Portland's Title 33 (Planning and Zoning) establishes maximum building heights by zone. Single-dwelling residential zones generally limit height to 30 feet. Multi-dwelling and commercial zones have higher limits. Height is measured from average grade to the highest point of the structure.
In single-dwelling zones (R5, R7, R10, R20), the maximum height is generally 30 feet. The R2.5 zone also has a 30-foot limit. Multi-dwelling zones range from 35 to 75 feet depending on the zone. Commercial and mixed-use zones vary widely. Central City plan district heights can exceed 200 feet in designated areas. Height is measured from the average grade plane to the highest point of the roof. Chimneys, antennas, and similar features may extend above the height limit with restrictions. Height bonuses may be available for affordable housing or other community benefits.
Exceeding the height limit without approval is a zoning violation. Building permits are not issued for structures exceeding the allowed height. Non-conforming structures may be required to be modified or demolished.
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See how Portland's structure height limits rules stack up against other locations.
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