ADU rules for Round Hill
Accessory Dwelling Unit (ADU) Rules for Round Hill, VA
Is your property eligible for an ADU?
# of Properties
286
Owner-occupied
71%
Zoning districts
10
Avg Home Value
$621,811
Median Lot Size
0.49 acres
Avg Income
$195,864
Residential Types:
286 housing units
Single Family
100%
Zoning Districts:
337 parcels · 10 districts
R-2
77%(261)
R-1A
9%(29)
B-1
5%(18)
PD-H3
3%(10)
Other
6%(19)
ADU Rules
What can you build in Round Hill, VA?
Round Hill, VA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
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.
Loudoun County