

ADUs are allowed in Douglass Township (Montgomery)Types:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Douglass Township (Montgomery), PA
Is your property eligible for an ADU?
# of Properties
3,753
Owner-occupied
91%
Zoning districts
17
Avg Home Value
$147,248
Median Lot Size
0.46 acres
Avg Income
$124,250
Residential Types:
3,753 housing units
Single Family
97%
2-3 Family
1%
Apts (4+ units)
2%
Other
1%
Zoning Districts:
4,598 parcels · 17 districts
R-2
43%(1,992)
R-A
24%(1,090)
R-3
14%(630)
R-1
10%(470)
Other
9%(416)
ADU Rules
What can you build in Douglass Township (Montgomery), PA?
Douglass Township (Montgomery), 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: Not permitted
Interior / Attached ADU Size Limits
- –Maximum size of 1,200 sq ft for an internal in-home apartment
- –Maximum size of 40% of the primary residence’s living area for an internal in-home apartment
Owner Occupancy
- –Owner of record must occupy either the principal dwelling or ADU
Parking
- –2 spaces/ADU; must share driveway with the primary residence; must meet underlying zoning district standards and Article XXV, Off-Street Parking.
Rental Restrictions
- –Renting to unrelated tenants prohibited; ADU must be owner-occupied or occupied by an immediate family member; permit valid only while either unit is owner-occupied.
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.
Montgomery County
Abington Township (Montgomery)Cheltenham Township (Montgomery)East Norriton Township (Montgomery)Horsham Township (Montgomery)Limerick Township (Montgomery)Lower Merion Township (Montgomery)Lower Pottsgrove Township (Montgomery)Lower Providence Township (Montgomery)Marlborough Township (Montgomery)Norristown Borough (Montgomery)Plymouth Township (Montgomery)Pottstown Borough (Montgomery)Skippack Township (Montgomery)Souderton Borough (Montgomery)Trappe Borough (Montgomery)Upper Dublin Township (Montgomery)Upper Gwynedd Township (Montgomery)Upper Merion Township (Montgomery)Upper Moreland Township (Montgomery)West Norriton Township (Montgomery)Whitemarsh Township (Montgomery)Whitpain Township (Montgomery)