

ADU rules for Chambersburg Borough (Franklin)
Accessory Dwelling Unit (ADU) Rules for Chambersburg Borough (Franklin), PA
Is your property eligible for an ADU?
# of Properties
7,251
Owner-occupied
57%
Zoning districts
12
Avg Home Value
$18,347
Median Lot Size
0.17 acres
Avg Income
$61,809
Residential Types:
7,251 housing units
Single Family
84%
2-3 Family
4%
Apts (4+ units)
7%
Other
5%
Zoning Districts:
8,346 parcels · 12 districts
MDR
50%(4,145)
LDR
30%(2,470)
DCH
8%(638)
CC
4%(362)
Other
9%(731)
ADU Rules
What can you build in Chambersburg Borough (Franklin), PA?
Chambersburg Borough (Franklin), 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: Not addressed in the local bylaw
Parking
- –No ADU-specific parking standards; general rule: 2 spaces per dwelling (§300-77); Central Core Area has none (§300-45).
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.
Franklin County