ADUs are allowed in WestervilleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Westerville, OH
Is your property eligible for an ADU?
# of Properties
13,189
Owner-occupied
70%
Zoning districts
27
Avg Home Value
$449,382
Median Lot Size
0.24 acres
Avg Income
$116,072
Residential Types:
13,189 housing units
Single Family
67%
2-3 Family
1%
Apts (4+ units)
20%
Condos
6%
Other
6%
Zoning Districts:
15,194 parcels · 27 districts
R-1
37%(5,677)
PND
25%(3,869)
R-2
17%(2,550)
R-4
4%(556)
Other
17%(2,542)
ADU Rules
What can you build in Westerville, OH?
Westerville, OH 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
Interior / Attached ADU Size Limits
- –Maximum ADU size of 720 sq ft
Detached ADU Size Limits
- –Maximum size of 720 gross square feet for a detached ADU
Max Units
- –1 ADU per lot
Owner Occupancy
- –Lot owner must reside in a dwelling unit for the ADU’s duration
Parking
- –1 off-street space per ADU; must be on the same lot; only in the Olde Westerville Special Overlay District; must meet accessory-use standards; no transit-based waivers.
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 Ohio municipalities
Rules change at the town line. Check the municipality your property is actually in.
Franklin County