ADUs are allowed in Unincorporated WarrenTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Warren, VA
Is your property eligible for an ADU?
# of Properties
17,408
Owner-occupied
58%
Zoning districts
12
Avg Home Value
$288,647
Median Lot Size
1.10 acres
Avg Income
$97,352
Residential Types:
17,408 housing units
Single Family
100%
Zoning Districts:
19,451 parcels · 12 districts
R-1
55%(10,718)
A
40%(7,688)
SR
2%(357)
C
1%(177)
Other
3%(511)
ADU Rules
What can you build in Unincorporated Warren, VA?
Unincorporated Warren, VA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 1,500 sq ft (may be up to 3,000 sq ft if converted within the existing home or principally below grade)
Detached ADU Size Limits
- –Maximum size of 1,500 sq ft
Max Units
- –1 ADU per single-family lot
- –Duplex/multifamily: no per-lot maximum stated.
Parking
- –2 spaces per ADU, in addition to the spaces required for the principal dwelling
Rental Restrictions
- –Short-term rentals (<30 days) prohibited; long-term rentals permitted
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?
ADU rules in other Virginia municipalities
Rules change at the town line. Check the municipality your property is actually in.
Warren County