ADUs are allowed in MainevilleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Maineville, OH
Is your property eligible for an ADU?
# of Properties
105
Owner-occupied
59%
Zoning districts
13
Median Lot Size
0.26 acres
Avg Income
$113,226
Residential Types:
105 housing units
Single Family
84%
Other
16%
Zoning Districts:
789 parcels · 13 districts
R-1
45%(352)
R-3
27%(210)
R-R
12%(91)
DC
8%(67)
Other
9%(69)
ADU Rules
What can you build in Maineville, OH?
Maineville, OH 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 is the lesser of 50% of the primary dwelling's floor area or 1,500 sq ft
Detached ADU Size Limits
- –Maximum size is the lesser of 50% of the primary dwelling’s gross floor area or 1,500 sq ft for a detached accessory dwelling unit
Max Units
- –1 ADU per lot (owner-occupied single-family; internal or detached).
- –0 ADUs per lot for duplex and for multifamily.
Owner Occupancy
- –Primary dwelling must be owner-occupied.
Parking
- –Off-street parking must accommodate all occupants of both units; no numeric standard. Driveway spaces may count; off-site parking cannot satisfy single-family requirements.
Rental Restrictions
- –ADUs shall not be leased or rented; both detached and attached ADUs are prohibited.
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 Ohio municipalities
Rules change at the town line. Check the municipality your property is actually in.
Warren County