Portland's Title 33 (Planning and Zoning) establishes setback requirements for all zones. Setbacks vary by zone designation, lot size, and building type. Residential zones (R5, R7, R10, etc.) have front, side, and rear setbacks that determine where structures may be built on a lot.
Residential setbacks in Portland's single-dwelling zones include a minimum front setback (typically 10-15 feet), side setbacks (5 feet minimum in R5 zone), and rear setbacks (typically 5 feet). The specific requirements depend on the base zone (R20, R10, R7, R5, R2.5) and lot dimensions. Multi-dwelling zones have different setback standards. Corner lots, through lots, and flag lots have special setback provisions. Setback modifications may be available through adjustments or planned developments. Accessory structures have reduced setback requirements in some cases.
Building within required setbacks without approval is a zoning violation. The Bureau of Development Services can require removal or modification of non-conforming structures. Building permits will not be issued for structures that violate setback requirements.
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See how Portland's setback rules rules stack up against other locations.
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