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ADU rules for Unincorporated Madison

Accessory Dwelling Unit (ADU) Rules for Unincorporated Madison, VA

Is your property eligible for an ADU?

# of Properties
7
Zoning districts
21
Zoning Districts:
9,732 parcels · 21 districts
A1
69%(6,742)
C1
14%(1,367)
R1
11%(1,084)
B1
2%(168)
Other
4%(371)

ADU Rules

What can you build in Unincorporated Madison, VA?

Unincorporated Madison, VA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Parking

  • –2 spaces per family dwelling unit (no ADU-specific rate); no ADU-specific exceptions; spaces must be in a private garage or on the lot; for 1–3 family dwellings, spaces must be on the same lot as the dwelling

ADU State Law

What can you build in Virginia?

  • –Virginia does not have a statewide ADU mandate; ADU rules are set by individual municipalities.
  • –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
  • –SB 304 would have mandated ADUs. It passed the Virginia Senate in 2024 but was continued/left in House committee (i.e., not enacted statewide)

What's allowed on your lot?

These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.

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Is your property eligible for an ADU?

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