SDCI is in the process of updating Seattle’s construction codes to the 2018 versions of the building, residential, existing buildings, fire, electrical, mechanical, energy, fuel gas, elevator, boiler, grading, and plumbing codes. SDCI was planning to adopt the 2018 edition of the codes effective July 1, 2020. Due to several factors, including the impacts of Covid-19 and the Governor’s executive order, the effective date was delayed to Feb 1, 2021. Adoption of Seattle’s 2018 suite of construction codes has been further delayed. The revised effective date is March 15, 2021.
Between February 1, 2021 and March 14, 2021, SDCI will accept permit applications using either the 2015 or 2018 codes. As of March 15, 2021, SDCI will only accept permit applications that use the 2018 codes.
Further information can be found on the SDCI website.