ADU Pass
Suffolk city
ADU Pass helps homeowners in Suffolk city, Virginia navigate the permit paperwork for building an accessory dwelling unit. We cover 1 city and 10 ZIP codes in this county.
County ADU details
County ADU ordinance
Suffolk's Unified Development Ordinance permits accessory dwelling units in residential districts with use-specific standards. Detached ADU size caps typically run 800-1000 sqft; the UDO distinguishes guest cottages (no kitchen) from independent ADUs. Owner-occupancy is required for certain configurations. Suffolk's geographic extent includes substantial rural / agricultural land — the rural A-1 district allows family-member dwellings on parcels meeting minimum-acreage thresholds. The Great Dismal Swamp National Wildlife Refuge covers portions of southern Suffolk; the Nansemond River and its tributaries generate extensive CBPA RPA buffers.
County permitting (unincorporated parcels)
Because Suffolk is an independent city (county-equivalent created from the 1974 Nansemond County / Suffolk City consolidation), 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 Conditional Use Permit when required, a Building Permit, trade permits, an HRSD sewer-connection review in the HRSD service area, a Virginia Department of Health onsite-sewage permit on rural parcels not on public sewer (common in rural southern and western Suffolk), a Floodplain Development Permit on SFHA parcels, a CBPA review, and potentially ACOE Section 404 review on Great Dismal Swamp adjacent parcels.
County assessor
Real estate in the City of Suffolk is assessed by the City of Suffolk Real Estate Assessor — a city office, not a county office, because Suffolk is an independent city (post-1974 consolidation of Nansemond County and the former independent city of Suffolk). The office operates on an ANNUAL general-reassessment cycle (permitted under Va. Code Section 58.1-3252 for cities). ADU additions are captured through supplemental real-estate-improvement assessment under Va. Code Section 58.1-3292 on receipt of the Certificate of Occupancy.
County overlays (4)
Suffolk administers overlay regimes that bear materially on ADU projects given the city's extensive rural geography and Great Dismal Swamp adjacency: (1) Floodplain Management Overlay tied to FEMA Special Flood Hazard Areas along the Nansemond River, its tributaries, and the Great Dismal Swamp drainage; (2) Chesapeake Bay Preservation Area RPA/RMA coverage citywide (Suffolk is a designated Tidewater locality); (3) Section 404 jurisdictional wetlands across much of southern Suffolk adjacent to the Great Dismal Swamp National Wildlife Refuge; (4) Historic Downtown Suffolk overlay; (5) Driver Historic District overlay (a National Register district on the former Norfolk and Western rail line); (6) Virginia Marine Resources Commission tidal-wetlands jurisdiction on tidal Nansemond River frontage.
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.