ADUs are allowed in DumfriesTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Dumfries, VA
Is your property eligible for an ADU?
# of Properties
240
Owner-occupied
43%
Zoning districts
9
Median Lot Size
0.29 acres
Avg Income
$95,441
Residential Types:
240 housing units
Apts (4+ units)
5%
Condos
52%
Other
43%
Zoning Districts:
1,935 parcels · 9 districts
R-3
46%(899)
R-2
36%(698)
B-1
8%(146)
B-2
6%(107)
Other
4%(85)
ADU Rules
What can you build in Dumfries, VA?
Dumfries, VA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
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.
Prince William County