Everything homeowners need to know about building an accessory dwelling unit in Charlottesville - size limits, setbacks, permits, and the sweeping 2023 zoning rewrite that made accessory apartments a by-right use citywide.
Last verified: September 2026
8/10 · Very ADU-friendly
900 sq ft*
Max ADU size
25 ft
Max height
Required
Owner-occupancy
By-right
Permit type
This page summarizes the accessory apartment standards in Charlottesville's Development Code (Zoning Ordinance), adopted December 18, 2023 and effective February 19, 2024, for general reference - it is not legal advice. Regulations change and this ordinance has an unusual legal history (see the timeline below); always confirm current requirements with Charlottesville Neighborhood Development Services (NDS) before designing or applying for permits. See sources below.
Zoning & size requirements
What you're allowed to build
ADU type
Max size
Max height
Notes
Detached / external accessory apartment (new build or garage conversion)
40% of the primary dwelling's gross floor area or 900 sq ft, whichever is smaller
25 ft
Setback from property lines is 5 ft or 10 ft depending on the unit's height
Sized within the primary structure and its additions - no separate detached-style cap
Same as primary structure
Common approach for basement conversions and additions above an attached garage
Allowed zoning districts
Accessory apartments are a by-right use in most residential districts citywide, a direct result of the 2023 "Cville Plans Together" rewrite that eliminated single-family-only zoning across Charlottesville. Confirm your parcel's district using the city's GIS Viewer or with NDS.
Additional standards
Setbacks, parking & other rules
Setbacks
Detached units must sit 5 ft or 10 ft from side and rear property lines, depending on the unit's height
Parking
None required. The 2024 zoning ordinance eliminated citywide off-street parking minimums, including for accessory apartments
Units per lot
One accessory apartment permitted in addition to the primary dwelling on most lots
Owner-occupancy
Required - the property owner must occupy either the primary dwelling or the accessory apartment
Building code
Must meet the 2021 Virginia Residential Code (part of the Uniform Statewide Building Code), effective statewide January 18, 2024
Short-term rental (homestay)
A separate Accessory Use Permit, fire/building inspection, business license, and transient occupancy tax registration are required to use an accessory apartment as a short-term homestay rental
Ordinance history
How Charlottesville's ADU rules got here
2019Cville Plans Together launches. In October, the city contracted with Rhodeside & Harwell to jointly rewrite the Comprehensive Plan and the Zoning Ordinance, with easing housing rules as a core goal.
2021New Comprehensive Plan adopted. City Council adopted an updated Comprehensive Plan in November, setting the housing-supply framework the zoning rewrite would later implement.
2023New zoning ordinance adopted. On December 18, City Council voted to adopt a sweeping rewrite that ended single-family-only zoning citywide, made accessory apartments by-right in most residential districts, and eliminated off-street parking minimums.
2024Ordinance takes effect. The new Development Code became effective February 19, giving Charlottesville some of the most permissive by-right ADU rules in Virginia.
2025Legal challenge. A lawsuit from nine residents (White v. City of Charlottesville) argued the underlying comprehensive plan process was flawed. A procedural error briefly led a judge to void the zoning code that summer before it was reinstated in August pending trial; City Council voted in October to settle the case.
2026First annual amendments, and a statewide law on the way. In February, Council adopted its first round of annual zoning text amendments refining the 2023 code. In April, Governor Spanberger signed Virginia SB 531, requiring every locality to permit ADUs by-right in single-family districts and capping permit fees at $500 - though it doesn't take effect until July 1, 2027.
Worth knowing: because the 2023 zoning code was briefly voided and then reinstated during litigation, it's worth double-checking with NDS that the specific provision you're relying on is currently in force before you commit to significant design costs.
Permit process
How Charlottesville ADU permitting works
1
Confirm zoning eligibility
Use the city's GIS Viewer or contact Neighborhood Development Services (NDS) to confirm your parcel's zoning district and by-right eligibility before designing.
2
Prepare your plan set
You'll need a site plan, floor plans and elevations for the accessory apartment, and floor plans of the existing house to verify the size-limit calculation for detached units.
3
Submit your zoning application
File with NDS. By-right accessory apartments generally don't require Planning Commission review, unlike the special use permit process this replaced.
4
Plan review
NDS reviews your submission for zoning and building code compliance and will issue a comment letter if corrections are needed.
5
Building permit & inspections
Once zoning is cleared, pull your building permit, begin construction, and schedule the standard framing, plumbing, electrical, and final inspections.
6
Homestay permit (if renting short-term)
If you plan to rent the unit short-term, apply for a separate Accessory Use Permit, pass a fire/building inspection, and register for a business license and transient occupancy tax.
NDS is located at 610 East Main Street and can be reached at (434) 970-3182. Fees and review timelines vary by project scope - confirm current figures directly with NDS. Note that Virginia's new statewide $500 permit-fee cap (SB 531) doesn't apply until July 1, 2027.
Budgeting
What it costs to build an ADU in Charlottesville
Garage conversion
Roughly $60,000-$160,000, the least expensive path since the shell already exists
Basement conversion
Roughly $90,000-$200,000, depending on existing ceiling height, egress, and utility access
New detached ADU
Roughly $130,000-$290,000 for a code-compliant, fully insulated freestanding unit
Zoning & building permit fees
Vary by project scope; confirm the current fee schedule with NDS
These are general ranges from local contractor estimates and regional reporting, not quotes - actual cost depends heavily on lot conditions, finishes, and whether utilities need to be extended. Because Charlottesville's ADU rules changed so recently, get quotes from contractors who are already familiar with the current by-right process rather than the older special-use-permit approach.
Before you apply
Tips for a smooth approval
Confirm your zoning district and by-right status before you design. A quick GIS Viewer check or call to NDS avoids redesigning a project that doesn't fit your lot.
Plan around owner-occupancy from day one. Charlottesville still requires you to live in the primary home or the accessory apartment, unlike some peer cities that have dropped this rule entirely.
Take advantage of the parking reform, but plan for the street realities. No off-street space is required, but check what on-street parking actually looks like on your block before finalizing your layout.
Verify the code's current status with NDS before spending on design. Given the ordinance's legal back-and-forth in 2025, a quick confirmation call is cheap insurance against a costly redesign.
Keep an eye on the 2027 statewide changes. Virginia's SB 531 phases in July 1, 2027 with a $500 permit-fee cap and tighter setback limits statewide - worth knowing if your project timeline stretches that far.
FAQ
Common questions
Do I need to live on the property to build an ADU in Charlottesville?
Yes. Charlottesville requires the property owner to occupy either the primary dwelling or the accessory apartment. This requirement stayed in place through the 2023 zoning rewrite even as most other restrictions were eased.
What's the maximum size for a detached accessory apartment?
40% of the primary dwelling's gross floor area or 900 sq ft, whichever is smaller, with a 25 ft height limit and a 5 ft or 10 ft setback from property lines depending on the unit's height.
Do I need off-street parking for an ADU?
No. The zoning ordinance that took effect in February 2024 eliminated off-street parking minimums citywide, including for accessory apartments.
Is the 2023 zoning ordinance still legally valid?
Yes, as of this writing. A lawsuit challenged the ordinance's underlying comprehensive plan process, and a procedural error briefly led a judge to void the code in mid-2025 before it was reinstated that August. City Council voted in October 2025 to settle the case. Given that history, confirm current status with NDS before committing to a design.
How many ADUs can I build on one lot?
One accessory apartment is permitted in addition to the primary dwelling on most lots.
What was "Cville Plans Together"?
It's the name of the joint Comprehensive Plan and Zoning Ordinance rewrite process the city launched in 2019, which produced the new Comprehensive Plan (2021) and the new zoning code (adopted December 2023, effective February 2024) that ended single-family-only zoning and eased ADU rules citywide.
Can I rent my accessory apartment out on Airbnb or a short-term rental platform?
Only with a separate Accessory Use Permit for a "homestay," plus a fire/building inspection, a business license, and transient occupancy tax registration. It's a distinct process from the standard accessory apartment permit.
How much does an ADU cost to build in Charlottesville?
Garage conversions tend to run roughly $60,000-$160,000, basement conversions $90,000-$200,000, and new detached units $130,000-$290,000, based on local contractor estimates and regional reporting - not counting permit fees, which vary by project scope.
Will Virginia's new statewide ADU law change anything in Charlottesville?
Not immediately. Governor Spanberger signed SB 531 in April 2026, requiring every Virginia locality to permit ADUs by-right in single-family districts and capping permit fees at $500, but it doesn't take effect until July 1, 2027. Charlottesville's local ordinance already meets or exceeds most of what the state law will require.
