Renton, WA Building Setbacks & Zoning: Structure Height Limits (2026)

Renton Municipal Code Title 4-2 establishes maximum building heights by zoning district. In most single-family zones (R-4, R-6, R-8), the maximum residential height is approximately 30 feet to the peak, measured from average grade. R-10 and R-14 allow around 30 to 35 feet. Mixed-use and commercial zones (CA, CD, COR, UC) allow significantly taller buildings, with the Urban Center downtown and Center Downtown zones permitting structures well above 50 feet, and certain projects near The Landing and Southport authorized to much greater heights through master plan approval. Accessory structure height is typically capped at 15 feet or less. Airport-related overlays around Renton Municipal Airport (RCW 14.12) impose FAR Part 77 imaginary surfaces that further cap structure height in flight approach zones. Shoreline management rules under the Shoreline Master Program and critical areas regulations may reduce allowed heights near Lake Washington and the Cedar River. Height is measured to the highest point including parapets, with certain exceptions for chimneys, antennas, and mechanical equipment. Confirm your zone and any overlays with CED.