ADU Pass
Scott County
ADU Pass helps homeowners in Scott County, Virginia navigate the permit paperwork for building an accessory dwelling unit. We cover 5 cities and 8 ZIP codes in this county.
Map
County ADU details
County ADU ordinance
Scott County does NOT have a standalone accessory-dwelling-unit (ADU) ordinance. The Scott County Zoning Ordinance regulates dwelling uses through per-district use tables and accompanying definitions; 'accessory dwelling unit' is not identified as a separate named use category in the county's publicly-listed ordinance resources, and county application materials do not publish an ADU-specific permit pathway. The operative framework is one principal dwelling per lot, with any second dwelling on an existing parcel routing through either (a) a Conditional Use Permit / Special Use Permit under the Zoning Ordinance — requires Planning Commission recommendation and Board of Supervisors approval after a Va. Code § 15.2-2204-compliant advertised public hearing, (b) subdivision of the parcel into two conforming lots under the Scott County Subdivision Ordinance followed by a standard zoning and building permit for a second principal dwelling on the new lot, or (c) a family-member / farm-labor path in agricultural contexts via the discretionary Special Use Permit route. Virginia has not enacted a statewide ADU preemption as of 2026-04-21 (per the adupass Virginia state-adu-research file: Virginia is a Dillon Rule state; the General Assembly has not passed an ADU bill through the 2026 regular session; Va. Code § 15.2-2280 et seq. leaves ADU regulation to localities). Scott County's silence on ADUs is therefore the binding local rule. Additionally, very large portions of the county — particularly the northwestern Powell Valley sector, the Clinch River corridor, and the agricultural river-valley bottoms — carry A-1 Agricultural zoning in which a single farm-family / farm-employee accessory dwelling is frequently approvable by Special Use Permit with owner-occupancy or family-member conditions attached.
County permitting (unincorporated parcels)
An accessory-dwelling or second-dwelling project on an unincorporated Scott County parcel routes through the Scott County Building & Zoning office at 190 Beech Street, Suite 102, Gate City. The same office handles the zoning-permit approval (required before any building permit can issue), any Special Use Permit (the likely path for a second dwelling given the absence of a by-right ADU category), Subdivision Plat Review (if the subdivision path is chosen), Board of Zoning Appeals variance review, building permit under the Virginia Uniform Statewide Building Code, and trade permits. Because nearly all rural Scott County parcels lack public water and sewer, the Lenowisco Health District (Virginia Department of Health local office covering Lee, Scott, and Wise counties, with a Scott County office in Gate City) issues the well-and-septic construction permit for such parcels; the VDH permit must be in hand before the county will issue the building permit. Zoning applications are submitted in person at the Building & Zoning office; the county does not operate an Accela-, Tyler-, or CivicGov-integrated online permit portal. Building-permit applications go to the same office. Payment by check, cash, or credit card at intake. Given the very small staff (typically one Building Official, one or two inspectors or combination code officials, and one Permit Technician / Zoning Administrator who may be the same person as the Building Official in smaller rural Virginia counties), direct phone consultation at (276) 386-6521 is the strongly-recommended first step.
County assessor
Scott County real estate is assessed by the Office of the Commissioner of the Revenue (elected constitutional officer) under Va. Code Title 58.1 Subtitle III Chapter 32 (Real Property Tax), with a contracted general-reassessment firm retained for periodic revaluation cycles. The office maintains county tax maps, assesses real and personal property, and prepares the real-estate and personal-property tax book; the Treasurer's office (same Administration Building) collects the tax. Scott County operates on the six-year statutory reassessment cadence set by Va. Code § 58.1-3252 for counties below 50,000 population (Scott's 21,573 population squarely satisfies this). A second dwelling or accessory-dwelling addition is captured via supplemental assessment under Va. Code § 58.1-3292 once the building permit and Certificate of Occupancy are received from the Scott County Building & Zoning office; the existing primary dwelling is NOT revalued off-cycle as a result of a second-dwelling addition. Scott County 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 as implemented by Scott County), 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 — Land Use enrollment is substantial in Scott County given the county's heavily agricultural and forested land base.
Assessment policy: A second dwelling or accessory structure added to a Scott 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 the Scott County Building & Zoning office, the Commissioner of the Revenue adds the new improvement at its assessed fair-market value on top of the existing parcel's land and improvement value, prorated from the completion date through the tax year-end. The existing primary dwelling is NOT revalued off-cycle. Scott County 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 implementation details should be confirmed with the Commissioner of the Revenue's office), 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. The rollback-tax risk under § 58.1-3237 on Land Use-enrolled parcels (up to six years of the difference between use-value and fair-market-value assessment) is a material pro-forma consideration for Scott County second-dwelling projects because the county's very large share of Land Use-enrolled acreage means many prospective ADU projects will be on enrolled parcels.
County overlays (4)
Scott County administers or is subject to four principal overlay regimes that bear on second-dwelling and accessory-structure projects: (1) Floodplain regulation within the Zoning Ordinance, tied to the FEMA Flood Insurance Rate Map for Scott County — the overlay reaches the Clinch River corridor (which bisects the county east-to-west and carries the largest mapped floodplain), the Powell River (southwestern portion), Copper Creek (central), Stony Creek (eastern), and numerous tributaries of these ridge-and-valley stream systems. Compliance with FEMA NFIP 44 CFR § 60.3, FIRM base-flood-elevation, and Virginia freeboard requirements is required for any new residential structure in the mapped floodplain. (2) The Virginia Land Use (use-value) assessment program administered by the Commissioner of the Revenue under Va. Code § 58.1-3230 et seq. — Land Use enrollment is substantial in Scott County given the heavily agricultural and forested land base, so a very large share of prospective ADU projects will be on Land Use-enrolled parcels, with rollback-tax exposure under § 58.1-3237 that can run up to six years of use-value-vs-fair-market-value assessment difference. (3) Natural Tunnel State Park adjacency — the 1,000-acre state park near Duffield protects the nationally significant limestone natural tunnel (850 feet long, 100+ feet tall) through Purchase Ridge; parcels in the immediate park vicinity have heightened scrutiny under Special Use Permit review but no county-specific design-review overlay. (4) Jefferson National Forest (Clinch Ranger District) adjacency — the southeastern and southern reaches of Scott County include and abut U.S. Forest Service lands, introducing federal-land interface considerations for parcels adjoining forest boundaries. Scott has NO coastal-commission jurisdiction (inland southwestern Virginia; no tidal waters; far outside the Chesapeake Bay Preservation Act Tidewater boundary), NO statewide WUI regulatory overlay (Virginia has none), NO seismic-retrofit overlay (well outside the Central Virginia Seismic Zone centered on Louisa County), and NO Part 150 airport-noise overlay (no commercial airport inside the county; the nearest general-aviation airport is Scott County / Virginia Highlands Airport / KVJI in Abingdon (Washington County) and Lonesome Pine Airport in Wise County). The county does not operate a county-administered local Architectural Review Board for historic districts.
Known county issues (6)
- policy-review — Prospective ADU builders in Scott County cannot expect a fast by-right path. Pro-forma modeling must include either a Special Use Permit fee plus 60-120 days of discretionary review with conditions that may include owner-occupancy, family-member-occupancy, short-term-rental limitations, or design criteria imposed by the Board of Supervisors, or a subdivision path that creates two separately taxable parcels with survey/plat/recording costs on top. Generic 'Virginia ADU' size or setback defaults quoted by third-party ADU-marketing sites should NOT be treated as reflecting Scott County ordinance text — the county publishes no such figures, and any size cap on a Special Use Permit-approved second dwelling is set by Planning Commission and Board of Supervisors conditions on the specific permit, not by ordinance. That said, the county's rural character, low permit volume, and predominantly A-1 Agricultural zoning mean Special Use Permit approvals for family-member accessory dwellings are in practice attainable on many parcels, particularly where the applicant can demonstrate an agricultural or family-support use case.
- fee-schedule-pending — Pro-forma accuracy for a Scott County second-dwelling project requires a direct call or email to the Building & Zoning office. Published online templates, including third-party ADU-industry estimators, should be treated as approximate and not relied on for Scott-specific budgeting. Typical rural southwestern Virginia county residential building-permit structures follow a per-square-foot residential fee in the 12-18 cents per square foot range plus flat fees for manufactured homes and specialty permits plus discretionary-review fees ($100-$400 range) for Special Use Permits, rezonings, and BZA variances — but these are historical genre norms, not Scott-specific figures. The county's small staff at the Building & Zoning office is typically responsive within a business day or two to a fee-scoping inquiry.
- other — A second dwelling on a rural Scott parcel typically requires either expansion of the existing septic system or a new septic and possibly a new well for the second unit, adding a VDH-administered timeline (30-90 days in a separate queue; the Scott County local office handles evaluations for Lee, Scott, and Wise so seasonal demand fluctuates significantly in the spring soil-evaluation busy season) and several thousand dollars in design and construction costs beyond the county's zoning and building-permit fees. Karst terrain and shallow bedrock can complicate or preclude conventional gravity-drain septic designs, sometimes requiring alternative (pump, drip, peat, or sand-mound) systems at two to four times the cost of a conventional system. 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; the Lenowisco Health District soil evaluator is the gatekeeper for that determination. VDH well-septic review is the single most common rate-limiting path item for rural Scott residential construction, and karst-terrain design complications are a Scott-specific factor absent in most Piedmont or Tidewater Virginia counties.
- other — A second-dwelling project on a parcel inside the corporate limits of any of the six towns is NOT governed by the county's Zoning Ordinance, county fee schedule, county Special Use Permit process, or county Planning Commission — the applicable authority is the respective town's zoning ordinance (potentially permissive, restrictive, or silent), town council, and town permit process, which may differ substantially from the county's framework. Applicants with a parcel near a town boundary should verify corporate-limit status with the respective town clerk or with the county's Building & Zoning office before scoping their project, since the applicable zoning code changes at the town line. This is a particularly live issue in Scott County because the corporate boundaries of Gate City and Weber City are interlocking with the surrounding unincorporated US-23 corridor and do not always follow intuitive landmarks — a parcel on the edge of US-23 just south of Weber City may be inside Weber City, inside Scott County unincorporated, or inside the city limits of Kingsport, Tennessee (across the Tennessee state line), each of which has entirely different regulatory regimes.
- other — Scott County applicants have no state-law right to a by-right accessory dwelling that they could assert against the county's ordinance. Contrast with California (AB 68 / AB 881 and subsequent legislation), Oregon (HB 2001 and SB 4), or Washington state (HB 1337), where statewide ADU-preemption legislation would override local zoning silence or restriction. Any future shift in Virginia — for example, enactment of a General Assembly ADU preemption bill — would materially change this analysis and should be rechecked against the adupass state-adu-research Virginia file before committing to a Scott County ADU pro forma. As of 2026-04-21, the analysis stands: Scott County's ordinance silence, combined with Virginia's Dillon Rule posture, makes the Special Use Permit path the primary practical route for a Scott County second dwelling.
- other — A Clinch River-adjacent or karst-terrain second-dwelling project must budget for the possibility of (a) septic-system design costs two to four times the cost of a conventional gravity-drain system if karst features preclude conventional design, (b) environmental-review delays if any federal permit or funding is involved (Endangered Species Act Section 7 consultation can add 60-180 days), and (c) heightened Virginia DEQ scrutiny of any land-disturbance activity within the Clinch River corridor's regulatory buffer, even where the parcel is not inside the FEMA floodway. Applicants should confirm karst-feature status with the Virginia Department of Mines, Minerals and Energy (DMME) Division of Mineral Resources karst maps, and confirm Clinch River biodiversity overlay status with the U.S. Fish and Wildlife Service Virginia Field Office before finalizing design.
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.