ADUs are allowed in Colonial BeachTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Colonial Beach, VA
Is your property eligible for an ADU?
# of Parcels
4,351
Zoning districts
9
Avg Parcel Value
$149,781
Median Parcel Size
0.15 acres
Zoning Districts:
4,346 parcels · 9 districts
R-2
76%(3,286)
R-1
12%(529)
CR
4%(159)
C-1
3%(137)
Other
5%(235)
ADU Rules
What can you build in Colonial Beach, VA?
Colonial Beach, 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 750 sq ft
- –Maximum size of 25% of the principal dwelling’s habitable space
- –With conditional use approval, maximum size of 950 sq ft
- –With conditional use approval, maximum size of 40% of the principal dwelling’s habitable space
Detached ADU Size Limits
- –Maximum detached ADU size of 750 sq ft or 25% of the principal dwelling’s habitable space, whichever is less.
- –By conditional use, maximum detached ADU size of 950 sq ft or 40% of the principal dwelling’s habitable space, whichever is less.
Max Units
- –Single-family detached (R-1, R-2): 1 ADU per lot. Duplex and multifamily: none specified.
Owner Occupancy
- –Owner must reside in either the principal or the accessory structure
Parking
- –1 space/ADU; off-street parking must be on the same lot as the dwelling; enclosed garages not credited; no tandem parking (except for single-family buildings)
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
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.
Westmoreland County