Upper-level setback requirements in SM-UP zones
Seattle Mun. Code § 23.48.735
in effectA. In all SM-UP zones, any portion of a structure greater than 45 feet in height or 65 feet in height must be set back from a lot line that abuts a designated street shown on Map A for 23.48.735. A setback of an average of 10 feet from the lot line is required for any portion of a structure exceeding the maximum height that is permitted without a setback. Map A for 23.48.735 Upper-level setbacks B. Projections permitted in required upper-level setbacks. Horizontal projections, including decks, balconies with open railings, eaves, cornices, and gutters are permitted to extend a maximum of 4 feet into required setbacks as shown in Exhibit A for 23.48.735 . Exhibit A for 23.48.735 Horizontal projection into upper-level setbacks (Ord. 125603 , § 43, 2018; Ord. 125432 , § 14, 2017.)
Source: Seattle Municipal Code (Municode library)URL: https://library.municode.com/wa/seattle/codes/municipal_codeFetched: 7/25/2026