ADUs are allowed in WarrentonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Warrenton, VA
Is your property eligible for an ADU?
# of Properties
3,327
Owner-occupied
96%
Zoning districts
15
Avg Home Value
$510,805
Median Lot Size
0.21 acres
Avg Income
$104,843
Residential Types:
3,327 housing units
Single Family
100%
Zoning Districts:
4,804 parcels · 15 districts
R-10
26%(1,238)
RT
14%(691)
R-6
14%(650)
RMF
11%(546)
Other
35%(1,679)
ADU Rules
What can you build in Warrenton, VA?
Warrenton, VA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Special Permit
Size Limits
- –Maximum size of 25% of the main dwelling’s total floor area
Owner Occupancy
- –Owner must occupy either the main dwelling or the ADU
Parking
- –3 off-street spaces per ADU; no max; applies to ADUs allowed by Special Use Permit in R-15/R-10
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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Learn the key rules and size limits for ADUs
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.
Fauquier County