The 2015 Seattle codes have been officially adopted. As of January 1, 2017, you are required to use the 2015 Seattle codes in the design of your building.
We update the Seattle Building, Existing Building, Residential, Plumbing, Energy, Mechanical, and Fuel Gas codes every three years. By reviewing, amending, and adopting the model codes, we help ensure that Seattle’s built environment reflects the latest in design, technologies, and safety standards
The 2015 Seattle codes went into effect on January 1, 2017.