ADU Rules in Hampton, Virginia

Hampton is an independent city in Hampton Roads with approximately 135,000 residents. As an independent city, Hampton is completely separate from any county and manages all local government functions independently. The city occupies a peninsula between the James River and Hampton Roads harbor, giving it extensive waterfront and a legacy as one of the oldest English-speaking settlements in America — the original Hampton was settled in 1610, making it one of the oldest continuously occupied English settlements in North America.

Hampton's modern character is defined significantly by Joint Base Langley-Eustis, which includes Langley Air Force Base — headquarters of Air Combat Command (ACC), one of the most important Air Force major commands. The base's presence creates major AICUZ (Air Installations Compatible Use Zones) considerations across a large portion of Hampton that anyone planning an ADU must understand.

Virginia statewide ADU law status

Virginia has no enacted statewide ADU preemption: SB 304 (2024) would have required by-right ADUs, but was deferred to the Virginia Housing Commission and not enacted. Va. Code § 15.2-2292.1 covers only temporary family health-care structures. Hampton's local zoning ordinance controls whether an ADU is allowed on a specific parcel and what review process applies.

Hampton Local Zoning for ADUs

Hampton's zoning ordinance includes single-family residential districts (R-7, R-10, R-15, and others based on minimum lot size requirements). Typical ADU standards include:

• Maximum size: Generally limited to 1,200 square feet or a percentage of the primary dwelling area
• Unit count: One ADU per single-family lot
• Setbacks: Detached ADUs must comply with rear and side setbacks of the applicable district; typically 5 feet minimum from side and rear property lines
• Height: Detached ADUs are typically limited to one story or 16 feet
• Lot coverage: Combined structures must not exceed the district maximum
• Utilities: Connection to city water and sewer is required where available

Contact the Hampton Planning Department at (757) 727-6140 or visit hampton.gov/planning for the current ordinance language.

Langley AFB AICUZ — A Critical Overlay for Hampton

This is the most important land use constraint for many Hampton properties. Joint Base Langley-Eustis (Langley AFB) is the headquarters of Air Combat Command and hosts high-performance military aircraft around the clock. The AICUZ (Air Installations Compatible Use Zones) program for Langley establishes:

• Accident Potential Zones (APZs): Areas immediately around the runway approach and departure paths where risk of aircraft accidents is highest
  • APZ I: Innermost, highest risk. New residential uses — including ADUs — are generally prohibited in APZ I. If your parcel is in APZ I, a new ADU will likely be denied.
  • APZ II: Moderate risk. Residential density is restricted; ADU eligibility depends on the specific compatible use table for this zone.
• Noise contours: Areas within the 65 dB, 70 dB, and 75 dB Day-Night Average Sound Level (DNL) contours face increasing restrictions on noise-sensitive land uses like residences.

Western and central Hampton — including neighborhoods along LaSalle Avenue, Langley Avenue, and areas near the base perimeter — are most affected. Hampton and the Air Force have maintained formal coordination through Joint Land Use Studies to manage encroachment.

Before planning any ADU in Hampton, verify your parcel's AICUZ overlay status with the Hampton Planning Department. They can confirm whether your property falls within an APZ or significant noise contour. This step should come before any design investment.

Hampton Roads Sea Level Rise and Flooding

Hampton sits on a low-lying peninsula in one of the fastest-sinking regions in the United States. Hampton Roads is experiencing relative sea level rise driven by global sea level rise combined with local land subsidence. Some Hampton neighborhoods experience tidal flooding during normal lunar high tides — a phenomenon unrelated to storms.

For ADU construction:

• Properties in FEMA Special Flood Hazard Areas (Zone AE or VE) must meet Base Flood Elevation requirements
• Detached ADUs must be built at or above the BFE; mechanical systems must be elevated
• Coastal high-hazard zones (Zone VE) require elevated construction on pilings, adding significant cost
• FEMA is periodically updating Hampton Roads flood maps; check the latest at msc.fema.gov

Old Point Comfort and Historic Areas

Hampton's Old Point Comfort area, including Fort Monroe (now a National Monument), has significant historic significance. The Fort Monroe area operates under different authorities. Portions of Hampton near the historic downtown may have local historic overlay protections. Verify any historic district designations with the Planning Department before finalizing ADU plans.

Permitting Process

1. Verify AICUZ status — Contact Hampton Planning before designing; (757) 727-6140
2. Check flood zone — Verify at msc.fema.gov; get BFE if in a flood zone
3. Confirm zoning district — Use Hampton GIS or contact Planning
4. Pre-application consultation — Hampton Planning Department
5. Building permit application — Submit to the Development Services Division
6. Inspections and Certificate of Occupancy — Required before occupancy

Contact Information

• Hampton Planning Department: (757) 727-6140 | hampton.gov/planning
• Development Services: (757) 727-6101
• Municipal Code: library.municode.com/va/hampton/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 change over time. Always verify current requirements directly with the City of Hampton Planning Department and the official municipal code before making any development decisions.