Permit guides
Search the published guide library. Check the conditions, confirm the jurisdiction, then follow the official application path.
A Portland ADU requires a building permit plus electrical, plumbing and mechanical trade permits, with zoning, utility, system-development-charge and inspection requirements.
Replacing a residential service panel or changing a fuse box to circuit breakers requires a Portland electrical permit.
Portland's fence permit threshold depends on material: over 7 feet for wood, over 4 feet for masonry or concrete, and over 8 feet for woven wire or chain link; pool barriers require permits.
Portland requires a residential mechanical permit for furnaces, heat pumps, air conditioners, mini-splits, ductwork and related gas work.
Reroofing a Portland one- or two-family home with material of similar weight does not need a building permit, including replacement of some or all existing sheathing.
Portland requires solar permitting through DevHub, with the application type determined by the roof, mounting, electrical and structural scope.
Portland lists water-heater replacement as work requiring a residential plumbing permit, with electrical, mechanical or gas permits added when those systems change.