Accessory Structures in Allentown, PA (2026)
5 verified accessory structures rules for Allentown, Pennsylvania, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Pennsylvania has no statewide ADU mandate. Allentown zoning determines whether ADUs are permitted. Check local zoning for allowances and conditions.
Allentown ADU (Accessory Dwelling Unit) Rules
Some RestrictionsShed Rules
Allentown allows small sheds without permits (typically under 120 to 200 sq ft). Larger structures require building permits under PA UCC and must meet setbacks.
Allentown Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Garage conversions in Allentown require building permits under PA UCC. Replacement parking may be required. Zoning approval needed.
Allentown Garage Conversion Rules
Some RestrictionsCarport Rules
Allentown requires permits for carport construction. Setback requirements, height limits, and lot coverage maximums apply.
Allentown Carport Construction Rules
Some RestrictionsTiny Homes
Allentown regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.
Allentown Tiny Home & Small Dwelling Rules
Some RestrictionsLooking for Lehigh County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Allentown city rules.
Accessory Structures in Lehigh County →