ADU Pass
Hartwood
ADU Pass helps homeowners in Hartwood, No County, Virginia navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
Map
ADU details
ADU legality: allowed-with-restrictions
Stafford's 25-percent-of-principal cap is restrictive: a 1500 sqft Hartwood house caps the ADU at 375 sqft (small studio). Larger rural Hartwood homes (~3000 sqft) cap at 750 sqft, more workable. SB531's July 2027 default would override the 25-percent cap only if Stafford lacks a qualifying pre-2026 ADU ordinance.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 200 | $950 | $76,000 | $76,950 |
| 600 | 600 | $1,450 | $228,000 | $229,450 |
| midpoint | 600 | $1,450 | $228,000 | $229,450 |
| maximum | 750 | $1,750 | $285,000 | $286,750 |
Fee breakdown (as of 2026-05)
Permitting process
Viability (permitted uses)
- Long-term rental: with-restrictions Long-term rental allowed but ADU size capped at 25 percent of principal limits market viability for larger units.
- Short-term rental: with-restrictions Stafford permits STRs subject to county zoning and transient occupancy tax; rural Hartwood sees modest STR demand for Civil War battlefield tourism (Manassas, Fredericksburg) and DC weekend visitors.
- Office rental: no Detached office rental not permitted in residential or A-1/A-2 districts without rezoning.
- Home office: yes Home occupation permitted under Stafford zoning.
- Studio / workshop: yes Personal studio is a permitted accessory use.
- Agriculture: yes Hartwood has significant A-1 Agricultural zoning; farm-related accessory structures by-right.
- Relative support: with-restrictions Family-member occupancy in 25-percent-capped ADU permitted via standard accessory dwelling affidavit.
Contacts
Utilities
- Water: Private well (most Hartwood parcels); some closer to US-17 served by Stafford County Utilities · 35d connect · $7,500
- Sewer: Private septic (most Hartwood parcels); Stafford Public Works for parcels near US-17 sewer mains · 50d connect · $16,000
- Electric: Dominion Energy Virginia (most parcels); some served by Rappahannock Electric Cooperative · 30d connect · $2,400
- Gas: Propane delivered; no natural gas service in most of Hartwood · 14d connect · $1,900
Property values & taxes
Construction timeline
Realistic total: best 9mo · typical 13mo · worst 19mo
Modular pathway inspectors are occasional with modular
US-17 provides adequate state highway access. Rural Hartwood side roads may constrain wide-load deliveries.
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
Hartwood is largely rural A-1/A-2 parcels with minimal HOA presence; a few newer subdivisions exist with HOAs.
Regulatory overlays (1)
- wetland-overlay
Virginia CBPA Resource Protection Area buffers apply to Hartwood parcels along tidal waters and perennial streams (Aquia Run tributaries, Potomac Run). Stafford County is a Tidewater CBPA locality.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Stafford County Code Chapter 28 Zoning Ordinance, adopted 2016-05-03, last amended 2024-01-01
- 1989-01-01 — Virginia Chesapeake Bay Preservation Act (CBPA) (state-law)
Virginia CBPA imposes Resource Protection Area buffers on tidal waters and certain perennial streams. Stafford County is a CBPA locality; some Hartwood parcels along Aquia Run or Potomac Run tributaries are subject to RPA/RMA review.
Effect: Adds 30-60 day Wetlands review for Hartwood waterfront parcels. - 2016-05-03 — Stafford County Zoning Ordinance update (Chapter 28) (local-ordinance)
Stafford's current Chapter 28 Zoning Ordinance includes accessory dwelling provisions with the 25-percent-of-principal cap.
Effect: Codifies the restrictive 25 percent floor area limit applicable to Hartwood ADUs. - 2026-04-13 — Virginia SB531 signed by Governor Spanberger (state-law)
Statewide ADU by-right mandate; effective July 1, 2027. Caps permit fees at $500; prohibits stricter ADU setbacks than primary dwelling.
Effect: Stafford's pre-2026 ordinance likely qualifies for exemption; SB531 effect on Hartwood may be muted.
Known issues (2)
- policy-review — Limits ADU utility for owners of smaller primary dwellings; larger rural Hartwood homes have more flexibility.
- other — May require new drainfield or septic upgrade adding $10K-$30K.
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 Code
- 22471
Post Office
- 6 Hartwood Church Rd, 22471