ADU Pass
Fredericksburg
No County portion
Also in: Caroline County · Fredericksburg city · Spotsylvania County · Stafford County
ADU Pass helps homeowners in Fredericksburg, No County, Virginia navigate the permit paperwork for building an accessory dwelling unit. This area covers 3 ZIP codes.
Map
ADU details
ADU legality: allowed-with-restrictions
Fredericksburg permits ONLY internal/attached ADUs (basement, second-floor, attached addition). Detached backyard cottages are PROHIBITED. The city's pre-2026 ordinance shields it from SB531's broader statewide requirement effective July 2027. STR (short-term rental) of ADUs subject to separate transient lodging registration with city.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 250 | $1,850 | $87,500 | $89,350 |
| 600 | 600 | $2,150 | $252,000 | $254,150 |
| midpoint | 525 | $2,050 | $220,500 | $222,550 |
| maximum | 800 | $2,350 | $336,000 | $338,350 |
Fee breakdown (as of 2026-05)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental of permitted internal ADU is allowed.
- Short-term rental: with-restrictions Fredericksburg permits STRs subject to city transient lodging registration; STR in ADUs allowed if owner occupies primary or ADU.
- Office rental: no Office rental to third parties not permitted in residential zones.
- Home office: yes Home occupation permitted under UDO with restrictions on signage and customer traffic.
- Studio / workshop: yes Personal artist or musician studio is a permitted accessory use.
- Agriculture: no Fredericksburg is fully urbanized; no agricultural zones.
- Relative support: yes Note: Pre-SB531 Fredericksburg ADU ordinance permits family or non-family occupancy without family-relation requirement; this aligns with SB531's prohibition of family-relation rules.
Contacts
Utilities
- Water: Fredericksburg Public Works (Motts Run Reservoir / Rappahannock River source) · 30d connect · $5,500
- Sewer: Fredericksburg Public Works (FMC wastewater plant) · 35d connect · $6,800
- Electric: Dominion Energy Virginia · 30d connect · $2,000
- Gas: Columbia Gas of Virginia · 45d connect · $2,500
Property values & taxes
Construction timeline
Realistic total: best 6mo · typical 10mo · worst 15mo
Modular pathway inspectors are occasional with modular
Interior ADUs (the only currently permitted type) use site-built construction; modular not directly applicable. I-95 corridor provides good wide-load access if rules change.
Financing
Insurance impact
HOA prevalence & preemption
Fredericksburg has mixed older historic housing and newer subdivisions on city periphery; HOA prevalence higher in newer subdivisions. Virginia POAA does not preempt HOA ADU bans.
Regulatory overlays (2)
- historic-district
Fredericksburg's Historic District (40 blocks of downtown, on National Register) requires Architectural Review Board approval for exterior changes; covers a substantial portion of single-family parcels suitable for ADU conversion. - flood-zone
Rappahannock River-adjacent parcels (Sophia Street, Caroline Street downtown) fall within FEMA Zone AE; basement-conversion ADUs in these areas require flood-resistant construction per ICC 500.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
- Amendment
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: City of Fredericksburg Unified Development Ordinance — Accessory Dwelling Units (Ordinance 23-15), adopted 2023-08-08, last amended 2023-08-08
- 2023-07-01 — Fredericksburg Planning Commission amends draft ADU ordinance (city-ordinance)
Planning Commission revised the original 2023 draft ADU ordinance, ultimately voting to narrow it to internal/attached units only before sending to Council.
Effect: Set the restrictive frame that became Ordinance 23-15. - 2023-08-08 — Fredericksburg City Council adopts Ordinance 23-15 (Internal ADU only) (city-ordinance)
After 2023 first-read failed in earlier form, Council passed a modified ADU ordinance permitting ADUs only inside or attached to primary dwellings. Detached units explicitly prohibited.
Effect: Established current Fredericksburg ADU framework that exempts the city from SB531's July 2027 statewide rule. - 2026-04-14 — Virginia SB531 signed by Governor Spanberger (state-bill)
Statewide ADU mandate signed into law; effective July 1, 2027. Requires localities without pre-2026 ADU ordinances to permit ADUs by-right in single-family zones with permit fee capped at $500.
Effect: Does NOT change Fredericksburg's internal-only rule because the city's August 2023 ordinance pre-dates the January 1, 2026 carve-out cutoff.
Known issues (2)
- policy-review — Detached backyard cottages will continue to be prohibited even after SB531 takes effect; homeowners seeking detached ADUs must consider Spotsylvania County or Stafford County addresses instead.
- other — Adds 2-3 months to project timeline and 5-15 percent to construction cost for historic-district properties.
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
- 22402
- 22403
- 22404
Post Office
- 16 Lichfield Blvd, 22406
- 300 Chatham Heights Rd, 22405
- 3102 Plank Rd Ste 420, 22407
- 600 Princess Anne St, 22401