Seattle Construction Code Adoption Delayed to Nov 1

UPDATE [06/29/20]: After an emergency meeting of the State Building Code Council, the state code implementation effective date has now been pushed back to February 1, 2021. 

The Seattle Department of Construction & Inspections (SDCI) has provided an important update to NAIOPWA to share with our commercial real estate community. Please distribute widely. 


SDCI is in the process of updating Seattle's construction codes to the 2018 versions of the building, residential, existing buildings, mechanical, energy, fuel gas, and plumbing codes. We have been aiming for an effective date of July 1, 2020, to align with the effective date of the Washington State building codes. However, due to many factors, including the impacts of COVID-19, the effective date of Seattle's codes will be delayed until November 1, 2020. If the 2018 Washington State construction codes effective date is delayed past November 1, we will align the effective date of our codes with the State.

Please visit our code update website for continued information and to review proposed code change documents.

If you have questions, please contact Micah Chappell, Technical Code Development Manager, at [email protected].
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