ADUs are allowed in Lewis Township (Union)Types:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Lewis Township (Union), PA
Is your property eligible for an ADU?
# of Properties
728
Owner-occupied
49%
Zoning districts
5
Avg Home Value
$90,952
Median Lot Size
1.00 acres
Avg Income
$73,068
Residential Types:
728 housing units
Single Family
65%
2-3 Family
9%
Apts (4+ units)
6%
Other
20%
Zoning Districts:
1,129 parcels · 5 districts
R-R
46%(514)
A-P
29%(330)
W-P
14%(158)
V
11%(123)
Other
0%(4)
ADU Rules
What can you build in Lewis Township (Union), PA?
Lewis Township (Union), 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: Not permitted
Interior / Attached ADU Size Limits
- –Maximum size is the lesser of 800 sq ft or 25% of the original dwelling’s habitable floor area
Max Units
- –1 ADU per single-family lot
Owner Occupancy
- –One dwelling must be owner-occupied.
Parking
- –1 space per ADU (in addition to the 2 for the principal dwelling); parking must be on the same lot unless a shared/adjacent-lot arrangement is approved; reductions may be allowed under land development if peak hours differ or users are pedestrians/transit.
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
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.
Union County