ADUs are allowed in West Caln Township (Chester)Types:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for West Caln Township (Chester), PA
Is your property eligible for an ADU?
# of Properties
2,776
Owner-occupied
84%
Zoning districts
7
Avg Home Value
$135,950
Median Lot Size
1.10 acres
Avg Income
$112,076
Residential Types:
2,776 housing units
Single Family
6%
Other
94%
Zoning Districts:
3,440 parcels · 7 districts
RR
39%(1,343)
SRR
38%(1,298)
RC
15%(508)
AP
6%(217)
Other
2%(74)
ADU Rules
What can you build in West Caln Township (Chester), PA?
West Caln 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: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size is 30% of the principal dwelling’s total floor area for an internal or attached in-home apartment in a single-family detached house.
- –Maximum additional new floor area that may be built to create the in-home apartment is 15% of the existing dwelling’s gross floor area (single-family detached).
Detached ADU Size Limits
- –Maximum size of 30% of the principal dwelling’s total floor area
Max Units
- –1 per lot (single-family detached)
- –Up to 2 additional farm-related dwelling units per parent agricultural tract
Owner Occupancy
- –Owner must occupy either the principal dwelling or the ADU
Parking
- –2 spaces per ADU; reserve parking area via conditional use may reduce the requirement; no other reductions or waivers provided.
Rental Restrictions
- –In the Agricultural Preservation District, ADUs may only be used by family members or farm workers; general rentals prohibited.
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)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)Tredyffrin Township (Chester)Upper Uwchlan Township (Chester)Uwchlan Township (Chester)West Chester Borough (Chester)West Fallowfield Township (Chester)West Goshen Township (Chester)West Pikeland Township (Chester)West Sadsbury Township (Chester)West Vincent Township (Chester)