ADUs are allowed in Carnegie Borough (Allegheny)Types:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Carnegie Borough (Allegheny), PA
Is your property eligible for an ADU?
# of Properties
3,174
Owner-occupied
70%
Zoning districts
14
Avg Home Value
$101,491
Median Lot Size
0.11 acres
Avg Income
$80,188
Residential Types:
3,174 housing units
Single Family
79%
2-3 Family
8%
Apts (4+ units)
4%
Other
8%
Zoning Districts:
3,733 parcels · 14 districts
R-2
49%(1,826)
R-1
19%(702)
C-2
8%(298)
R-3
7%(269)
Other
17%(638)
ADU Rules
What can you build in Carnegie Borough (Allegheny), PA?
Carnegie Borough (Allegheny), PA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Parking
- –1 space/ADU; no max; off-street parking required borough-wide except within the defined portion of the Commercial Districts bounded by Mansfield, Kinney Street, Third Avenue, Williams Street, and Broadway
Rental Restrictions
- –Rental restricted to elderly parents or other dependent relatives only; not rentable to non-family or for short-term use
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.
Allegheny County
Aleppo Township (Allegheny)Baldwin Borough (Allegheny)Bell Acres BoroughBethel Park Borough (Allegheny)Bridgeville Borough (Allegheny)Castle Shannon Borough (Allegheny)Crafton Borough (Allegheny)Duquesne City (Allegheny)Findlay Township (Allegheny)Fox Chapel Borough (Allegheny)Franklin Park Borough (Allegheny)Hampton Township (Allegheny)Kennedy Township (Allegheny)Marshall Township (Allegheny)McCandless Township (Allegheny)Monroeville Borough (Allegheny)Moon Township (Allegheny)Mt Lebanon Township (Allegheny)Oakmont Borough (Allegheny)Ohio Township (Allegheny)Penn Hills Township (Allegheny)PittsburghRobinson Township (Allegheny)Rosslyn Farms Borough (Allegheny)