23.48.235

Upper-level setback requirements in South Lake Union Regional Center

Seattle Municipal Code · Seattle Mun. Code § 23.48.235

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A. The following requirements for upper-level setbacks in this subsection 23.48.235.A apply to structures on lots abutting a street shown on Map A for 23.48.235, except for those structures with non-residential uses above 85 feet in height or residential uses above the base height limit for residential use, which are subject to the upper-level setback requirements of subsection 23.48.245.C. 1. For all zones except the SM-SLU 240/125-400 zone, any portion of a structure greater than 45 feet in height is required to set back from a lot line abutting a street shown on Map A for 23.48.235. In the SM-SLU 240/125-400 zone, portions of a structure greater than 75 feet in height are required to set back from a lot line abutting a street shown on Map A for 23.48.235. 2. A setback of 1 foot for every 2 additional feet of height is required for any portion of a structure exceeding the maximum height permitted without a setback according to subsection 23.48.235.A.1, up to a maximum setback of 15 feet measured from the street lot line, as shown in Exhibit A for 23.48.235 . Map A for 23.48.235 Upper-Level Setbacks B. Upper-level setbacks in the SM-SLU 85/65-160 zone. The following requirements for upper-level setbacks in this subsection 23.48.235.B apply to all development in the SM-SLU 85/65-160 zone on the blocks bounded by Valley Street, Mercer Street, Westlake Avenue North, and Fairview Avenue North as shown in Exhibit B for 23.48.012: 1. Portions of a structure above 45 feet in height shall set back a minimum of 15 feet from street lot lines abutting Valley Street, Westlake Avenue North, Terry Avenue North, Boren Avenue North, and Fairview Avenue North as shown in Exhibit B for 23.48.235 . 2. In addition to the upper-level setbacks specified in subsection 23.48.235.B.1, additional upper-level setbacks are required for tower structures that include residential use above the base height limit for residential use, or hotel use above a height of 85 feet, according to the provisions of subsection 23.48.245.C.3. Exhibit A for 23.48.235 Stepped Upper-Level Setbacks Exhibit B for 23.48.235 Upper-Level Setback from Specified Streets in SM-SLU 85/65-160 Zone C. Upper-level setbacks on alleys in the SM-SLU/R 65/95 zone. For lots abutting an alley in the SM-SLU/R 65/95 zone, portions of a structure greater than 25 feet in height shall set back a minimum of 1 foot from the alley lot line for every 2 feet of additional height above 25 feet, up to a maximum setback of 15 feet measured from the alley lot line, as shown in Exhibit A for 23.48.235 . D. 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 in required setbacks as shown in Exhibit C for 23.48.235 . Exhibit C for 23.48.235 Horizontal Projection into Upper-level Setbacks (Ord. 127375 , § 54, 2025; Ord. 125291 , § 10, 2017; Ord. 124883 , § 13, 2015.)