ADU Pass
Roanoke
Roanoke city portion
Also in: No County · Roanoke County
ADU Pass helps homeowners in Roanoke, Roanoke city, Virginia navigate the permit paperwork for building an accessory dwelling unit. This area covers 7 ZIP codes.
ADU details
ADU legality: allowed
Roanoke's 2023 zoning amendments already make accessory apartments by-right in the principal residential districts. SB531's 2027-07-01 effective date will further harmonize but Roanoke is already past the SB531 floor for most parameters. Specific size and parking caps in the City code may need conforming amendments to match SB531's caps; Roanoke's pre-existing ordinance is largely grandfathered.
Cost scenarios
Permitting process
Viability (permitted uses)
- Long-term rental: yes Roanoke's by-right accessory apartment provisions support long-term rental in single-family and multifamily residential districts.
- Short-term rental: with-restrictions City of Roanoke regulates short-term rentals under a separate STR ordinance; STR registration and transient occupancy tax apply. Demand exists along the Roanoke River greenway, Mill Mountain, and downtown.
- Office rental: unclear Office rental of an accessory apartment is not the canonical use; rezoning or specific accessory-use review typically required.
- Home office: with-restrictions Home occupations permitted under City code with standard customer-traffic and signage limits.
- Studio / workshop: yes Personal studio use is a normal accessory use in residential districts.
- Agriculture: with-restrictions Rural Agricultural (RA) parcels in Roanoke City accommodate agricultural accessory uses with district-specific limits; urban residential districts do not.
- Relative support: yes Accessory apartments are explicitly designed for housing family members; SB531-aligned use case.
Contacts
Utilities
- Water: Western Virginia Water Authority (public water; the Authority serves Roanoke City and Roanoke County)
- Sewer: Western Virginia Water Authority (public sanitary sewer; treatment at the Roanoke Regional Water Pollution Control Plant)
- Electric: Appalachian Power Company (AEP)
- Gas: Roanoke Gas Company (natural gas)
Property values & taxes
Construction timeline
Modular pathway Virginia Industrialized Building Safety Law (IBSL)
Roanoke is accessed via I-581 / US-220, I-81 to the north, and US-460. Modular delivery from any direction is well-supported; in-city low-clearance considerations apply to historic-district side streets only.
Insurance impact
Standard urban-residential premium; flood insurance required where parcel is in SFHA along the Roanoke River. Mill Mountain ridge parcels have elevation-driven access considerations but no wildfire-zone designation.
HOA prevalence & preemption
Older Roanoke neighborhoods (Wasena, Grandin, Raleigh Court, Old Southwest) have no HOA. Newer suburban-pattern subdivisions on the southwest and southeast city fringes may have HOAs with architectural-review covenants.
Regulatory overlays (2)
- historic-district
Roanoke maintains multiple H-1 and H-2 historic-district overlays. Parcels within an overlay require Certificate of Appropriateness from the Architectural Review Board (Old Southwest, Downtown) or the Historic Preservation Commission. ADU additions visible from the public right-of-way undergo design review. - flood-zone
Significant portions of southeast Roanoke and parcels along the Roanoke River and Tinker Creek are in FEMA AE Special Flood Hazard Areas with finished-floor elevation requirements. The City maintains a floodplain administrator within Planning, Building, and Development.
Technical envelope (climate & building code)
Climate & energy code
Building code
Legal history (timeline)
Current ordinance: City of Roanoke Zoning Ordinance (Chapter 36.2, Code of the City of Roanoke), last amended 2023-04-17
- 2023-04-17 — City of Roanoke Zoning Ordinance Amendments - Accessory Apartments (city-ordinance)
City Council adopted zoning amendments expanding accessory-apartment by-right allowance in residential districts and simplifying owner-occupancy and size standards.
Effect: Made accessory apartments by-right in R-5/R-7/R-12/RA and clarified pathway for detached units. - 2026-01-01 — Virginia SB531 - grandfather date (state-law)
Localities with ADU ordinances adopted before January 1, 2026 are grandfathered from SB531's by-right mandate.
Effect: Roanoke's 2023 accessory-apartment amendments are grandfathered. - 2026-04-14 — Virginia SB531 enacted (state-law)
Statewide by-right ADU mandate, $500 permit-fee cap, effective July 1, 2027.
Effect: Limited direct impact on Roanoke: city is already by-right; primary new constraint is the $500 fee cap if Roanoke's current permit fees exceed it.
Known issues (1)
- policy-review — Virginia SB531 (effective 2027-07-01) primarily affects Roanoke's permit-fee structure if current fees exceed $500. The substantive by-right allowance is already in place. (source)
City of Roanoke — county ADU rules and overlays
County ADU ordinance
Roanoke permits accessory dwelling units in residential districts under Chapter 36.2 of the City Code. The ordinance distinguishes attached vs detached ADUs and applies use-specific standards including maximum floor area (typically 750-900 sqft), height limits matched to the principal-district standards, setback requirements, and off-street parking. Owner-occupancy may be required by district. The Roanoke Valley sits in the Blue Ridge foothills; FEMA SFHA along the Roanoke River and Tinker Creek affects substantial portions of older neighborhoods (Norwich, Wasena, parts of Vinton-adjacent areas).
County regulatory overlays
Roanoke administers overlay regimes that bear on ADU projects: (1) Floodplain Management Overlay tied to FEMA Special Flood Hazard Areas along the Roanoke River, Tinker Creek, Lick Run, and Peters Creek; (2) Historic Downtown / H-1 and H-2 historic district overlays (the Wasena, Old Southwest, and Downtown core districts); (3) Mountainside development overlay on steep-slope parcels in the southwest hills and the Mill Mountain vicinity; (4) Airport overlay near Roanoke-Blacksburg Regional Airport (FAR Part 77 surfaces). Roanoke is NOT subject to the Chesapeake Bay Preservation Act (the city drains to the Roanoke River basin, not to the Chesapeake watershed).
County permitting (unincorporated parcels)
Because Roanoke is an independent city (county-equivalent), there is no separate county permitting authority. The city handles all matters that would in a typical state involve both city and county. A typical ADU permit bundle includes a Zoning Permit, a Building Permit with stamped residential plans, electrical/plumbing/mechanical trade permits, Western Virginia Water Authority connection review where applicable, and a Floodplain Development Permit on parcels in the Roanoke River or Tinker Creek SFHA. Roanoke is NOT in the Chesapeake Bay Preservation Act jurisdiction (the city drains to the New River basin / Roanoke River, not to the Chesapeake watershed).
Virginia state — ADU law and programs
State ADU law
Virginia has NOT enacted a statewide ADU preemption law. Virginia is a Dillon Rule state — localities possess only those powers expressly granted by the General Assembly — and the statutes granting zoning authority (Va. Code § 15.2-2280 et seq.) leave ADU regulation to local ordinances. ADU permission, setbacks, parking, size, and owner-occupancy rules therefore vary by county, independent city, and town. Virginia is unique in that it has 38 independent cities that function as counties (neither in nor subordinate to the surrounding county), meaning 'the county' for any given Virginia property may be an independent city rather than a true county. Several ADU preemption bills have been introduced in recent General Assembly sessions (2022 through 2025) without enactment; none have advanced past committee as of the Assembly's 2026 regular session adjournment.
State financing programs
Virginia does not operate an ADU-specific statewide loan, grant, or forgivable-loan program. Virginia Housing (formerly the Virginia Housing Development Authority, VHDA — rebranded 2020) administers general first-time-homebuyer, down-payment-assistance (DPA), mortgage-credit-certificate, and rehabilitation products that can be applied to ADU-adjacent purchases or improvements when eligibility criteria are met, but none target ADU construction as a distinct product. The Virginia Department of Housing and Community Development (DHCD) administers federal HOME and CDBG pass-through funds that local jurisdictions can direct toward ADU-adjacent rehab, but there is no state-level ADU-dedicated line item. Federally available products (FHA 203(k), Fannie Mae HomeReady and HomeStyle Renovation, Freddie Mac CHOICERenovation) remain the primary ADU financing path for Virginia homeowners.
State housing programs
Virginia does not run a state-level pre-approved-ADU-plan catalog, statewide impact-fee-waiver statute for ADUs, or streamlined-review mandate. State-level programs that touch ADU-adjacent policy are coordinated primarily through the Department of Housing and Community Development (DHCD) and Virginia Housing, and act by funding or assisting local jurisdictions rather than by preemption. Local ADU activity — Arlington County's Accessory Dwellings program (detached ADUs permitted since 2008, liberalized 2020), Alexandria's accessory-dwelling ordinance, Fairfax County's accessory-living-unit program, and Charlottesville's 2021 zoning-code changes — is authorized under the localities' Va. Code § 15.2-2280 zoning authority, not by state mandate.
- DHCD Community Development Block Grant (CDBG) Program — Federal CDBG funds administered by DHCD to eligible non-entitlement Virginia localities for community-revitalization, housing-rehab, and infrastructure projects. Not ADU-specific. Participating localities can direct CDBG funds toward housing-rehab projects where local policy supports ADUs.
- DHCD HOME Investment Partnerships Program — Federal HOME funds administered by DHCD to Virginia participating jurisdictions and non-profits for affordable-housing acquisition, rehab, and new construction. Not ADU-specific; can be directed to ADU-adjacent rehab at local discretion.
- Virginia Housing Commission — Permanent advisory commission of the General Assembly that studies housing-policy questions and recommends legislation. Has periodically studied ADU preemption and missing-middle housing without recommending statewide enactment as of 2026-04-21.
- Local ADU ordinances under Va. Code § 15.2-2280 authority — Not a state program — listed here because Virginia ADU policy is executed entirely at the locality level under the § 15.2-2280 zoning grant. A homeowner seeking to build an ADU consults the zoning ordinance of the specific county, city, or town where the parcel is located.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Codes
- 24011
- 24012
- 24013
- 24015
- 24016
- 24017
- 24022
Post Office
- 1515 Courtland Rd NE, 24012
- 1733 Grandin Rd SW, 24015
- 3018 Melrose Ave NW, 24017
- 419 Rutherford Ave NE, 24022