Visit our new 2018 Seattle Building Code website! We’re currently working on amendments for the 2018 Seattle Building Code, Residential Code, Existing Building Code, Fire Code, Plumbing Code, Mechanical Code, Electrical Code, Boiler Code, and Elevator Code. Amendments under current review are those adopted by the WA State Building Code Council, current amendments of the 2015 Seattle Codes continuing in the 2018 Codes, and newly proposed changes from various stakeholders.