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ADUs are allowed in Unincorporated Adams
Types:DetachedInternal

Accessory Dwelling Unit (ADU) Rules for Unincorporated Adams, PA

Is your property eligible for an ADU?

# of Parcels
1
Zoning districts
1
Zoning Districts:
1 parcel · 1 district
GC
100%(1)

ADU Rules

What can you build in Unincorporated Adams, PA?

Unincorporated Adams, PA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Interior / Attached ADU Size Limits

  • –Maximum size of 1,000 sq ft for an internal/attached ADU
  • –Maximum size of 50% of the existing dwelling’s total residential living area for an internal/attached ADU

Detached ADU Size Limits

  • –Detached ADUs are only allowed on lots larger than 1 acre; otherwise no ADU area is allowed.
  • –Maximum size of 1,000 sq ft for a detached ADU.
  • –Maximum size of 50% of the existing dwelling’s total residential living area for a detached ADU.

Max Units

  • –1 ADU per property

Parking

  • –1 off-street space per ADU (in addition to principal-dwelling parking); no maximum; minimum applies in Village District (ADU requires one space)

Rental Restrictions

  • –The ADU shall not be rented to persons not related to the occupants of the principal dwelling.

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.

Adams County

Cumberland Township (Adams)Oxford Township (Adams)
See all municipalities in Adams County →See all Pennsylvania municipalities →