Mandatory housing affordability (MHA) requirements
Seattle Mun. Code § 23.48.050
in effectThe provisions of Chapters 23.58B and 23.58C apply in all Seattle Mixed zones, except SM-SLU 85/65-160 zones and SM-UP zones that do not have a mandatory housing affordability suffix. (Ord. 125791 , § 60, 2019.)
Source: Seattle Municipal Code (Municode library)URL: https://library.municode.com/wa/seattle/codes/municipal_codeFetched: 7/25/2026