ADUs are allowed in Aston Township (Delaware)Types:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Aston Township (Delaware), PA
Is your property eligible for an ADU?
# of Properties
1
Zoning districts
13
Zoning Districts:
7,439 parcels · 13 districts
R-2
48%(3,554)
R-1
20%(1,498)
R-3
11%(827)
TH
6%(442)
Other
15%(1,118)
ADU Rules
What can you build in Aston Township (Delaware), PA?
Aston Township (Delaware), PA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Not permitted
Interior / Attached ADU Size Limits
- –Maximum internal in-home apartment size is 25% of the principal dwelling’s gross floor area.
Max Units
- –Single-family detached: 1 per lot.
- –Detached ADU not permitted.
- –No explicit limits for duplex/multifamily or JADU.
Owner Occupancy
- –Owner must reside in the principal dwelling.
Parking
- –2 off-street spaces per ADU (in addition to the principal-dwelling parking requirement); no maximum stated; ADUs allowed only by special exception in R-1, R-2, and R-3 districts; no reductions or waivers.
Rental Restrictions
- –Attached ADU: renting to non-family prohibited; occupant must be immediate family.
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.
Delaware County
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