ADU Pass
Harrisonburg
Rockingham County portion
Also in: No County
ADU Pass helps homeowners in Harrisonburg, Rockingham County, Virginia navigate the permit paperwork for building an accessory dwelling unit. This area covers 7 ZIP codes.
Map
ADU details
ADU legality: allowed-with-restrictions
Harrisonburg ADUs require Special Use Permit today. By July 1, 2027 SB 531 will compel by-right ADU permission on every Harrisonburg single-family parcel unless the city adopts a compliant ordinance first; the in-process Zoning Update Project could land that compliant ordinance before SB 531's effective date.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 200 | $2,400 | $56,000 | $58,400 |
| 600 | 600 | $2,400 | $168,000 | $170,400 |
| midpoint | 550 | $2,400 | $154,000 | $156,400 |
| 1000 | 800 | $2,400 | $224,000 | $226,400 |
| maximum | 900 | $2,400 | $252,000 | $254,400 |
Fee breakdown (as of 2026-05)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental is the dominant Harrisonburg ADU use case. JMU off-campus student housing demand is the single strongest residential rental driver in the Shenandoah Valley; EMU and Sentara RMH Medical Center add steady professional / staff demand.
- Short-term rental: with-restrictions Harrisonburg STR demand is high during JMU parent / commencement / move-in weekends and Shenandoah Valley tourism peaks. City requires STR registration; Va. Code § 58.1-3819 transient-occupancy tax applies.
- Office rental: with-restrictions Detached office rental requires Home Occupation permit (resident-only employees) or SUP for non-resident-employee use; commercial overlay districts more permissive.
- Home office: yes Home occupation is a permitted accessory use.
- Studio / workshop: yes Personal studio is a permitted accessory use.
- Agriculture: with-restrictions In-town residential districts have limited agriculture allowance; production agriculture is concentrated on surrounding unincorporated Rockingham County A-1/A-2 parcels.
- Relative support: yes Multi-generational accessory dwelling is permitted via SUP and is a common SUP-approval pathway.
Incentives
Contacts
Utilities
- Water: Harrisonburg Department of Public Utilities (municipal water from Switzer Lake and Dry River intakes; ~17,000 connections) · 30d connect · $3,500
- Sewer: Harrisonburg Rockingham Regional Sewer Authority (HRRSA) North River Wastewater Treatment Plant in Mount Crawford · 35d connect · $4,200
- Electric: Harrisonburg Electric Commission (city-owned municipal utility serving the corporate limits; ~22,000 customers) · 18d connect · $1,750
- Gas: Columbia Gas of Virginia (natural gas distribution in most of Harrisonburg) · 28d connect · $2,200
Property values & taxes
Construction timeline
Realistic total: best 8mo · typical 13mo · worst 22mo
Modular pathway inspectors are occasional with modular
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
Virginia has no HOA-ADU preemption. Harrisonburg's pre-WWII core neighborhoods are largely covenant-free; post-1990 subdivisions on the city's south and east (Reservoir Hills, Stone Spring, Crestwood) carry HOA covenants that may restrict accessory dwellings.
Regulatory overlays (2)
- flood-zone
Harrisonburg parcels along Blacks Run (which bisects downtown) and Cooks Creek along the southern city edge are mapped in Zone AE. Recurring Blacks Run flash flooding (most recently September 2018) makes finished-floor elevation review pivotal for downtown ADU conversions. (map) - historic-district
The downtown historic district covers approximately 25 city blocks centered on Court Square; exterior modifications visible from public ROW require Historic District review. Carriage-house / garage conversions are common ADU pathways in the district under SUP review. (map)
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
- Amendment
- Amendment
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Harrisonburg City Code Title 10 Planning and Development, Chapter 3 Zoning, adopted 1997-07-01, last amended 2024-06-25
- 1908-09-15 — State Normal and Industrial School for Women (now James Madison University) founded (institutional)
JMU's predecessor was established in 1908 and has grown to ~22,000 undergraduate and graduate students by 2025. JMU is Harrisonburg's largest employer and primary housing-demand driver.
Effect: JMU off-campus student housing creates exceptional ADU rental demand. Off-campus housing reaches every R-1, R-2, and R-3 residential district within a 2-mile radius of campus. - 1916-02-15 — Harrisonburg charter elevated to independent-city status (city-charter)
Harrisonburg, originally chartered as a town in 1849, was elevated to second-class Virginia independent city in 1916. Independent-city status confers county-equivalent land-use, taxation, and police-power authority directly to the city government.
Effect: Established Harrisonburg's authority to enact and administer its own zoning ordinance independent of any county. Rockingham County retains no jurisdiction inside the corporate limits. - 1917-01-01 — Eastern Mennonite University founded (institutional)
EMU was founded in 1917 in Park View on Harrisonburg's northern edge. Today ~1,400 students plus a graduate seminary draw faculty-staff housing demand into northern R-1 and R-3 neighborhoods.
Effect: EMU adds a secondary ADU rental demand pool concentrated in Park View and adjacent R-1 / R-3 neighborhoods on Harrisonburg's north side. - 1997-07-01 — Harrisonburg comprehensive zoning ordinance re-write (Title 10 Chapter 3) (local-ordinance)
The 1996-1997 zoning and subdivision rewrite established the residential districting framework (R-1, R-2, R-3, R-4, R-7) used today. Accessory dwellings were not given explicit by-right status; the SUP path was confirmed as the operative permitting route.
Effect: Set the present-day permitting status: accessory dwellings reviewed by Planning Commission and approved (with conditions) by City Council via Special Use Permit. Average SUP approval rate for residential accessory uses is approximately 75%. - 2020-06-09 — Zoning and Subdivision Ordinances Update Project commenced (local-ordinance)
Comprehensive multi-year rewrite initiated by Community Development. Includes proposed by-right ADU provisions for R-1 and R-2 districts, missing-middle density changes, and modernized parking standards. Public engagement ongoing through 2026.
Effect: If adopted before July 1, 2027 with by-right ADU provisions, would supersede the SUP requirement and align Harrisonburg with SB 531 ahead of the statewide effective date. - 2026-04-14 — Virginia SB 531 signed into law (statewide ADU preemption) (state-statute)
SB 531 (2026 General Assembly Regular Session) requires every Virginia locality, effective July 1, 2027, to permit at least one ADU by-right on any parcel with an existing single-family dwelling, caps total local permit and zoning fees at $500, and preempts owner-occupancy mandates. Ordinances adopted before January 1, 2026 are grandfathered.
Effect: Harrisonburg's current 1997 ordinance does not meet the January 1, 2026 grandfather threshold (no explicit ADU provisions), so SB 531 will compel by-right ADU permission city-wide on July 1, 2027. The $500 fee cap will reduce the SUP-era permit-bundle cost from ~$2,400 (SUP + building + trade fees) to $500.
Known issues (2)
- policy-review — Plan ~5-6 months of SUP wall-clock before construction can begin; budget rejection risk. SB 531's July 1, 2027 effective date removes both the wall-clock cost and the fee delta.
- fee-schedule-pending — Approximately $1,900 in permit-fee savings on each by-right ADU built after July 1, 2027, plus 4-5 months of wall-clock saved by skipping the SUP process.
Rockingham County — county ADU rules and overlays
County ADU ordinance
Rockingham County regulates accessory dwelling units primarily through accessory-use provisions in its zoning ordinance rather than through a standalone ADU chapter. The county's agricultural (A-1, A-2) and residential (R-1, R-2, RG-1) districts permit one accessory dwelling unit on a qualifying lot subject to minimum lot area, setback, and public-health requirements (well and septic sizing), with the ADU treated as subordinate to the principal dwelling. The county does not operate a Northern-Virginia-style ADU ordinance with an explicit size cap; instead, ADU feasibility is driven primarily by (1) the district's minimum lot area, (2) onsite-sewage capacity under Virginia Department of Health (VDH Central Shenandoah Health District) rules, and (3) the Uniform Statewide Building Code's residential-occupancy requirements. ADU feasibility is materially higher on rural A-1 and A-2 acreage than in the small R-1 residential subdivisions near Harrisonburg, where setback and lot-area minimums often require a Special Use Permit for a second dwelling. Short-term rental is regulated separately under the county's zoning ordinance with a distinct STR classification. Confirm the current accessory-dwelling section text and any by-right vs. Special Use Permit classification with the Rockingham County Department of Community Development before pricing a project.
County regulatory overlays
Rockingham County administers three overlay regimes that bear materially on ADU projects: (1) a Floodplain Overlay District tied to FEMA Special Flood Hazard Areas along the North River, South Fork Shenandoah River, Dry River, Smith Creek, Cooks Creek, and other Shenandoah Valley drainages; (2) Agricultural-Preservation and rural-preservation overlays reflecting the county's strong poultry and livestock economy and the visual character of US 33, US 11, and I-81 corridors plus the Skyline Drive / Shenandoah National Park and George Washington National Forest gateway routes; and (3) a public water-and-sewer service-area framework run by the Harrisonburg-Rockingham Regional Sewer Authority (HRRSA) and the Rockingham County Public Works / Utilities Division that sharply separates ADU feasibility inside vs. outside those service areas. The Massanutten resort area carries its own density and STR-related planning context reflecting its history as a Planned Community / Large-Scale Development. Rockingham County has NO coastal-commission jurisdiction (it is entirely inland, far outside the Chesapeake Bay Preservation Act boundary), NO CalFire-equivalent WUI regulatory overlay (Virginia has no statewide WUI program; the Virginia Department of Forestry coordinates wildfire response without a permit-constraining overlay), NO seismic-retrofit overlay (standard IRC/IBC provisions as adopted in the Virginia Uniform Statewide Building Code govern), and NO FAA Part 150 airport-noise overlay imposed on surrounding parcels (Shenandoah Valley Regional Airport / KSHD sits partly in Rockingham County with commercial service but no Part 150 noise-exposure overlay is in force).
- Rockingham County Floodplain Overlay District
- Rockingham County Water and Sewer Service Area / HRRSA Overlay
- Agricultural-Preservation and Rural-Preservation Context (Poultry Industry, Shenandoah National Park, George Washington National Forest, Conservation Easements)
County permitting (unincorporated parcels)
Rockingham County's Department of Community Development issues ADU building permits for every parcel in the county except those inside the independent city of Harrisonburg (which operates its own building department and zoning ordinance) and, for zoning matters, those inside the Towns of Bridgewater, Broadway, Dayton, Elkton, Grottoes, Mount Crawford, and Timberville where the town has displaced the county code. All unincorporated communities including Penn Laird, McGaheysville, Massanutten, Keezletown, Linville, Singers Glen, Lacey Spring, Fulks Run, Bergton, Cross Keys, and Port Republic route through the county. A typical Rockingham County ADU permit bundle includes: (1) a Zoning Permit from the county Planning and Zoning Division confirming district eligibility, setbacks, and any overlay triggers, (2) a Building Permit with stamped residential plans filed with the Building Inspections Division, (3) Electrical, Plumbing, and Mechanical trade permits, (4) a Virginia Department of Health onsite-sewage / well construction permit from the Central Shenandoah Health District for parcels not served by public water and sewer (the majority of county parcels), (5) a Floodplain Development Permit if any portion of the parcel is within the mapped 100-year floodplain under the county's Floodplain Overlay, and (6) any town-level review if the parcel is inside one of the seven incorporated towns.
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
- 22801
- 22802
- 22832
- 22834
- 22841
- 22846
- 22850
Post Office
- 3811 S Main St, 22801