2018 Seattle Construction Code Adoption Delayed Until 2021
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, and plumbing codes. Due to many factors, including the impacts of the COVID-19, the 2018 Washington State Construction Codes effective date has been delayed. SDCI will be aligning the effective date of our 2018 code versions with the State’s current effective date of February 1, 2021.