ADUs are allowed in LebanonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Lebanon, OH
Is your property eligible for an ADU?
# of Properties
6,595
Owner-occupied
67%
Zoning districts
35
Median Lot Size
0.23 acres
Avg Income
$100,228
Residential Types:
6,595 housing units
Single Family
80%
2-3 Family
7%
Apts (4+ units)
4%
Condos
5%
Other
5%
Zoning Districts:
8,227 parcels · 35 districts
R-1C
36%(2,986)
R-1B
18%(1,446)
R-1CC
8%(619)
R-1D
6%(525)
Other
32%(2,651)
ADU Rules
What can you build in Lebanon, OH?
Lebanon, 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 of 75% of the principal building’s first-floor area
Detached ADU Size Limits
- –Maximum size of 800 sq ft for new detached ADUs (conversions of existing accessory structures are exempt).
- –Maximum size of 75% of the principal building’s first-floor area (conversions of existing accessory structures are exempt).
Owner Occupancy
- –Owner must reside on the property as primary residence.
Parking
- –1 space/ADU; CBD reduces by 75% before other modifications; >15% site modifications trigger Conditional Use review
Rental Restrictions
- –Short-term rentals must follow citywide STR rules.
- –Inside CBD/CRD: owner-occupied and non-owner-occupied STRs allowed; outside CBD/CRD: only owner-occupied STRs.
- –Unhosted full-property rentals capped at 90 days/year; hosted STRs allowed; STR registration required.
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