2021 Seattle Code Adoption- Timeline
Timeline
The 2021 editions of the Seattle construction codes went into effect on November 15, 2024.
Wildfire smoke has moved into western Washington, and air quality may get worse through the week. An air quality alert is in effect until at least Wednesday at 5:00 p.m. Air quality may reach unhealthy levels through Thursday. Learn how to stay safe by visiting the City's Wildfire Smoke Safety page.

The 2021 editions of the Seattle construction codes went into effect on November 15, 2024.