ADUs are allowed in Tredyffrin Township (Chester)Types:Detached
Types:Detached
Accessory Dwelling Unit (ADU) Rules for Tredyffrin Township (Chester), PA
Is your property eligible for an ADU?
# of Properties
8,962
Owner-occupied
89%
Zoning districts
22
Avg Home Value
$285,736
Median Lot Size
0.52 acres
Avg Income
$190,079
Residential Types:
8,962 housing units
Other
100%
Zoning Districts:
9,935 parcels · 22 districts
R1
44%(4,353)
R2
15%(1,524)
R4
12%(1,151)
R1/2
9%(896)
Other
20%(2,011)
ADU Rules
What can you build in Tredyffrin Township (Chester), PA?
Tredyffrin Township (Chester), PA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Conditional Use Permit
Max Units
- –Historic Resource Overlay: 1 accessory apartment per lot
- –Other districts: none specified
Owner Occupancy
- –No owner-occupancy requirement for the ADU.
Rental Restrictions
- –Short-term rentals (≤30 days) prohibited unless the ADU is a listed historic structure with a special exception; any added square footage to a historic structure may not be used as an STR; STRs must be registered under Chapter 150.
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.
Chester County
Charlestown Township (Chester)Downingtown Borough (Chester)East Bradford Township (Chester)East Brandywine Township (Chester)East Caln Township (Chester)East Goshen Township (Chester)East Marlborough Township (Chester)East Nottingham Township (Chester)Easttown Township (Chester)East Vincent Township (Chester)East Whiteland Township (Chester)Kennett Township (Chester)Lower Oxford Township (Chester)New Garden Township (Chester)New London Township (Chester)Schuylkill Township (Chester)Upper Uwchlan Township (Chester)Uwchlan Township (Chester)West Brandywine Township (Chester)West Caln Township (Chester)West Chester Borough (Chester)West Fallowfield Township (Chester)West Goshen Township (Chester)West Pikeland Township (Chester)