Seattle Code Adoption - What & Why

What’s Happening Now?

SDCI’s anticipated completion of the adoption and implementation of the 2024 Seattle Codes is no sooner than May of 2027.

The 2024 Seattle Codes are being developed on a compressed schedule over the next ten months due to the delayed completion of the State code adoption process. With this compressed schedule, SDCI is accepting code amendment proposals until June 1, 2026, for evaluation during the Seattle Codes development process.

Please send any amendment proposals to Jenifer Gilliland at jenifer.gilliland@seattle.gov.

See the links below for current drafts of the 2024 Seattle Construction Codes:

• Building Code
  • 2024 International Building Code Significant Changes
  • Appendix T - Single Exit Provisions for Multifamily up to six stories
  • Appendix S - Embodied Carbon Access
• Residential Code 
  • Appendix WD - Multiplex Buildings
• Draft Director’s Rule 7-2026, Sprinkler Systems and Fire Alarms for Elevator Machine Rooms, Control Rooms, Machinery Spaces, Hoistways and Pits in Existing Buildings

When will the 2024 Construction Codes Become Available for Purchase?

A bookmarked copy of the 2024 Seattle construction codes will be available for purchase as a pdf download through the International Code Council after May 1, 2027.

You can order printed copies of the current and previous Seattle construction codes and errata through SDCI. View our publication list for prices. To order, please submit a request through the Seattle Services Portal using the Permits - Trade, Construction and Land Use option. See How to Purchase Seattle Code Books From SDCI for instructions on how to submit your request.

Read only versions of the Seattle construction codes and errata are available on the code webpages.

Project Benefits

Regular updates to Seattle's construction codes make it easier to:

• Incorporate emerging technology and materials into construction to increase a building's safety, usability, and lifespan.

• Keep Seattle competitive and innovative with early adoption of national code changes.

• Adopt requirements that ensure Seattle's leading-edge energy and carbon reduction goals are met.

• Decrease differences in construction code adoption and enforcement with neighboring communities.     

The End Result

SDCI adopted and published the 2021 editions of the national model codes with State of Washington and local Seattle amendments.