

ADUs are allowed in OnleyTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Onley, VA
Is your property eligible for an ADU?
# of Properties
278
Owner-occupied
27%
Zoning districts
4
Avg Home Value
$267,225
Median Lot Size
0.46 acres
Avg Income
$52,762
Residential Types:
278 housing units
Single Family
100%
Zoning Districts:
734 parcels · 4 districts
R-1
67%(489)
B-G
27%(195)
M-1
7%(49)
900
0%(1)
ADU Rules
What can you build in Onley, VA?
Onley, 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
Parking
- –3 spaces per dwelling unit (ADU) on-site; tandem parking allowed; no ADU-specific reductions or waivers
Rental Restrictions
- –Short-term rentals prohibited townwide; ADUs may not be rented for periods of less than 30 days
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.
Accomack County