

ADUs are allowed in South Strabane Township (Washington)Types:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for South Strabane Township (Washington), PA
Is your property eligible for an ADU?
# of Parcels
5,128
Zoning districts
17
Avg Parcel Value
$340,471
Median Parcel Size
0.39 acres
Zoning Districts:
5,096 parcels · 17 districts
R-3
25%(1,294)
R-1
23%(1,174)
R-4
16%(817)
R-2
15%(766)
Other
21%(1,045)
ADU Rules
What can you build in South Strabane Township (Washington), PA?
South Strabane Township (Washington), PA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Max Units
- –1 ADU per lot in A-1 and R-1 (existing single-family); max. 1 conversion apartment per dwelling
Owner Occupancy
- –Landowner must occupy the principal residence; the ADU must be accessory to it.
Rental Restrictions
- –A-1: Rentals limited to specified caretakers, farmworkers, or qualifying relatives. R-1: Initially limited to caretakers or qualifying relatives; may be rented to anyone once that need ends.
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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ADU rules in other Pennsylvania municipalities
Rules change at the town line. Check the municipality your property is actually in.
Washington County