ADU Pass
Woodbridge
No County portion
Also in: Prince William County · Stafford County
ADU Pass helps homeowners in Woodbridge, No County, Virginia navigate the permit paperwork for building an accessory dwelling unit. This area covers 2 ZIP codes.
Map
ADU details
ADU legality: prohibited
Under Prince William County's current Section 32-300.03, accessory structures may not be used as a dwelling in agricultural or residential districts. This is the strongest prohibition pattern in the assigned list. SB531 (effective 2027-07-01) will preempt this prohibition for ADUs in single-family residential zones, allowing by-right ADUs with a $500 fee cap; PWC may attempt to qualify for the pre-2026-01-01 ordinance grandfather but its existing ordinance does not authorize ADUs, so the grandfather likely will not apply.
Cost scenarios
Permitting process
Viability (permitted uses)
- Long-term rental: no Long-term rental of an ADU requires the unit to be authorized; currently prohibited under Section 32-300.03. Will change after SB531 effective 2027-07-01.
- Short-term rental: no Under current PWC zoning, no second dwelling is authorized on a residential parcel; STR from an ADU is not a current option. Existing-residence STR is separately regulated by PWC.
- Office rental: no Commercial office use of an accessory structure on a residential parcel is not permitted without rezoning.
- Home office: with-restrictions Home-occupation use within the primary dwelling is permitted in residential districts subject to PWC's standard home-occupation conditions.
- Studio / workshop: with-restrictions Personal-use studio/workshop within an accessory structure (not used as a dwelling) is permitted as an accessory structure.
- Agriculture: with-restrictions Limited agricultural-tenant-house pathway exists in agricultural districts; see PWC zoning form for tenant houses accessory to agricultural use. Not applicable to most Woodbridge parcels which are zoned residential.
- Relative support: no Even housing for relatives is prohibited as a second dwelling under current Section 32-300.03. SB531 (effective 2027-07-01) will permit by-right ADUs with no family-relation requirement.
Contacts
Utilities
- Water: Prince William County Service Authority (PWCSA)
- Sewer: Prince William County Service Authority (PWCSA) - public sanitary sewer throughout most of Woodbridge
- Electric: Dominion Energy Virginia (Woodbridge is in Dominion's Northern Virginia service territory)
- Gas: Washington Gas (natural gas service in Northern Virginia)
Property values & taxes
Construction timeline
Modular pathway Virginia Industrialized Building Safety Law (IBSL) / Industrialized Building Unit (IBU) program · inspectors are experienced with modular
Woodbridge sits along the I-95 / US 1 corridor with good highway access; modular delivery into established subdivisions may face HOA-managed road or culdesac constraints.
HOA prevalence & preemption
Virginia has no statewide preemption of HOA ADU bans. Woodbridge has very high HOA density due to its postwar suburban-development pattern; many subdivisions have strict CC&R restrictions on detached structures. Even after SB531, HOA covenants may continue to bar ADUs.
Regulatory overlays (1)
- flood-zone
Woodbridge borders the Occoquan River and Potomac River tidal estuary. Parcels along Belmont Bay and the Occoquan River shoreline may be in FEMA AE or VE flood zones; confirm parcel-specific flood-zone status via FEMA flood-map service.
Technical envelope (climate & building code)
Climate & energy code
Building code
Legal history (timeline)
Current ordinance: Prince William County Code Chapter 32 Zoning, Section 32-300.03 Accessory buildings and structures
- 2021-07-13 — PWC Board of County Supervisors initiates AfDU Ordinance and code amendment process (local-publication)
AfDU (Affordable Dwelling Unit) is a county program for set-aside affordable housing within larger developments, not a backyard ADU framework.
Effect: Demonstrates PWC's recent housing-policy attention; does not authorize backyard ADUs. - 2026-04-14 — Virginia SB531 (2026) signed by Governor Spanberger - statewide by-right ADU mandate (state-law)
Requires localities to permit ADUs in single-family residential zoning districts; caps fees at $500; prohibits more-restrictive ADU setbacks than primary-dwelling setbacks; eliminates family-relation occupancy rules.
Effect: Will override PWC's Section 32-300.03 prohibition on accessory dwelling uses in single-family residential zones once effective (2027-07-01).
Known issues (2)
- policy-review — SB531 (effective 2027-07-01) will preempt PWC's Section 32-300.03 prohibition on accessory-dwelling uses in single-family residential zones. PWC's existing ordinance does not authorize ADUs, so the bill's pre-2026-01-01 ordinance grandfather is unlikely to apply. (source)
- moratorium — Effective moratorium on ADUs in residential and agricultural districts under Section 32-300.03 until SB531 takes effect 2027-07-01. (source)
County: no attribution (synthetic bucket)
No county
This city sits in the state's "no county" bucket — its ADU rules derive directly from state law and city ordinance without a county intermediary. No county-level sections apply.
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
- 22194
- 22195
Post Office
- 1810 Reddy Dr, 22191
- 3360 Post Office Rd, 22193
Locale Names
- Woodbridge Va Sdc