Applicability and general requirements
Seattle Mun. Code § 23.58C.025
in effectA. General. If an applicant seeks approval of a permit for development as described according to subsection 23.58C.025.B, the applicant shall comply with this Chapter 23.58C , either through the payment option according to Section 23.58C.040 or the performance option according to Section 23.58C.050 . B. Applicability. Except as provided according to subsection 23.58C.025.C, this Chapter 23.58C shall apply to development that includes units, whether such development occurs through one or more of the following: 1. Construction of a new structure; 2. Construction of an addition to an existing structure that results in an increase in the total number of units; 3. Alterations within an existing structure that result in an increase in the total number of units; or 4. Change of use that results in an increase in the total number of units. C. Exemption. Low-income housing is exempt from the requirements of this Chapter 23.58C . D. Relationship to incentive zoning. Where the provisions of the zone refer to this Chapter 23.58C and where bonus residential floor area or extra residential floor area may be achieved according to the provisions of the zone and/or Chapter 23.58A , the following provisions apply: 1. All requirements to provide affordable housing to gain bonus residential floor area or extra residential floor area according to the provisions of the zone and/or Chapter 23.58A shall be satisfied solely by compliance with this Chapter 23.58C . 2. Any non-housing requirements for achieving bonus residential floor area or extra residential floor area shall be satisfied according to the provisions of the zone and/or Chapter 23.58A . 3. Extra residential floor area achieved in HR zones by transfer of development potential, providing neighborhood open space, or providing a neighborhood green street setback according to subsection 23.45.516.B.2 shall be excluded from the gross floor area of the development for purposes of subsection 23.58C.040.A.1 and any units contained in such extra floor area shall be excluded from the total number of units in the structure for purposes of subsection 23.58C.050.A.1. (Ord. 126855 , § 53, 2023; Ord. 125791 , § 95, 2019; Ord. 125291 , § 40, 2017; Ord. 125108 , § 4, 2016.)
Source: Seattle Municipal Code (Municode library)URL: https://library.municode.com/wa/seattle/codes/municipal_codeFetched: 7/25/2026