ADUs are allowed in OccoquanTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Occoquan, VA
Is your property eligible for an ADU?
# of Properties
90
Owner-occupied
7%
Zoning districts
6
Median Lot Size
0.03 acres
Avg Income
$100,061
Residential Types:
90 housing units
Apts (4+ units)
1%
Condos
58%
Other
41%
Zoning Districts:
553 parcels · 6 districts
R-3
64%(352)
B-1
23%(126)
R-1
9%(51)
R-2
2%(13)
Other
2%(11)
ADU Rules
What can you build in Occoquan, VA?
Occoquan, 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 750 sq ft of inhabitable space for an internal accessory dwelling unit; only one bedroom allowed.
Detached ADU Size Limits
- –Maximum inhabitable space for a detached accessory dwelling unit (backyard cottage) is 750 sq ft.
Max Units
- –R-1/R-2/R-3: 1 ADU/lot (detached single-family only).
- –No ADUs for duplex/townhouse/multifamily.
- –B-1: none specified.
Parking
- –No min/max for ADU parking; unlisted-use parking determined by the Zoning Administrator, with waivers in Old/Historic Occoquan; parking must be on the same parcel or via an easement; ADUs limited to one bedroom.
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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ADU rules in other Virginia municipalities
Rules change at the town line. Check the municipality your property is actually in.
Prince William County