The 2009 Seattle building, residential, mechanical, fuel gas, and existing building codes took effect on September 23, 2010. Applicants may choose to use either the 2006 until November 22, 2010.
The code books haven’t arrived as of publication date, but we expect them to be available by the second week in October. Watch for a notice on the DPD website. If you want to be notified when the codes are available, subscribe to our technical codes mailing list at www.seattle.gov/DPD/Codes/Technical_Codes/Subscribe_to_Our_Mailing_List/
The legislation adopting the codes is posted at www.seattle.gov/DPD/Codes/Technical_Codes/Overview/default.asp.
Code Development Analyst Supervisor