Cumberland County
ADU Pass helps homeowners in Cumberland County, Virginia navigate the permit paperwork for building an accessory dwelling unit. We cover 3 cities and 3 ZIP codes in this county.
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County ADU details
County ADU ordinance
Cumberland County does NOT have a standalone accessory-dwelling-unit (ADU) ordinance. Chapter 74 regulates accessory structures and accessory uses generally; Sec. 74-2 (Definitions) and the per-district use tables do not list an explicit 'accessory dwelling' or 'accessory dwelling unit' use category. The county's operative framework is one principal dwelling per lot: a second dwelling on the same parcel is not a listed by-right accessory use and typically requires either (a) subdivision of the parcel into two conforming lots, (b) a conditional use permit, or (c) placement under a farm-structure or family-member provision that Planning & Zoning treats case-by-case. Third-party ADU-marketing websites that state flat numeric caps (e.g., '800 sqft or 35% of primary') for Cumberland County appear to apply generic Virginia-template language rather than primary-source Cumberland ordinance text — the chapter's own quantitative caps are set per-district (setbacks, lot coverage, minimum lot size) rather than through an ADU-specific formula. Accessory structures independent of ADU status have concrete numeric thresholds: any accessory structure exceeding 256 square feet requires a building permit (under 256 sqft requires zoning approval only), and any accessory structure exceeding 600 square feet requires a permanent foundation. Effective 2022-02-01, conversions of sheds to habitable space are prohibited countywide because such structures do not meet Virginia Uniform Statewide Building Code minimum standards — this rule closes what had been a common de-facto ADU path of shed conversion. No statewide ADU preemption is in force in Virginia as of 2026-04-21 (per the state-adu-research file, no Virginia General Assembly ADU bill has been enacted through the 2026 regular session); Cumberland's silence on ADUs is therefore the operative rule.
County permitting (unincorporated parcels)
An accessory-dwelling or second-dwelling project in Cumberland County routes through two county departments sharing the 1 Courthouse Circle, Cumberland office. Planning & Zoning handles the zoning-permit approval, any required Conditional Use Permit (the likely path for a second dwelling given the absence of a by-right ADU category), Subdivision Application (if subdivision is chosen), or Farm Structure Affidavit (for working-farm contexts). Building Inspection handles the building permit under the 2021 Virginia Construction Code (adopted effective 2024-01-18 following the USBC 2021 cycle), enforces the Virginia Uniform Statewide Building Code (13 VAC 5-63), and issues trade permits (electrical, plumbing, mechanical). Because Cumberland is rural with limited public water and sewer, the Piedmont Health District (Virginia Department of Health local office covering Amelia, Buckingham, Charlotte, Cumberland, Lunenburg, Nottoway, and Prince Edward) issues the well-and-septic construction permit for parcels outside public-utility service areas, which must be in hand before the county will release a building permit. Applications are submitted in person at 1 Courthouse Circle or by email to permits@cumberlandcounty.virginia.gov (building) or the Planning Director's office. New-home building permit applications must be hand-delivered or mailed with all required documentation; the daily application cut-off is 4:00 p.m.
County assessor
Cumberland County real estate is assessed by the Office of the Commissioner of the Revenue (Julie A. Phillips, MCR, elected Commissioner) through a contracted third-party mass-appraisal vendor, Pearson's Appraisal Service. The most recent general reassessment was effective 2024-01-01 with notices mailed to property owners in November 2023. Historically Cumberland has conducted reassessment every four years, which is shorter than the Va. Code § 58.1-3252 six-year minimum for counties below the 50,000 population threshold. A second dwelling or accessory-dwelling addition is captured via the supplemental-assessment process under Va. Code § 58.1-3292: on receipt of the building permit and Certificate of Occupancy from Building Inspection, the Commissioner of the Revenue's office prorates the supplemental assessment from the completion date through the end of the tax year. The primary dwelling is NOT revalued off-cycle as a result of the accessory-dwelling addition; only the new improvement is added at its assessed fair-market value. Between reassessment cycles, the Commissioner of the Revenue's office handles all real-estate assessment activity (new construction, subdivisions, zoning changes) in-house.
Assessment policy: A second dwelling or accessory structure added to a Cumberland County parcel is captured as a real-estate improvement under Va. Code Title 58.1 Subtitle III Chapter 32, specifically as a supplemental assessment under § 58.1-3292. On receipt of the building permit and Certificate of Occupancy from Building Inspection, the Commissioner of the Revenue's office adds the new improvement at its assessed fair-market value on top of the existing parcel land and improvement value. The existing primary dwelling is NOT revalued off-cycle. Cumberland has no ADU-specific assessment exemption or carve-out. Standard Virginia real-estate tax-relief programs apply: elderly and disabled relief under Va. Code § 58.1-3210 (local option implemented by Cumberland), disabled-veteran exemption under § 58.1-3219.5, and the Land Use (use-value) assessment program under § 58.1-3230 et seq. for qualifying agricultural, horticultural, forest, and open-space parcels. Cumberland is a non-prorating county for personal property (vehicles), but real-estate supplemental assessments under § 58.1-3292 do prorate from the completion date through the tax year-end.
County overlays (3)
Cumberland County administers three principal overlay regimes that bear on second-dwelling and accessory-structure projects: (1) Floodplain Zoning under Chapter 74 Article XXI, substantively updated by Board of Supervisors Code Amendment CA 24-01 adopted 2024-04-09, tied to the FEMA Flood Insurance Study and Flood Insurance Rate Map for Cumberland County dated 2024-05-22; this overlay reaches the James River corridor on the southern county boundary, the Appomattox River corridor on the northern boundary, the Willis River, and their tributaries. (2) the Land Use (use-value) assessment program administered by the Commissioner of the Revenue under Va. Code § 58.1-3230, which does not restrict ADU construction but can be breached by one, removing the deferred-assessment benefit and triggering up to six years of rollback taxes. (3) conservation easements held by the Virginia Outdoors Foundation, the Virginia Department of Forestry (forestland easements), and other land trusts on a parcel-specific basis; the Cumberland State Forest (16,233 acres managed by the Virginia Department of Forestry including Bear Creek Lake State Park) is a large state-held block in the county, and private easement acreage under Va. Code § 10.1-1009 et seq. (Virginia Conservation Easement Act) and § 10.1-1700 et seq. (Open-Space Land Act) is concentrated in the rural forested and agricultural portions of the county. Cumberland has no coastal-commission jurisdiction (no tidal waters; well outside the Chesapeake Bay Preservation Act Tidewater boundary), no statewide WUI regulatory overlay (Virginia has none), no seismic-retrofit overlay (though Cumberland is on the outer edge of the Central Virginia Seismic Zone that caused 2011 damage in Louisa and Albemarle — hazard-awareness only, not a permit-constraining overlay), and no Part 150 airport-noise overlay (no commercial airport inside the county). Cumberland does NOT operate a county-administered local Architectural Review Board for historic districts — the Cumberland Courthouse Historic District (National Register) and other state/national historic listings impose no private-parcel design-review constraint absent a local overlay, which Cumberland has not adopted.
Known county issues (6)
- policy-review — Prospective ADU builders in Cumberland cannot expect a fast by-right path analogous to Fluvanna's Section 22-22-1. Pro-forma modeling must include either a $450 CUP fee plus 60-120 days of discretionary review (with conditions that may include owner-occupancy, STR limitations, or design criteria imposed by the Board of Supervisors), or a $150+ subdivision path that creates two separately taxable parcels. Plans sold as generic '800 sqft / 35% of primary' Virginia ADU designs (which third-party ADU-marketing sites attribute to Cumberland) should NOT be treated as reflecting Cumberland ordinance text — the county has no such rule, and any size cap on a CUP-approved second dwelling is set by Planning Commission and Board of Supervisors conditions on the specific permit, not by ordinance.
- policy-review — Homeowners who would have historically converted an existing shed, garage, or detached outbuilding into an ADU-style living space in Cumberland no longer have that path. A new detached second dwelling must be designed to VUSBC residential standards from the outset, with foundation, framing, egress, insulation, and trade-system compliance to the 2021 Virginia Construction Code. An existing shed over 256 sqft without a permanent foundation (the 600 sqft permanent-foundation threshold) is structurally unlikely to qualify for a retroactive occupancy permit, making demolish-and-rebuild the practical option in those cases.
- other — A second dwelling on a rural parcel in Cumberland typically requires either an expansion of the existing septic system or a new septic system and possibly a new well for the second unit, adding a VDH-administered timeline (30-90 days for new-system evaluation) and several thousand dollars in design and construction costs beyond the county's zoning and building-permit fees. Interior or attached second dwellings served by the existing primary dwelling's septic capacity may avoid the new-system VDH layer if the system has documented reserve capacity; Piedmont Health District is the gatekeeper for that determination. VDH well-septic review is the single most common rate-limiting path item for rural Cumberland residential construction.
- policy-review — The Comprehensive Plan itself does not change zoning, but future Chapter 74 amendments are likely to (a) cluster higher-density residential (including potentially ADU-style accessory uses) in the designated village centers and (b) expand by-right agritourism and farm-based commercial uses on working farms. A second dwelling proposed on a parcel inside a designated village center may encounter more-receptive discretionary review; a proposal on a rural parcel between village centers may face a preservation-oriented analysis. Owners pro-forming a 2026-2028 Cumberland ADU project should monitor Board of Supervisors agenda items for zoning-ordinance amendments implementing the Comprehensive Plan's growth framework.
- other — A second-dwelling project on a Land Use-enrolled parcel must be sized and sited so the dwelling footprint plus curtilage does not drop the parcel below program minimums (varies by Use category: agricultural, horticultural, forest, open-space). For a typical 10-acre agricultural parcel at the 5-acre program minimum, even a modest curtilage allocation can create rollback exposure that materially affects project NPV. Owners should consult the Commissioner of the Revenue (Julie A. Phillips, MCR, 804-492-4280) before finalizing a Land Use-enrolled parcel's second-dwelling plan.
- fee-schedule-pending — Pro-forma accuracy requires a direct call or email to Planning & Zoning and Building Inspection to obtain the itemized zoning-permit and building-permit fees for the specific project scope. Published online templates, including third-party ADU-industry estimators, should be treated as approximate and not relied on for Cumberland-specific budgeting. The county's low permit volume and small staff (Planning Director / Zoning Administrator Stephany Johnson; Building Official Robby Felts, CBO) mean phone and email access is typically responsive within a business day or two.
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.