ADU Rules in Norfolk, Virginia

Norfolk is an independent city with approximately 238,000 residents, making it Virginia's second-largest city. As an independent city, Norfolk is completely separate from any surrounding county and manages all local government functions — including zoning and building permits — directly. Norfolk sits at the convergence of the Elizabeth River and Hampton Roads harbor, giving it both tremendous strategic and geographic significance. The city is home to Naval Station Norfolk, the largest naval station in the world, which fundamentally shapes land use patterns and ADU development in significant portions of the city.

Virginia statewide ADU law status

Virginia has no enacted statewide ADU preemption: SB 304 of 2024 would have required ADUs by-right but was deferred to the Virginia Housing Commission and not enacted. Va. Code § 15.2-2292.1 governs only temporary family health-care structures (≤300 sq ft caregiver units), not general ADUs.

Norfolk Local Zoning for ADUs

Norfolk's zoning ordinance provides the local framework within which ADUs are permitted. Key residential districts include R-SF (single-family), R-TH (townhouse), and several others. Typical ADU standards in Norfolk include:

• Maximum size: Generally limited to 1,200 square feet or a percentage of the primary dwelling's floor area
• Unit count: One ADU per single-family lot
• Setbacks: Detached ADUs must comply with the rear and side setbacks of the base district; reduced setbacks may apply for ADUs under certain ordinance provisions
• Height: Detached ADUs are typically capped at one story or 16 feet
• Lot coverage: Total impervious surface and building coverage must remain within district limits
• Parking: Virginia state law limits the parking requirements localities can impose on ADUs near transit

Contact the Norfolk Department of Planning at (757) 664-4752 or visit norfolk.gov/planning for the current adopted ADU provisions and any recent amendments.

Naval Station Norfolk — AICUZ Overlays

Naval Station Norfolk is the world's largest naval station by ship count. Its AICUZ (Air Installations Compatible Use Zones) study establishes noise contours and Accident Potential Zones affecting western and northwestern Norfolk neighborhoods, particularly those near the base in the Wards Corner, Granby, and Ocean View corridors:

• APZ I: Highest accident risk; new residential uses including ADUs are generally prohibited
• APZ II: Restricted density; ADU eligibility depends on the table of compatible uses
• Noise contours: Properties in the 65 dB or greater Day-Night Average Sound Level (DNL) contour face restrictions on new noise-sensitive land uses

Always verify your parcel's AICUZ overlay status with the city before committing to an ADU design. The Planning Department can confirm whether your property falls within an AICUZ-restricted zone.

Flooding and Sea Level Rise — A Critical Factor

Norfolk is one of the most flood-vulnerable cities in the continental United States. The city has recorded more than 14 inches of relative sea level rise since the early 20th century — the result of global sea level rise combined with land subsidence from groundwater extraction and glacial isostatic adjustment. Many Norfolk streets flood regularly during high tides, a phenomenon residents call "sunny day flooding," which occurs without any storm activity.

For ADU construction:

• Properties in FEMA Special Flood Hazard Areas (Zone AE or VE) must meet Base Flood Elevation (BFE) requirements
• ADUs — whether attached or detached — count as new construction and must comply with floodplain management ordinance
• Mechanical systems (HVAC, electrical panels) must be elevated or flood-proofed
• FEMA is updating Norfolk's flood maps; consult the city's floodplain administrator for the most current BFEs

Norfolk has a Coastal Resilience Strategy that acknowledges the ongoing impact of sea level rise on development and permitting. Some neighborhoods are subject to additional resilience overlay requirements.

Historic Districts

Portions of Norfolk — including the Ghent, Freemason, and Colonial Place neighborhoods — are in historic overlay districts or listed on the National Register of Historic Places. ADUs in these areas may require review by the Board of Zoning Appeals or the Architectural Review Board to ensure compatibility with historic character. Detached ADUs in rear yards are generally less visible and easier to approve, but all exterior materials and massing must be evaluated.

Permitting Process

1. Verify AICUZ and flood zone status — Check with Planning and FEMA before designing
2. Pre-application consultation — Norfolk Planning Department, (757) 664-4752
3. Zoning certificate — Confirm the ADU is permitted by right in your district
4. Building permit application — Submit drawings to the Permits, Inspections, and Code Compliance division
5. Inspections — Foundation, framing, mechanical, electrical, final
6. Certificate of Occupancy — Required before occupancy

Contact Information

• Norfolk Department of Planning: (757) 664-4752 | norfolk.gov/planning
• Building Inspections: (757) 664-4200
• Municipal Code: library.municode.com/va/norfolk/codes/code_of_ordinances

Disclaimer: This guide provides general information only and is not legal or planning advice. Zoning regulations, AICUZ boundaries, and flood maps are subject to change. Always verify current requirements directly with the City of Norfolk Planning Department and the official municipal code before making any development decisions.