ADUs are allowed in LancasterTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Lancaster, OH
Is your property eligible for an ADU?
# of Properties
3,704
Owner-occupied
25%
Zoning districts
24
Avg Home Value
$188,215
Median Lot Size
0.13 acres
Avg Income
$60,988
Residential Types:
3,704 housing units
Single Family
3%
2-3 Family
2%
Apts (4+ units)
90%
Other
5%
Zoning Districts:
17,779 parcels · 24 districts
RT
47%(8,409)
R-MD
30%(5,386)
CG
5%(833)
RM
4%(639)
Other
14%(2,512)
ADU Rules
What can you build in Lancaster, OH?
Lancaster, 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: Not permitted
Interior / Attached ADU Size Limits
- –Maximum internal ADU size of 800 sq ft
- –Internal ADU may not be larger than the primary dwelling unit’s size
Max Units
- –R‑MD: 1 ADU per lot; Detached ADUs prohibited. RT: 1 ADU per lot; Detached ADUs prohibited. CBD: 1 ADU per lot; Detached ADUs prohibited.
Owner Occupancy
- –Primary dwelling with ADU must be owner-occupied.
Parking
- –1 space per ADU; CBD: no off-street parking required if within 1,000 ft of sufficient on-street/public parking; garage spaces may count; required parking must be on paved surfaces; otherwise, standard requirements apply.
Rental Restrictions
- –Detached ADUs prohibited; cannot be rented.
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.
Fairfield County