ADU Pass
Mathews
No County portion
Also in: Mathews County
ADU Pass helps homeowners in Mathews, 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
ADUs in Mathews village require navigating Mathews County's accessory-structure framework, typically with a Conditional Use Permit for detached units. Septic capacity is a critical constraint on this Chesapeake Bay peninsula.
Cost scenarios
Fee breakdown (as of 2025-07)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental of a permitted ADU is allowed in Mathews County; rural rental market is thin year-round.
- Short-term rental: with-restrictions Mathews County permits STRs subject to zoning and county rules; waterfront and historic-village locations command premium summer rates from boaters and Chesapeake Bay tourists.
- Office rental: no Office rental to third parties not permitted in residential zones.
- Home office: yes Home occupations permitted under Mathews County zoning code subject to standard restrictions.
- Studio / workshop: yes Personal artist/workshop studio is a permitted accessory use; popular use given Mathews' watermen and maritime arts culture.
- Agriculture: with-restrictions Mathews County permits agricultural and aquacultural uses; watermen and oystering-related accessory structures are routine.
- Relative support: yes Family-member housing in accessory structures is a traditional Mathews County use; conditional use permit may be required for detached units.
Contacts
Utilities
- Water: Mathews village: limited public water; most properties on private well · 60d connect · $9,500
- Sewer: Mathews village limited public sewer at courthouse complex; most parcels on private septic via VDH Three Rivers District · 75d connect · $22,000
- Electric: Dominion Energy Virginia · 30d connect · $2,400
- Gas: Propane (no natural-gas distribution in Mathews County) · 14d connect · $1,800
Property values & taxes
Construction timeline
Realistic total: best 9mo · typical 14mo · worst 22mo
Modular pathway inspectors are occasional with modular
Mathews County roads are rural; modular delivery feasible but bridge weight limits on some peninsula routes may restrict module size.
Financing
Insurance impact
HOA prevalence & preemption
Mathews County is overwhelmingly rural and waterfront residential without HOA structure. Some platted waterfront subdivisions (Gwynn's Island, etc.) carry HOA covenants. Virginia POAA does not preempt HOA ADU bans.
Regulatory overlays (3)
- flood-zone
Mathews County is heavily exposed to coastal flooding from Chesapeake Bay, Mobjack Bay, and tidal creeks. Many waterfront parcels are in FEMA AE flood zones; finished floor elevation requirements add cost and engineering complexity. Chesapeake Bay Preservation Act Resource Protection Area (RPA) buffers also apply within 100 feet of tidal water. - wetland-overlay
Mathews County has a dedicated Wetlands Board (the same department administers Planning, Zoning & Wetlands). Wetland permits required for impacts to tidal and nontidal wetlands; ADUs near shoreline may require Wetland Board review. - historic-district
Mathews Courthouse Historic District (National Register) covers the village core; design review may apply to ADUs in the district.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
- Amendment
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Mathews County Zoning Code Article 6 (Residential-1 District) and Supplemental District Regulations, adopted 1992-01-01, last amended 2023-01-01
- 2020-01-01 — Mathews County zoning code (eCode360 published) covers accessory structures (county-ordinance)
Mathews County zoning ordinance available on eCode360; Article 6 Residential-1 District and supplemental district regulations.
Effect: Established framework for accessory structures including potential ADU pathway via conditional use permit. - 2026-04-14 — Virginia SB 531 signed: statewide by-right ADUs effective July 1, 2027 (state-law)
Governor Spanberger signed SB 531 mandating localities permit ADUs in single-family zoning as a permitted accessory use, capping permit fees at $500.
Effect: Mathews County does not have a dedicated ADU ordinance; the county likely does NOT qualify for the Jan 1, 2026 grandfathering exemption and will need to adopt by-right ADU rules by July 1, 2027.
Known issues (3)
- other — Septic feasibility may determine whether an ADU is buildable on a given Mathews parcel.
- other — Waterfront ADU planning must address flood-elevation construction (added cost) and RPA buffers (siting restrictions).
- policy-review — Adds 60-120 days and additional fees relative to attached/interior ADUs.
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
- 23125
Post Office
- 161 Main St, 23109