ADUs are allowed in Cornwall Borough (Lebanon)Types:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Cornwall Borough (Lebanon), PA
Is your property eligible for an ADU?
# of Properties
1,971
Owner-occupied
78%
Zoning districts
17
Avg Home Value
$238,008
Median Lot Size
0.40 acres
Avg Income
$109,328
Residential Types:
1,971 housing units
Single Family
2%
2-3 Family
1%
Apts (4+ units)
2%
Other
94%
Zoning Districts:
2,058 parcels · 17 districts
RV
23%(466)
PD
23%(465)
RF
19%(399)
RLD
18%(374)
Other
17%(354)
ADU Rules
What can you build in Cornwall Borough (Lebanon), PA?
Cornwall Borough (Lebanon), PA 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 875 sq ft for a conversion apartment
- –Maximum size of 40% of the single-family dwelling’s habitable floor area (conversion apartment)
- –Maximum size limited to the dwelling’s habitable floor area minus 700 sq ft to retain the principal unit (conversion apartment)
Max Units
- –1 ADU per PRD single-family detached lot
Parking
- –No ADU-specific parking requirement or ratio; ADUs referenced in PRD sections with no parking rules; general off-street parking schedule covers dwellings but not ADUs.
ADU State Law
What can you build in Pennsylvania?
- –Pennsylvania 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.
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 Pennsylvania municipalities
Rules change at the town line. Check the municipality your property is actually in.
Lebanon County