached unit under 256 square feet, you probably won’t have to worry about permits, but you’ll still have to follow zoning guidelines. Before you start building your ADU, it’s a good idea to check in with the county officials to make sure your property qualifies and see what restrictions you face. You can get the most up-to-date and accurate info from the Alleghany County Zoning and Planning Department, so you don’t run into any surprises!

Does Amelia County, VA Allow ADUs?

Yes, they do! ADUs are allowed in Amelia County as long as you abide by the local zoning regulations. First, your ADU has to meet building codes, including the Virginia Uniform Statewide Building Code (USBC), which means things like minimum ceiling heights and size restrictions (for example, tiny homes max out at 400 square feet). If you’re planning a detached ADU over 256 square feet, you’ll need a building permit, and you also have to follow setback rules so you’re not too close to property lines. Long story short, before you start building your ADU, we recommend contacting the Amelia County Zoning Department to make sure you’re complying with all the requirements. 

Does Amherst County, VA Allow ADUs?

Yes, Amherst County, VA, allows ADUs, but there are zoning and building rules you need to keep in mind. ADUs must comply with the county’s zoning ordinance, which includes setback requirements. For example, detached ADUs must be at least 15 feet from the rear lot line. All ADUs also need to meet the Virginia Uniform Statewide Building Code (USBC) to ensure structural safety and integrity. Before starting construction, you’ll need to get permits from the Amherst County Building Safety & Inspections Department. Even if a building permit isn’t required for minor projects, a zoning permit is still necessary. It always recommended that you get in contact with the local zoning office and obtain the most current information regarding ADU laws.

Does Appomattox County, VA Allow ADUs?

Yes, ADUs are allowed in Appomattox County, VA, as long as they comply with the zoning and building codes. ADUs must comply with the county’s zoning laws, which state the setback requirements, including a 30-foot front yard minimum (or 20 feet if parking is behind the front building line). They also need to meet Virginia’s Uniform Statewide Building Code (USBC) for safety and structural standards. Before starting construction, you’ll need to obtain the necessary permits from the Appomattox County Planning & Zoning Department to ensure your ADU meets all local requirements.

Does Arlington County, VA Allow ADUs?

Yes, Arlington County, VA, allows ADUs, and they’ve expanded their regulations over the years to make it easier for homeowners to build them. Detached ADUs are limited to 750 square feet or 50% of the main home’s footprint, whichever is smaller, and must follow setback rules (at least 5 feet from side property lines and 10 feet from the rear). The maximum height for your ADU is 20 feet, and either the main home or the ADU must be occupied by the owner. There is also a limit of three people per ADU. Parking requirements vary depending on location. Before moving forward, homeowners should check with the Arlington County Zoning Department to ensure they meet all local regulations.

Does Augusta County, VA Allow ADUs?

Yes, Augusta County, VA, allows ADUs, but there are some key rules you need to know before you can own one. If you’re adding an attached ADU, it must share a common wall with your main house, and it must stay under 600 square feet or 40% of your home’s footprint, maxing out at 900 square feet. Detached ADUs, such as garage apartments, are not allowed to be larger than 900 square feet or bigger than the structure they’re attached to. Plus, you’ll need an Administrative Permit, and your ADU has to meet Virginia’s building codes (USBC), including things such as the septic system. If you’re looking for the most accurate and current info, reach out to the Augusta County zoning and building department to make sure you’re complying with all the requirements.

Does Bath County, VA Allow ADUs?

Yes, ADUs are permitted in Bath County, VA, as long as they follow and comply with the zoning and building requirements. Although there is not much information regarding the specifics of the zoning laws in this county, your ADU must comply with the Virginia Uniform Statewide Building Code (USBC) to meet safety and structural standards, and you’ll need to secure the proper permits from the Bath County Building Department before starting construction. To make sure your ADU meets all local requirements, it’s best to check with the county first!

Does Bedford County, VA Allow ADUs?

Yes, Bedford County, VA, allows ADUs, but there are specific rules you’ll need to follow. A conditional use permit is required in all zoning districts, and the property must be at least 10,000 square feet. The ADU itself can’t exceed 1,000 square feet, but it can include one or two bedrooms and must match the architectural style of the main house. Parking must be off-street, and the unit must have properly sized utilities. Before moving forward, check with the Bedford County Department of Community Development to make sure you’re meeting all local regulations.

Does Bland County, VA Allow ADUs?

Yes! Bland County allows ADUs, but the rules are a little different from what you might expect. Here, ADUs are typically secondary living spaces inside buildings that are primarily commercial, professional, or service-based, so it’s not your usual backyard setup. That said, if you’re planning to add one, it must meet Virginia’s building codes (USBC), and you’ll need to make sure you obtain the right permits before getting started. We recommend you check with the Bland County Building, Planning, and Zoning Department first so they can inform you of any restrictions that the county might have.

Does Botetourt County, VA Allow ADUs?

Yes, Botetourt County, VA, allows Accessory Dwelling Units (ADUs) as long as your ADU adheres to the specific guidelines. Your ADU can’t be any bigger than 1,000 square feet. You’ll need to provide at least one additional off-street parking space for the ADU. For accessory structures over 256 square feet, a building permit is required. All plans must be submitted digitally, as paper plans larger than 11 by 17 inches are no longer accepted. To ensure your ADU project aligns and meets with all local regulations, it’s best to consult the Botetourt County Zoning Department to get the latest information. 

Does Brunswick County, VA Allow ADUs?

Yes, Brunswick County allows ADUs, but before you start planning, there are a few key things to keep in mind. The county typically limits properties to one dwelling per lot, but in some cases, an additional home might be approved. Any ADU here must follow Virginia’s building codes (USBC) and meet local setback rules. If you’re adding an accessory structure (like a detached ADU), keep in mind that anything within 20 feet of a property line can’t be more than one story high. It’s important to contact the local zoning and building department in order to get the most accurate information!

Does Buchanan County, VA Allow ADUs?

Yes, ADUs in Bunchana County are permitted. But there are a few key laws and regulations you need to know before beginning your ADU project. First, your ADU must follow Virginia’s building codes (USBC) to ensure it meets safety and structural standards. Second, you’ll need the right permits from the Buchanan County Building Department before you start construction. Your property has to meet minimum lot size requirements. If you have public water and sewer, your lot needs to be at least 10,000 square feet. If you have only one of those utilities, the requirement jumps to 15,000 square feet, and if you’re working with neither, you’ll need 20,000 square feet to qualify. It’s best to check in with the Buchanan County Planning and Zoning Department first to make sure your project meets all the local rules before getting started!

Does Buckingham County, VA Allow ADUs?

Yep, Buckingham County allows ADUs as long as your ADU follows the county’s zoning laws. Your ADU has to follow Virginia’s building codes (USBC) to meet safety standards. Before you start building, you’ll also need to get the right permits from the Buckingham County Building Inspections Department. Another big factor is the lot size requirements. If you have public water and sewer, your lot needs to be at least 10,000 square feet. If you have only one of those utilities, it jumps to 15,000 square feet, and if you have neither, you’re looking at a 20,000 square-foot minimum. Before making a move in your ADU project, check with the Buckingham County Planning and Zoning Department to make sure you’re in the clear!

Does Campbell County, VA Allow ADUs?

Yes, Campbell County allows ADUs, but there are some important details to keep in mind before getting started. If you’re planning an attached ADU, it has to share an entrance with the main house to maintain the look of a single-family home. Detached ADUs are also allowed but must be part of a lawful accessory building, follow setback rules, and stay under 1,000 square feet. Regardless of the type, each ADU is limited to two bedrooms. Permits are required, so before getting started with your ADU project, it’s best to check with the Campbell County Zoning Department to ensure everything is up to code and to make sure your complaint with all the laws.

Does Caroline County, VA Allow ADUs?

Yes, you can own an ADU in Caroline County, but the county refers to them as Accessory Apartments or In-Law Suites, each with its own rules. Accessory apartments must be under 750 square feet, can have up to two bedrooms, and require separate utility connections and a distinct address. In-law suites, on the other hand, are limited to one bedroom, must be integrated into the main home or a detached garage, and cannot have separate utilities or an independent address. Both types are capped at two occupants and must maintain the appearance of a single-family home. Before getting started, we recommend you contact the local zoning office to get the most up-to-date information.

Does Carroll County, VA Allow ADUs?

Yes, Carroll County, VA, permits ADUs, but there are specific guidelines to follow. Your ADU must comply with the Virginia Uniform Statewide Building Code (USBC), ensuring it meets all structural standards. Before starting construction, it’s important that you obtain the necessary permits. Additionally, your property must meet certain lot size requirements: if your property is served by both public water and sewer systems, it should be at least 10,000 square feet; if served by only one, it should be 15,000 square feet; and if served by neither, it should be 20,000 square feet. To ensure your project aligns with all local regulations, it’s best to consult the Carroll County Planning and Zoning Department before starting your ADU project.​

Does Charles City County, VA Allow ADUs?

Yes, ADUs are allowed in Charles City County. The ADU must abide by the county’s zoning and building regulations. The size of your ADU depends on the size of your main home. For example, if your primary house is 2,000 square feet, your ADU can’t be bigger than 800 square feet. Also, accessory buildings can’t be placed in the front yard setback and can’t be used as a primary residence. Before you get started, you’ll need to make sure you acquire the right permits from the county, so it’s best to check with the Charles City County Planning Department to make sure your project complies with all the regulations!

Does Charlotte County, VA Allow ADUs?

Yes, Charlotte County, VA, allows Accessory Dwelling Units (ADUs), but there are mandatory guidelines you must follow. Your ADU must comply with the Virginia Uniform Statewide Building Code (USBC) so it meets all the structural standards. Before starting construction, it’s essential to obtain the necessary permits from the Charlotte County Building Department. Additionally, your property must meet certain lot size requirements: if your property is served by both public water and sewer systems, it should be at least 10,000 square feet; if served by only one, it should be 15,000 square feet; and if served by neither, it should be 20,000 square feet. To ensure your project aligns with all local regulations, it’s best to consult the Charlotte County Planning and Zoning Department before proceeding.​

Does Chesterfield County, VA Allow ADUs?

Yes, Chesterfield County allows ADUs, but there’s a small catch: You need a Conditional Use Permit to build one. Both attached (like a basement apartment) and detached ADUs are allowed, but they must have a separate living space, sleeping area, bathroom, and full kitchen to qualify. If your space doesn’t include a full kitchen, it’s not an ADU, it’s just an accessory structure, which you can build without special approval. Either way, you’ll need permits before starting construction. Check with the Chesterfield County Planning Department to make sure your project meets local rules.

Does Clarke County, VA Allow ADUs?

Yes, Clarke County allows ADUs, but only on parcels of six acres or more in AOC and FOC zoning districts. The ADU must be under 600 sq. ft., house no more than two people, and sit within 300 feet of a primary home over 600 sq. ft. The Virginia Building Code (USBC) requires it to have separate living, sleeping, cooking, and sanitation spaces, but may share utilities or access points. Permits are required, so check with the Clarke County Planning and Zoning Department before starting your project to get a better understanding of the local zoning requirements.

Does Craig County, VA Allow ADUs?

Yes, Craig County allows ADUs, but only as guesthouses for temporary, non-paying guests, meaning no renting or leasing is allowed. Stays can’t exceed three months per year. ADUs must follow Virginia’s building codes (USBC) for size and safety. For a clearer understanding and more accurate information, reach out to the local zoning and development office.

Does Culpeper County, VA Allow ADUs?

Yes, ADUs are allowed in Culpeper County, but there are zoning and permitting requirements you must follow. An ADU must be a secondary dwelling on the same lot as a single-family home and must meet setback regulations. Before construction, you’ll need zoning and building permits to ensure compliance with county codes. To get started, check with the Culpeper County Planning and Zoning Department for details on requirements and approvals.

Does Cumberland County, VA Allow ADUs?

Yes, ​Cumberland County permits Accessory Dwelling Units (ADUs), but specific regulations apply. While the county’s Zoning Ordinance allows for accessory uses and structures, it does not explicitly define ADUs. It’s important that you consult the Cumberland County Planning and Zoning Department to determine how your proposed ADU fits within local regulations. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For detailed guidance and to ensure compliance with all local regulations, it’s best to consult the Cumberland County Planning and Zoning Department before proceeding with your ADU project.​

Does Dickenson County, VA Allow ADUs?

Yes, based on Virginia’s stance on ADUs, Dickenson County most likely allows ADUs granted that they follow the regulations. Dickenson County does not have zoning ordinances regulating ADU development, as highlighted in the county’s housing solutions report. Therefore, there are no specific county-level restrictions on building ADUs. However, all construction must comply with the Virginia Uniform Statewide Building Code (USBC). Before starting your ADU project, it’s essential to get in contact with the Dickenson County Building Department to ensure compliance with all regulations.

Does Dinwiddie County, VA Allow ADUs?

Yes, Dinwiddie County allows ADUs, but the rules aren’t exactly clearly stated. While the zoning ordinance permits accessory structures, it doesn’t explicitly define ADUs. Before making plans, check in with the Dinwiddie County Planning and Zoning Department to see if your ADU project aligns with their laws. All ADUs must meet Virginia’s building codes (USBC), including size limits and ceiling height requirements. Get in touch with the Dinwiddie County officials first to make sure everything regarding your ADU is up to code!

Does Essex County, VA Allow ADUs?

Yes, ADUs are allowed in Essex County! There are, however, a few key rules and laws that you must keep in mind when starting your ADU project. The county’s Zoning Ordinance defines an “Accessory Dwelling Unit” as a secondary dwelling unit located on the same lot as a principal single-family dwelling. ADUs must comply with the county’s zoning regulations, including setback requirements and size limitations. Before starting construction, it’s important that you obtain the needed permits from the Essex County Building Department. For detailed guidance and to ensure compliance with all local regulations, it’s recommended that you consult the Essex County Officials before starting with your ADU project.

Does Fairfax County, VA Allow ADUs?

Yes, in Fairfax County, ADUs are legal and allowed, but in this county, they are classified as Accessory Living Units (ALUs). ALUs must be inside your main house, meaning no backyard cottages or detached units are allowed. The space can’t exceed 800 sq. ft. or 40% of your home’s size (whichever is smaller) and is capped at two bedrooms. You must live in either the main house or the ALU, and the tenant limit is two people. You’ll also need one extra parking space to meet county rules. It’s best for you to contact and get the full details from the Fairfax County Planning & Development Department before you start building your ADU.

Does Fauquier County, VA Allow ADUs?

Yes, Fauquier County allows ADUs, but there are certain rules you’ll need to follow. Only one ADU is allowed per lot, and it must be on the same property as the primary residence. ADUs can be attached within the main home or in a detached structure, but if it has an external entrance, it must be on the side or rear. Occupancy is limited to three people, and before you start building, you’ll need to get your permits in order. Contact the Fauquier County Zoning Department to get all the details and avoid surprises.

Does Floyd County, VA Allow ADUs?

Yes, Floyd County permits ADUs as long as they adhere to the county’s zoning and building codes. Here, ADUs are detached residential units on the same lot as a single-family home, giving you extra space without breaking zoning laws. They must meet Virginia’s building codes (USBC), ensuring they have separate living, sleeping, cooking, and sanitation areas (though they might share utilities or access points). Before you start, check with the Floyd County Zoning or Building Department to make sure your project is up to code.

Does Fluvanna County, VA Allow ADUs?

Yes, ADUs are allowed in Fluvanna County. Only one ADU is allowed per property, but if you have 50+ acres, you might qualify for an extra one. ADUs must follow the same setback rules as the main house, so placement matters. Permits are also mandatory, so be sure to take care of that before building your ADU! We recommend you to check in with the Fluvanna County Zoning Department before you begin your project to ensure your project is fully compliant and ready to go.

Does Franklin County, VA Allow ADUs?

Yes, Franklin County does allow tiny homes. While the county’s Zoning Ordinance allows for the use of accessory uses and structures, it does not clearly define ADUs. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before beginning the construction, be sure to obtain the necessary permits from the county’s Building Inspections Department. For detailed guidance and to ensure compliance with all local regulations, contact the Franklin County Planning and Zoning Department before proceeding with your ADU project.

Does Frederick County, VA Allow ADUs?

Yes, Frederick County, VA, allows ADUs (Accessory Dwelling Units), but they must comply with residential zoning laws and specific local ordinances, including minimum lot size and setback distances. The county’s zoning ordinance states that an ADU’s floor area must not exceed 25% of the primary residence’s gross floor area or a minimum of 500 square feet, whichever is larger. For instance, if your main home is 2,000 square feet, your ADU can be up to 500 square feet; if your home is 4,000 square feet, the ADU can be up to 1,000 square feet. In RP (Residential Performance), R4 (Residential Planned Community), and MH1 (Mobile Home) Zoning Districts, ADUs are permitted only if attached to the main dwelling. In these districts, mobile homes are not allowed as ADUs. In contrast, in the RA (Rural Areas) Zoning District, detached ADUs are permitted as long as they meet the required setbacks for accessory structures. For more in-depth instruction and to ensure that you are complying with all local regulations, consult the Frederick County Planning and Development Department.

Does Giles County, VA Allow ADUs?

Yes, ADUs are allowed in Giles County. Any accessory structure on your lot must be secondary to the main home, and if you want to use it as a living space, you’ll need a conditional use permit. All ADUs must also meet Virginia’s building codes (USBC) for safety, including size and ceiling height requirements. Before moving forward, make sure you have acquired all the needed permits, and check in with the Giles County Planning and Zoning Department to make sure everything is up to code and good to go!

Does Gloucester County, VA Allow ADUs?

Yes, Gloucester County allows ADUs, but there are strict guidelines to follow. The property owner must live in the main home at the time of the ADU application. ADUs can be attached or detached, but only one is allowed per parcel. Size limit also depends on lot size, on lots under two acres, the ADU can’t exceed 800 sq. ft. or 35% of the main home’s floor area (whichever is greater), while on lots two acres or more, the limit is 800 sq. ft. or 49% of the main home’s size. Detached ADUs must meet setback rules for accessory structures. The best course of action would be to contact the Gloucester County Zoning Department to ensure your project complies with the regulations and codes.

Does Goochland County, VA Allow ADUs?

Yes, Goochland County permits Accessory Dwelling Units (ADUs), referred to as Accessory Family Housing Units. Attached units are permitted by right in various residential zoning districts, including A-1, A-2, R-R, R-P, R-1, R-3, R-N, and R-O. Detached units require a Conditional Use Permit (CUP). Only family members related to the primary resident can live in these units, and renting them out separately from the main dwelling is prohibited. Before using an attached unit, property owners must file an affidavit with the Goochland County Circuit Court Clerk, agreeing to comply with all use standards. For detailed guidance and to ensure compliance with all local regulations, contact the Goochland County Planning and Zoning Department to ensure your ADU follows all the requirements. 

Does Grayson County, VA Allow ADUs?

Yes, ADUs are allowed in Grayson County. However, the rules and regulations do not clearly regulate ADUs. The county’s Subdivision Ordinance covers housing and land use, but it doesn’t specifically define ADUs. Whatever you build must meet Virginia’s building codes (USBC), including size and safety standards. Be sure to keep in mind that permits are required as well! We recommend reaching out to the Grayson County Zoning Department to ensure your ADU project complies with local laws. 

Does Greene County, VA Allow ADUs?

Yes, Green County allows ADUs as long as they comply with the local zoning ordinances. Greene County allows ADUs, but there are a few hoops to jump through. Only one ADU per property is allowed, and the owner must live on-site, either in the main house or the ADU. ADUs must be between 300 and 800 square feet, with no more than two bedrooms, and require two off-street parking spaces. They can be inside the main home or in a legal accessory structure. To ensure a smooth process and a clear understanding of the laws, it is recommended that you contact the Green County Zoning and Planning Department as they can provide you with the latest and most accurate information.

Does Greensville County, VA Allow ADUs?

Yes, Greensville County does allow ADUS, but they don’t have clear ADU regulations. However, the county’s Planning Department oversees land use and development, ensuring compliance with local regulations. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before starting construction, ensure you obtain the necessary permits from the county’s Building Inspections Department. We recommend contacting Greenville County’s planning department to obtain the latest ADU laws and rules.

Does Halifax County, VA Allow ADUs?

Yes, Halifax County allows ADUs, but the rules aren’t spelled out in detail. The county’s zoning ordinance permits accessory structures, but it doesn’t specifically define ADUs, so before you start planning, check with the Halifax County Planning and Zoning Department to see what’s allowed. Whatever you build, it must meet Virginia’s building codes (USBC) for size, safety, and structure. And don’t forget that permits are required before you begin building your ADU. 

Does Hanover County, VA Allow ADUs?

Yes, ADUs are legal and allowed in Hanover County. In many residential zoning districts, you can add an apartment for qualifying family members with a Special Exception Permit. The apartment must be attached to the main house or another building on the property, like a garage. To get started, you’ll need to submit a set of plans, a plot plan showing the proposed structure’s location with all setbacks, and a completed Building Permit Application. For detailed information and to ensure compliance with all local regulations, contact the Hanover County Planning Department before proceeding with your ADU project.

Does Henrico County, VA Allow ADUs?

Yes, Henrico County, VA, allows Accessory Dwelling Units (ADUs) as long as they meet zoning requirements and obtain a conditional use permit to build one. The ADU’s floor area must not exceed 800 square feet or 35% of the principal dwelling’s finished floor area, whichever is less. Additionally, one extra off-street parking space is required for the ADU. The ADU must be a permanent structure and cannot be used for short-term rentals. Before proceeding, it’s essential to consult the Henrico County Planning Department to ensure compliance with all local regulations.

Does Henry County, VA Allow ADUs?

Yes, Henry County does allow ADUs. However, they currently don’t have clear regulations permitting Accessory Dwelling Units (ADUs). The county’s Energy Action Plan includes a medium to long-term goal (4-5 years) to evaluate the allowance of ADUs in existing primary residences to increase housing density. Plus, all residential structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For detailed information and to ensure you are complying with all local regulations, it’s best to contact the Henry County Planning and Zoning Department to get a clearer understanding of their regulations.

Does Highland County, VA Allow ADUs?

Yes, Highland County allows ADUs, but the full details and regulations aren’t clearly implemented in their zoning regulations. The county doesn’t define ADUs in its zoning ordinances, but accessory structures are permitted! Before making any plans, check with the Highland County Department of Building and Zoning to see what’s allowed. Whatever you build, it must meet Virginia’s building codes (USBC) for size, safety, and structure. For the most accurate and up-to-date information, contact the Highland County Zoning Department.

Does Isle of Wight County, VA Allow ADUs?

Yes, Isle of Wight County allows ADUs, but there are strict guidelines you must follow. Only one ADU is allowed per lot, either within the primary home or in an accessory structure, and the lot must meet 100% of the minimum size requirement for its zoning district. Owner occupancy is required, meaning the property owner must live in either the main home or the ADU. Size limits can vary; for example, ADUs inside the main home can’t exceed 1,000 sq. ft. or 35% of the primary home’s living area (whichever is less), while ADUs in accessory buildings can be up to 50% of that building’s size. Entries must be on the side or rear to maintain the look of a single-family home, and one additional parking space is required. Health department approval is also necessary for water and sewage. Before moving forward, be sure to get all the proper permits and get in touch with the Isle of Wight County Planning and Zoning Department to make sure your ADU is on par with all the regulations.

Does James City County, VA Allow ADUs?

Yes, ADUs are allowed in James City County, but there are regulations depending on whether the unit is attached or detached. Attached ADUs are limited to one per single-family home, can’t take up more than 35% of the home’s floor area, and must have entrances on the side or rear to maintain the look of a single-family house. Detached ADUs are also limited to one per lot, can’t be larger than 400 square feet, and can’t exceed 50% of the floor area of the accessory structure they’re built in. The property owner or a family member must live in either the main house or the ADU and if the property relies on a well or septic system, health department approval is required. Before getting started, check with the James City County Planning Division to ensure your project meets all local regulations.

Does King and Queen County, VA Allow ADUs?

Yes, King and Queen County permits Accessory Dwelling Units (ADUs), as long as the ADU complies with the regulations. While the county’s zoning ordinances do not specifically define ADUs, they do allow accessory structures. It’s important for you to consult the King and Queen County Planning and Zoning Department to determine how your ADU fits within local regulations. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before starting construction, ensure you obtain all necessary permits from the county’s Building Inspections Department. For the most accurate information and to make sure you are complying with all local regulations, it’s best to consult the King and Queen County Planning and Zoning Department.

Does King George County, VA Allow ADUs?

Yes, King George County allows ADUs, but there are a few important factors to keep in mind. Only one ADU is permitted per lot, whether attached (inside a basement or attic) or detached (above a garage or in a guesthouse), with a minimum 10-foot separation from the main house if detached. The ADU cannot be sold separately or rented for less than 30 days, and manufactured homes, RVs, and trailers cannot be used as ADUs. Lot size requirements will vary. For example, in agricultural zones, you need at least 5 acres, while residential and planned development zones require between 15,000 sq. ft. and 2 acres, depending on water and sewer access. Detached ADUs are capped at 800 sq. ft. or 35% of the primary home’s finished floor area (whichever is greater), while attached ADUs cannot exceed the first-floor footprint of the main home. ADUs must follow all setback, height, and dimensional codes, and one additional off-street parking space is required. Before getting started building your ADU, check with the King George County Planning and Zoning Department to make sure your project is fully compliant.

Does King William County, VA Allow ADUs?

Yes, ADUs are allowed in King William County as long as the ADU complies with all the regulations and codes. According to the county’s zoning ordinance, an accessory dwelling unit is defined as “a smaller, independent residential dwelling unit located on the same parcel as a separate single-family dwelling.” Detached ADUs are limited to a maximum of 800 gross square feet. All ADUs must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For the most accurate and current information, we recommend contacting the King William County Planning and Zoning Department.

Does Lancaster County, VA Allow ADUs?

Yes, Lancaster County allows ADUs, but the rules aren’t clearly stated in the regulations. While the county doesn’t specifically define ADUs in its zoning ordinances, accessory structures are permitted, so your ADU project should most likely qualify. Check with the Lancaster County Building Office before making any further moves. Whatever you build must meet Virginia’s building codes (USBC), covering size limits, safety, and structure requirements. The best choice would be to contact the Lancaster County Zoning Department to get clarification regarding your ADU project.

Does Lee County, VA Allow ADUs?

Yes, Lee County allows ADUs, but there are some restrictions to keep in mind. The county’s zoning ordinance doesn’t allow accessory buildings to be used as dwellings unless they’re for domestic employees, caretakers, or tenants working on the property. That means ADUs are permitted, but mainly for those with a direct connection to the land. Whatever you build, it must meet Virginia’s building codes (USBC), covering size, structure, and safety standards. Before moving forward, check with the Lee County Zoning Department to make sure everything is up to code.

Does Loudoun County, VA Allow ADUs?

Yes, Loudoun County allows ADUs as long as you follow the few rules set in place. The county regulates ADUs to ensure they fit the character of the neighborhood and stay in line with zoning requirements. Before building, permits are required, and everything must meet Virginia’s building codes (USBC) for size, structure, and safety. Contact the Loudoun County Department of Building and Development to make sure your ADU is fully compliant before moving forward!

Does Louisa County, VA Allow ADUs?

Yes, ADUs are allowed in Louisa County, with a few specific guidelines that must be followed. In the Agricultural (A-1) zoning district, ADUs are permitted by right, meaning you can build one without a special permit. However, in Residential Limited (R-1) and Residential General (R-2) districts, constructing an ADU requires obtaining a conditional use permit. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For detailed guidance and to ensure compliance with all local regulations, it’s best to talk to the Louisa County Planning and Zoning Department before proceeding with your ADU project.​

Does Lunenburg County, VA Allow ADUs?

Yes, Lunenburg County allows ADUs, but only under certain conditions. The zoning ordinance doesn’t allow accessory buildings to be used as dwellings unless they house household employees or caretakers working on the property. That means no renting them out or using them as standalone residences. Any ADU must also meet Virginia’s building codes (USBC), covering size, structure, and safety requirements. Want to be sure your ADU is good to go? Get in contact with the Lunenburg County Planning and Zoning Department to get a better understanding of the codes and regulations.

Does Madison County, VA Allow ADUs?

Yes, Madison County permits the use of ADUs! While the county’s zoning ordinances do not explicitly define ADUs, they do permit accessory structures. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For detailed guidance and to ensure compliance with all local regulations, it’s recommended that you consult the Madison County Zoning and Planning Department before proceeding with your ADU project.

Does Mathews County, VA Allow ADUs?

Yes, Mathews County allows ADUs, but the rules aren’t super clear. The county doesn’t explicitly define ADUs in its zoning laws, but accessory structures are allowed, so your project might fit. Before making any moves, check with the Mathews County Building Department to make sure you’re on the right track. Whatever you build, it has to follow Virginia’s building codes (USBC) for size, safety, and structure. To get the most up-to-date and accurate information, contact the Mathews County Zoning Department.

Does Mecklenburg County, VA Allow ADUs?

Mecklenburg County allows ADUs but not without restrictions. The zoning ordinance doesn’t specifically define ADUs, but it does permit accessory structures. These structures can’t be used as dwellings unless they’re for household employees or caretakers working on the property. If you’re considering an ADU, it still needs to meet Virginia’s building codes (USBC) for size, structure, and safety. Be sure to check with the Mecklenburg County Planning and Zoning Department to see if your ADU aligns with the county’s zoning requirements.

Does Middlesex County, VA Allow ADUs?

Yes, Middlesex County permits Accessory Dwelling Units (ADUs), which are subject to specific guidelines outlined in the county’s zoning ordinance. According to Section 15-22, ADUs are allowed as a by-right use in certain zoning districts, meaning they can be constructed without a special exception or conditional use permit. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For detailed guidance and to ensure compliance with all local regulations, it’s recommended that you contact the Middlesex County Building and Zoning Department.

Does Montgomery County, VA Allow ADUs?

Yes, ADUs are allowed in Montgomery County. While the county doesn’t explicitly define ADUs in its zoning laws, accessory structures are permitted. The key is checking with the Montgomery County Planning and GIS Services to confirm the details before making any moves. Every structure must meet Virginia’s building codes (USBC) for size, safety, and structural integrity, and permits are required before construction starts. Contact Montgomery County’s Zoning Department for the most accurate information and to ensure your ADU complies with all the regulations. 

Does Nelson County, VA Allow ADUs?

ADU regulations are a grey area in Nelson County; Nelson County is working toward allowing ADUs, with recent recommendations, to define them as a by-right use in residential and agricultural zoning districts. While the county doesn’t currently have clear ADU regulations, accessory structures are permitted, which means your project may qualify. Before moving forward, check with the Nelson County Planning and Zoning Department to confirm what’s allowed. Any ADU must also meet Virginia’s building codes (USBC) for size, structure, and safety. Get in touch with the county first to ensure your ADU meets local regulations.

Does New Kent County, VA Allow ADUs?

Yes, New Kent County allows ADUs, but you’ll need to follow specific zoning rules. These units are permitted under certain conditions, but they must meet all building code requirements to be approved. Any ADU must comply with Virginia’s building codes (USBC), covering size, structure, and safety standards. Before making any plans, permits are required, so don’t skip that step. Check with the New Kent County Planning Department to make sure your project is up to code before moving forward.

Does Northampton County, VA Allow ADUs?

Northampton County permits Accessory Dwelling Units (ADUs) under specific guidelines. According to the county’s zoning ordinance, an ADU’s size cannot exceed 50% of the gross heated floor area of the principal single-family dwelling. ADUs can be created through various methods, including internal conversions, external attachments, or new constructions, each with specific setback and height requirements. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. For detailed guidance and to ensure compliance with all local regulations, it’s advisable to consult the Northampton County Zoning Department before proceeding with your ADU project.​

Does Northumberland County, VA Allow ADUs?

Yes, ADUs are allowed in Northumberland County. The county’s zoning ordinance allows for guest houses as accessory structures in the Residential General District (R-1). These guest houses must adhere to area regulations, setbacks, frontage, yard requirements, and height restrictions as specified in the ordinance. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before starting construction, ensure you obtain the necessary permits from the county’s Building and Zoning Department. For detailed guidance and to ensure compliance with all local regulations, it’s advisable to consult the Northumberland County Planning and Zoning Department before proceeding with your ADU project.

Does Nottoway County, VA Allow ADUs?

Yes, Nottoway County allows ADUs. While the county’s zoning ordinances do not clearly define ADUs, they do permit accessory structures. Due to this, it’s important to consult the Nottoway County Planning Department to determine how your proposed ADU fits within local regulations. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before starting construction, ensure you obtain the necessary permits from the county’s Building Department. For detailed guidance and to ensure compliance with all local regulations, it’s advisable to consult the Nottoway County Planning Department before proceeding with your ADU project.

Does Orange County, VA Allow ADUs?

Yes, Orange County allows ADUs, as long as you follow the specific rules in the zoning code and regulations. Generally, only one principal dwelling is permitted per parcel. However, one accessory apartment is allowed if it’s smaller than the existing home, measured in gross square footage. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before starting construction, ensure you obtain the necessary permits from the county’s Building and Zoning Department. For more information and to make sure you are complying with all local regulations, it’s best to contact the Orange County Planning and Zoning Department before proceeding with your ADU project.​

Does Page County, VA Allow ADUs?

Yes, Page County permits ADUs, officially classified as guesthouses, but strict regulations apply. Each property is limited to one guesthouse, which must be detached from the main residence and cannot be sold separately. These units are permitted in W-C (Woodland Conservation), A-1 (Agriculture), R-1 (Residential), and P-R (Park-Recreation) zoning districts, excluding federally or state-owned land. To ensure compliance, all ADUs must meet Virginia’s Uniform Statewide Building Code (USBC) for size, safety, and structural integrity, and permits are mandatory before construction begins. For a smooth approval process, consult the Page County Planning and Zoning Department before getting started.

Does Patrick County, VA Allow ADUs?

Yes, Patrick County allows ADUs, but navigating the regulations requires careful planning. While the county’s zoning ordinances don’t explicitly define ADUs, accessory structures are permitted, meaning your project may qualify. However, every unit must comply with Virginia’s Uniform Statewide Building Code (USBC), ensuring proper size, safety, and structural integrity. Before starting construction, securing the right permits is essential, and county approval is a must. To streamline the process and avoid delays, consult the Patrick County Planning and Zoning Department for guidance on compliance and the next steps.

Does Pittsylvania County, VA Allow ADUs?

Yes, Pittsylvania County allows ADUs, but the regulations require a few details you must keep in mind. While zoning laws don’t explicitly outline ADUs, accessory structures are permitted, meaning your project may qualify under specific conditions. Compliance with Virginia’s Uniform Statewide Building Code (USBC) is mandatory, covering size, safety, and structural integrity. Additionally, securing the right permits is mandatory before construction begins. To ensure a smooth approval process and avoid setbacks, consult the Pittsylvania County Community Development Department for expert guidance on zoning, permitting, and the next steps.

Does Powhatan County, VA Allow ADUs?

Yes, Powhatan County permits ADUs, but strict guidelines ensure they complement existing residences. Only one detached ADU is allowed per single-family home, with size limitations capped at 35% of the primary dwelling’s floor area—or 50% in A-10 zoning districts. Owner occupancy is mandatory in either the ADU or the main home, and an additional off-street parking space is required. Every unit must meet Virginia’s Uniform Statewide Building Code (USBC) to guarantee safety, structural integrity, and compliance. Before starting the construction process, permits are mandatory, so connect with the Powhatan County Planning and Zoning Department to ensure your project complies with all the codes and regulations.

Does Prince Edward County, VA Allow ADUs?

Yes, Prince Edward County allows ADUs, but the specifics depend on zoning regulations. The county permits accessory dwelling units under certain conditions, meaning you’ll need to ensure your project meets all building code requirements before moving forward. Virginia’s Uniform Statewide Building Code (USBC) dictates size limits, structural integrity, and safety standards, so compliance is non-negotiable. Permits are required, and skipping this step could lead to delays. Before taking the next step, consult the Prince Edward County Planning and Zoning Department to make sure your ADU is good to go.

Does Prince George County, VA Allow ADUs?

Yes, Prince George’s County allows ADUs. However, there are a few strict requirements to keep in mind. The zoning ordinance permits accessory structures in certain residential districts (R-1, R-2, and R-3), but ADUs aren’t explicitly defined, meaning approval can depend on zoning interpretations. Every structure must still meet Virginia’s building codes (USBC) for size, safety, and habitability. If you’re considering an ADU, your best move is to check with the Prince George County Planning and Zoning Department to get clarity on what’s allowed and what’s not.

Does Prince William County, VA Allow ADUs?

Yes, Prince William County allows ADUs, but the requirements depend on your zoning district. Accessory structures are permitted in agricultural and residential zones, but there are limits. Farm employee housing is allowed in agricultural areas, but only at a ratio of one unit per 10 acres. If you’re planning an ADU, make sure it meets Virginia’s Uniform Statewide Building Code (USBC) for size, safety, and livability. Permits are required, so don’t start building yet without obtaining the permits. Reach out to the Prince William County Planning and Zoning Department to confirm exactly what’s allowed on your property.

Does Pulaski County, VA Allow ADUs?

Yes, Pulaski County allows ADUs, but there are clear guidelines you’ll need to follow. Only one ADU is permitted per lot, and it must be located in the side or rear yard, never closer to the street than the primary home. Size is capped at 2,000 heated square feet, and the height can’t exceed two stories or the height of the main home, whichever is shorter. Setback rules match those of the primary structure, and permits are required before you can start building. Every ADU must also comply with Virginia’s building codes (USBC) for safety, structural integrity, and livability. Check with the Pulaski County Planning and Zoning Department before moving forward so you can ensure your ADU complies with all regulations.

Does Rappahannock County, VA Allow ADUs?

Yes, Rappahannock County allows ADUs, but zoning restrictions will dictate what’s possible on your property. While the county doesn’t explicitly outline ADUs in its ordinances, accessory structures are permitted. Any structure over 10 feet tall must be set back at least its own height from the rear property line, which could impact where your ADU can be built. It also needs to comply with Virginia’s Uniform Statewide Building Code (USBC), ensuring it meets size, safety, and structural integrity standards. Permits are mandatory, so don’t move forward without approval. Consult the Rappahannock County Planning and Zoning Department to get a clear understanding of what’s allowed.

Does Richmond County, VA Allow ADUs?

Yes, Richmond County allows ADUs, but the specifics depend on zoning rules. While the county doesn’t provide a direct ADU definition, accessory structures are permitted with placement and size restrictions. For instance, if an accessory structure is taller than 10 feet, it must be set back at least its own height from the rear property line, which may affect your building plans. Additionally, the ADU must meet Virginia’s Uniform Statewide Building Code (USBC) for safety, structure, and occupancy standards. Permits are required, so don’t start building without county approval. To ensure your ADU complies with all regulations, reach out to the Richmond County Planning and Zoning Department before moving forward.

Does Roanoke County, VA Allow ADUs?

Yes, Roanoke County permits Accessory Dwelling Units (ADUs), but specific guidelines apply. According to the county’s zoning ordinance, an accessory apartment is defined as a secondary dwelling unit established in conjunction with and clearly subordinate to a principal single-family detached dwelling unit. Key regulations include a minimum floor area of 300 square feet and the requirement of one additional parking space beyond what is required for the principal dwelling. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for size limitations and ceiling height. Before starting construction, ensure you obtain the necessary permits from the county’s Building Safety Department. For detailed guidance and to ensure compliance with all local regulations, it’s advisable to consult the Roanoke County Planning and Zoning Department before proceeding with your ADU project.​

Does Rockbridge County, VA Allow ADUs?

Rockbridge County allows ADUs, but they come with specific restrictions. If you’re adding a secondary dwelling unit, it must be clearly subordinate to the primary home and have a minimum floor area of 300 square feet. Parking is also a factor, and you’ll need to provide at least one additional off-street parking space beyond what’s required for the main house. Of course, every unit must meet Virginia’s Uniform Statewide Building Code (USBC) for size, structure, and livability, and permits are mandatory before construction begins. To get the full breakdown of what’s allowed, check in with the Rockbridge County Planning and Zoning Department.

Does Rockingham County, VA Allow ADUs?

Yes, Rockingham County allows ADUs, giving homeowners some flexibility in adding extra living space. Whether you’re converting a basement, garage or building a separate backyard unit, you’re allowed one ADU per single-family lot. It can be attached to the main home or stand-alone, but either way, it must meet zoning and building regulations. You’ll also need to follow Virginia’s Uniform Statewide Building Code (USBC) for safety, structure, and occupancy limits. Don’t forget that the county requires permits before construction begins. If you’re planning an ADU, your best move is to check with the Rockingham County Planning and Zoning Department to ensure your project is fully compliant.

Does Russell County, VA Allow ADUs?

Yes, ADUs are allowed in Russell County. However, the county’s zoning laws don’t clearly define ADUs, which means adding one to your property isn’t a simple yes-or-no answer. The county generally allows only one single-family dwelling per lot, so whether an ADU is permitted depends on your zoning district. On a broader scale, Virginia’s Uniform Statewide Building Code (USBC) sets the standards for safety, size, and structural integrity, and statewide policy discussions could influence future ADU regulations. Before making any plans, it’s best to check directly with the Russell County Planning and Zoning Department to see if an ADU is allowed on your property. Local rules can change, and getting the right information upfront will save you time and headaches.

Does Scott County, VA Allow ADUs?

Yes, Scott County allows ADUs, but there are zoning rules you’ll need to follow. You’re permitted to have one principal dwelling and one accessory dwelling per lot, but the ADU must meet the same setback requirements as the main home. Whether you’re planning an attached unit, garage apartment, or standalone backyard cottage, it needs to comply with Virginia’s Uniform Statewide Building Code (USBC) for fire safety, structural integrity, and occupancy standards. Permits are mandatory, so don’t start building without approval. To avoid any surprises, consult the Scott County Planning and Zoning Department before moving forward with your project.

Does Shenandoah County, VA Allow ADUs?

Yes, Shenandoah County permits Accessory Dwelling Units (ADUs), but specific guidelines apply. According to the county’s zoning ordinance, one principal dwelling and one accessory dwelling are allowed per lot, provided the accessory dwelling meets the same setback requirements as the main structure. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for means of egress and fire separation. Before starting construction, ensure you obtain the necessary permits from the county’s Building Inspections Department. For detailed guidance and to ensure compliance with all local regulations, it’s advisable to consult the Shenandoah County Planning and Zoning Department before proceeding with your ADU project.​

Does Smyth County, VA Allow ADUs?

Smyth County allows ADUs, but they come with zoning restrictions. Each lot is limited to one primary residence, and an ADU is only permitted if zoning allows it in that district. Whether you’re planning an attached unit, garage conversion, or separate backyard cottage, the ADU must follow Virginia’s Uniform Statewide Building Code (USBC) for fire safety, structure, and livability. Permits are required, so before you break ground, it’s crucial to confirm that your property qualifies. To get the details specific to your location, check with the Smyth County Planning and Zoning Department before moving forward.

Does Southampton County, VA Allow ADUs?

Southampton County allows ADUs, but there are a few strict rules to keep in mind. First, your ADU must be on the same tax parcel as the main home and cannot be closer to the street than the primary structure. The size is also limited, ADUs can’t exceed 50% of the main home’s area and are capped at 1,000 square feet, with a maximum of four occupants. Owner occupancy is required, meaning you must live in either the main home or the ADU. Manufactured homes aren’t allowed as an ADU or primary structure, and only one ADU is permitted per lot. Before you get started, your project must meet Virginia’s Uniform Statewide Building Code (USBC), and permits are required before construction begins. Contact the Southampton County Planning and Zoning Department for full details and for the most accurate information.

Does Spotsylvania County, VA Allow ADUs?

Spotsylvania County allows ADUs, but only in certain zoning districts and with restrictions. In Mixed-use (MU) zones, an ADU can be placed above a garage, making it a great option for rental income or extra living space. However, outside of MU districts, ADU approvals may depend on zoning interpretations. Regardless of location, every ADU must comply with Virginia’s Uniform Statewide Building Code (USBC) for fire safety, structure, and occupancy standards. Permits are mandatory, so don’t start building without county approval. To avoid delays and get clear guidelines for your property, consult the Spotsylvania County Planning and Zoning Department before moving forward.

Does Stafford County, VA Allow ADUs?

Yes, Stafford County allows ADUs, but there are strict limits in place. The unit can’t be larger than 25% of the total floor area of the main home, and only one ADU is permitted per lot, so don’t expect to build units on the same property. Whether you’re converting a basement, finishing an attic, or building a separate structure, your ADU must comply with Virginia’s Uniform Statewide Building Code (USBC) for fire safety, structure, and occupancy standards. Keep in mind that permits are required before you start construction. To avoid any zoning regulation issues, double-check with the Stafford County Planning and Zoning Department before moving forward with your project.

Does Sussex County, VA Allow ADUs?

Yes, Sussex County allows ADUs, but zoning regulations determine what’s allowed on your property. The county defines accessory structures as those that are secondary to the main home, meaning your ADU must be smaller and clearly subordinate to the primary residence. Whether you’re planning a guest house, backyard cottage, or converted garage, your unit must comply with Virginia’s Uniform Statewide Building Code (USBC) to ensure fire safety, proper egress, and structural soundness. Permits are required, so before you start designing your ADU, check with the Sussex County Planning and Zoning Department to make sure your plans align with local regulations.

Does Surry County, VA Allow ADUs?

Yes, Surry County allows ADUs, you’re just required to follow the rules stated in the zoning codes and regulations. Your ADU must be secondary to the main home, whether it’s attached, a converted space, or a detached unit in the backyard. It cannot dominate the property and must meet zoning requirements for lot size, placement, and setbacks. Additionally, every ADU must be built to Virginia’s Uniform Statewide Building Code (USBC) standards for fire safety, structural integrity, and proper egress. Confirm all the details with the Surry County Planning and Zoning Department to ensure your project is fully compliant.

Does Tazewell County, VA Allow ADUs?

Yes, Tazewell County allows ADUs, but there are zoning rules that determine how and where you can build. An ADU must be clearly secondary to the main home, whether it’s a basement apartment, garage conversion, or a separate structure in the backyard. The unit must meet Virginia’s Uniform Statewide Building Code (USBC) for fire safety, structural integrity, and proper egress, ensuring it’s safe for occupancy. Additionally, permits are required before you start construction. To make sure your ADU complies with local regulations, reach out to the Tazewell County Planning and Zoning Department before moving forward with your plans.

Does Warren County, VA Allow ADUs?

Yes, Warren County does allow ADUs. However, Warren County does not allow standalone ADUs in Agricultural and Residential districts; only one principal structure is permitted per lot. Using accessory buildings as dwellings is strictly prohibited unless zoning explicitly allows it. However, home additions to expand living space are permitted if they comply with Virginia’s Uniform Statewide Building Code (USBC). If you’re considering an expansion, check with the Warren County Planning and Zoning Department to ensure you are complying with all the regulations before starting.

Does Washington County, VA Allow ADUs?

Yes, Washington County does allow ADUs, but Washington County does not explicitly permit ADUs in residential zones. R-1 and R-2 districts allow single-family and two-family homes but do not specify ADUs as a permitted use. Without clear zoning approval, building an ADU may not be straightforward. However, Virginia’s Uniform Statewide Building Code (USBC) provides safety and structural guidelines that could apply. Before making plans, check with the Washington County Zoning Department to confirm local requirements.

Does Westmoreland County, VA Allow ADUs?

Yes, Westmoreland County allows ADUs, but with a few restrictions. Only one ADU is permitted per lot, and it cannot exceed 1,200 square feet. The unit may be inside the main home, an accessory building, or an agricultural structure as long as zoning requirements are met. It must also comply with Virginia’s Uniform Statewide Building Code (USBC) for safety and egress. Check with the Westmoreland County Planning and Zoning Department before starting your project.

Does Wise County, VA Allow ADUs?

Yes, Wise County allows ADUs, but specific regulations and permitting processes apply. According to the county’s zoning ordinance, an accessory building is defined as a structure used for purposes customarily incidental and clearly subordinate to the principal use of the lot on which it is located. Additionally, all structures must comply with the Virginia Uniform Statewide Building Code (USBC), which includes requirements for means of egress and fire separation. Before starting construction, ensure you obtain the necessary permits from the county’s Building and Zoning Department. For detailed guidance and to ensure compliance with all local regulations, it’s advisable to consult the Wise County Planning and Zoning Department before proceeding with your ADU project.​

Does Wythe County, VA Allow ADUs?

Yes, Wythe County allows ADUs. Whether you’re looking to add a guest house, backyard cottage, or in-law suite, the county has specific zoning rules that determine what’s allowed. Every ADU must meet Virginia’s Uniform Statewide Building Code (USBC) for fire safety, structural integrity, and proper egress. Permits are mandatory, and skipping them could mean costly delays. Before you get into planning, reach out to the Wythe County Planning and Zoning Department to confirm exactly what’s allowed on your property, as they have the most up-to-date information.

Does York County, VA Allow ADUs?

Yes, York County allows ADUs, as long as the ADU complies with the local regulations. If you’re planning a backyard cottage or garage apartment, keep in mind that the ADU can’t exceed 1,000 square feet or 35% of the main home’s floor area, whichever is smaller. Need more space? A Special Use Permit may allow up to 49% of the main home’s size. Detached ADUs also have lot coverage limits, meaning they can’t take up more than 75% of the principal home’s footprint. As always, Virginia’s Uniform Statewide Building Code (USBC) applies, and permits are required before construction. Consult the York County Planning and Zoning Department before planning as they can provide you with the lates information for ADU regulations and codes.

Find Your ADU Regulations in VA by City

Below is a comprehensive list of 10 cities in Virginia and their zoning laws.

Click your city’s name to determine whether ADUs are allowed in that area!

Does Richmond, VA Allow ADUs?

Yes, Richmond allows ADUs by right in single-family residential zones, making it easier for homeowners to create in-law suites, rental units, or guest houses. The ADU cannot exceed one-third of the main home’s floor area or 500 square feet, whichever is larger. It must follow zoning regulations for height, setbacks, and lot coverage, and attached units must share utilities with the main house unless otherwise approved. Detached ADUs may have separate utility connections. Unlike some areas, Richmond allows both long-term and short-term rentals without requiring the owner to live on-site. Permits are mandatory, so be sure to get all the necessary permits. Get in contact with the Richmond Planning and Development Department to ensure your ADU is compliant with all the codes and regulations.

Does Charlottesville, VA Allow ADUs?

Yes, Charlottesville permits ADUs, allowing homeowners to add secondary living spaces such as in-law suites or rental apartments. The city’s zoning code permits internal and detached accessory apartments by right in most residential districts, subject to use-specific standards. These standards address owner occupancy, building code compliance, height, maximum unit occupancy, unit entrances, unit placement, and unit size. Additionally, the city has adopted a new zoning ordinance effective February 19, 2024, which permits most lots to have a minimum of two units by right. Before proceeding with construction, it’s essential to consult the Charlottesville Planning and Zoning Department to ensure compliance with all local regulations and obtain the necessary permits.​

Does Virginia Beach, VA Allow ADUs?

Yes, Virginia Beach allows ADUs, but with a few conditions. If you’re planning a guest house, in-law suite, or backyard cottage, it must be occupied by a family member or domestic employee of the main home’s resident, meaning no short-term rentals or separate tenants are allowed. The ADU has to follow Virginia’s Uniform Statewide Building Code (USBC) for safety, structure, and fire separation, and permits are required before you can build. To avoid any confusion, check with the Virginia Beach Planning and Zoning Department to confirm that your ADU meets local zoning rules.

Does Roanoke, VA Allow ADUs?

Yes, Roanoke allows ADUs as long as the ADU adheres to the local zoning codes and regulations. You can have one ADU per lot, but it must be on the same property as a single-family home, meaning no splitting lots for separate residences. Your ADU can’t be bigger than 800 square feet or 80% of your main home’s total floor area, whichever is smaller. Also, don’t expect to run a separate utility line. it has to share meters with the main house. Permits are required, and everything must meet Virginia’s Uniform Statewide Building Code (USBC) for safety and structure. Want to make sure your ADU is up to code? Check with the Roanoke Planning and Zoning Department before getting started.

Does Norfolk, VA Allow ADUs?

Yes, Norfolk permits ADUs, but there are specific guidelines you must follow. If your property is in a single-family residential zone with a lot size of 6,000 square feet (SF-6) or larger, you can build an ADU by right, meaning no special approvals are needed beyond standard permits. However, for lots smaller than 6,000 square feet, you’ll need a Conditional Use Permit to proceed. The maximum size for an ADU is generally 500 square feet, but in areas like Ocean View and East Beach, this limit increases to 600 square feet. Before starting construction, ensure your plans comply with Norfolk’s zoning regulations and obtain the necessary permits. For detailed guidance, consult the Norfolk Planning Department to ensure your ADU project aligns with all local requirements. ​

Does Newport News, VA Allow ADUs?

Yes! Newport News now allows ADUs, offering homeowners new opportunities to expand their living spaces or create rental units. As of October 1, 2024, the city permits ADUs on single-family lots to increase affordable housing options. These units must include their own kitchen, bathroom, and living areas, ensuring they function as independent living spaces. To maintain neighborhood aesthetics, the city requires that ADUs match the architectural style of the main residence and adhere to size and height restrictions. Importantly, either the primary home or the ADU must be owner-occupied, and short-term rentals (like Airbnb) are not allowed! Before starting construction, it’s essential to consult the Newport News Zoning Department to ensure your project aligns with all local regulations and to obtain the necessary permits.​

Does Chesapeake, VA Allow ADUs?

Yes, Chesapeake permits ADUs, but the codes and rules are pretty strict. Accessory structures such as detached guest houses or in-law suites must be on the same lot as the main house and can’t be rented out separately. These structures must be at least 10 feet away from the main dwelling and 6 feet from any other detached structure. They also can’t occupy more than 30% of the required rear yard or be larger than the main house, whichever is less. All structures must comply with Virginia’s Uniform Statewide Building Code (USBC), covering safety and structural standards. Permits are mandatory, get those in order before you start building. We recommend that you contact the Chesapeake Zoning Administration to ensure your plans align with local regulations.​

Does Arlington, VA Allow ADUs?

Yes, ADUs are allowed in Arlington County, giving homeowners the option to add basement apartments, backyard cottages, or in-law suites. The county’s regulations state that ADUs can’t exceed 750 square feet or 35% of the combined home and ADU size, except basement ADUs, which have no size limit. Detached ADUs must be at least 5 feet from side property lines and 10 feet from the rear, with a maximum height of 1.5 stories or 25 feet. The property owner must live in either the main home or the ADU, but no additional parking is required. Permits are mandatory as well, so it’s important you acquire those. The best next step before starting construction would be contacting the Arlington County Zoning Office to ensure your project meets all local regulations.

Does Hampton, VA Allow ADUs?

Yes, Hampton also is actively developing regulations to permit Accessory Dwelling Units (ADUs), aiming to expand housing options within existing neighborhoods. An ADU is a secondary housing unit on a single-family residential lot, which can be either detached, such as a converted garage or standalone structure, or attached, like a basement or addition within the primary dwelling. These units must include living and sleeping spaces, a full bathroom, and a complete kitchen. The city has outlined a timeline to establish and adopt an ADU ordinance by the end of 2025. For the most current information and to stay updated on these regulations, consult the City of Hampton’s official website or contact their zoning department directly. 

Does Alexandria, VA Allow ADUs?

Yes, ADUs are allowed in Alexandria, giving homeowners the option to create basement apartments, backyard cottages, or garage conversions under certain guidelines. The city’s ADU policy, approved in 2021, limits ADUs to 1,000 square feet or 35% of the total floor area, whichever is smaller. The homeowner must live on-site, and no additional parking is required. ADUs can’t be rented short-term for more than 120 days per year, keeping them primarily for long-term housing. Permits are mandatory recruitment as well, so be sure to have those ready before construction. The best course of action would be to contact the Alexandria Department of Planning and Zoning to ensure your project meets city regulations.

What Counties in VA Do Not Allow ADUs?

Good news: ADUs are allowed everywhere in Virginia, in all counties! There’s no statewide ban, but each county and city has its own set of rules. Some places make it easy to add a backyard cottage or in-law suite, while others have stricter zoning laws, size limits, or owner-occupancy requirements. Not all counties, cities, or towns follow the same code and regulations, so before you start planning, check with your local zoning department to see what’s allowed on your property. 

General Notes To Keep In Mind 

Building Codes: All ADUs in Virginia must follow the Virginia Uniform Statewide Building Code (USBC). This means your ADU must meet specific requirements for size, ceiling height, room dimensions, fire safety, and structural integrity to ensure it’s safe and livable.

Zoning: Every county and city in Virginia has its own zoning rules for ADUs. Some residential zones freely allow ADUs, while others may have restrictions on size, placement, or who can live there. In some cases, you may need a special permit to build one. Checking with your local planning and zoning office is the best way to know what’s allowed on your property.

Permits and Inspections: To legally live in your ADU, you’ll need a certificate of occupancy, which means your unit must pass inspections and meet all permit requirements. Before starting construction, make sure to obtain the necessary building permits and follow the local approval process.

ADU Regulations In VA

FAQs

Can I live In an ADU In VA?

Yes, you can live in an ADU (Accessory Dwelling Unit) in Virginia, but it depends on your local zoning regulations. Many cities and counties in Virginia allow ADUs to be used as full-time residences, though some places restrict who can live in them—such as limiting occupancy to family members or requiring the property owner to live in either the main home or the ADU. These units must meet building codes for residential use, including having a separate kitchen, bathroom, and sleeping area. Before moving in, it’s important to check with your local planning or zoning department to confirm what’s allowed in your area.

How Much Does it Cost to Build an ADU in VA?

The cost of building an ADU in Virginia will vary depending on various factors. A low-cost option, such as converting a basement or garage, typically runs between $60,000 and $150,000. A mid-range ADU, like an attached unit or one built above a garage, falls between $100,000 and $225,000, depending on materials and design complexity. If you’re going for a high-end, custom-built detached ADU with premium finishes, expect to pay anywhere from $110,000 to $285,000 or more. Prices can vary based on location, labor costs, and zoning requirements, so it’s always best to get local estimates before starting your project.

What is the maximum size allowed for an ADU?

The maximum size allowed for ADUs in Virginia depends on the local zoning regulations. Some areas may allow ADU sizes that would be considered too big in other areas. For example:​ 

• Arlington County: ADUs cannot exceed 35% of the combined floor area of the main dwelling and the ADU, up to a maximum of 750 square feet. However, ADUs located entirely within a basement have no specific size limit. ​

• Fairfax County: An ADU, referred to as an “Accessory Living Unit,” is limited to 800 square feet or 40% of the principal dwelling’s gross floor area, whichever is less. Larger sizes may be permitted through a special permit process. ​

Can I build a guest house on my property in Virginia?

Yes, you can build a guest house on your property in Virginia, but the rules vary by county and city. Some areas, like Page County, allow guest houses as accessory structures in specific zoning districts, but only one guest house is permitted per lot, and it can’t be sold separately from the main home. In Leesburg, a guest house must be 900 square feet or less or no more than 60% of the main home’s footprint. Regulations differ across Virginia, with some localities imposing size and usage restrictions, so before moving forward, check with your local planning and zoning office to ensure compliance.

Do I need a permit to build an ADU in Virginia?

Yes, constructing an ADU typically requires obtaining a residential building permit. The best option is to get in contact with your local building department to ensure compliance with all necessary regulations and codes.

Are there occupancy restrictions for ADUs?

Occupancy regulations can vary. In New Kent County, for instance, all occupants of an accessory dwelling unit must be related by blood, marriage, or adoption to the occupants of the primary residence.

What are the setback requirements for ADUs?

Setback requirements, which dictate how far a structure must be from property lines, vary by locality. For example, in Caroline County, accessory structures must be at least 5 feet from rear and side lot lines and 10 feet from the principal structure.

Is There A Minimum Size My ADU Must Be In Virginia?

Minimum size requirments for ADUs in Virginia are decided on a local level. For instance, some areas may have strict minimum size requirements, while others might not specify a minimum but focus on maximum size limitations. To determine the exact minimum size required for an ADU in your area, get in contact with your local planning and zoning department to review the specific regulations outlined in your locality’s zoning ordinance.

Are ADUs A Good Investment?

Yes, ADUs can be a smart investment! They generate rental income, increase property value, and offer flexible living space for families or a home office. In high-demand areas, an ADU can boost resale value and help offset housing costs. Success depends on location, construction costs, and rental demand, so research zoning laws and market trends before committing.