The 2018 Washington State Building Code will be effective February 1, 2021 and comprised of the following codes:

2018 International Building Code (Includes adoption of and amendments to the 2018 International Existing Building Code and ICC/ANSI A117.1-2009, and the International Swimming Pool and Spa Code)
2018 International Fire Code
2018 Washington State Energy Code
2018 International Residential Code
2018 International Mechanical Code
2018 Uniform Plumbing Code

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State Codes, Regulations & Guidelines
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Washington Building Codes

The building codes of Washington adopt the the International Building Code 2015 (IBC 2015), International Residential Code 2015 (IRC 2015), International Existing Building Code 2015 (IEBC 2015), International Mechanical Code 2015 (IMC 2015), International Fire Code 2015 (IFC 2015), International Fuel Gas Code 2015 (IFGC 2015), International Energy Conservation Code 2015 (IECC 2015), International Swimming Pool and Spa Code 2015 (ISPSC 2015), International Wildland-Urban Interface Code 2015 (IWUIC 2015), 2015 Uniform Plumbing Code, and the ANSI A117.1, 2009. These codes include amendments enacted at the state level.

Amendments

States and cities enact critical amendments to the base codes. Washington has made amendment to the codes. UpCodes provides the only source to view these amendments integrated into the model codes. Learn about amendments

Washington Agencies

Washington State Building Code Council
Website: https://sbcc.wa.gov
1500 Jefferson Avenue SE
Post Office Box 41449
Olympia, Washington 98504-1449
Phone: 360-407-9277
Email: sbcc@des.wa.gov