Building Construction Codes

Beginning July 1, 2016, the State Building Code includes:

  • 2015 International Building Code – as amended and adopted by Washington State (Includes adoption of Appendix E and ICC/ANSI A117.1-2009, and  the 2015 International Existing Building Code and International Swimming Pool and Spa Code)
  • 2015 International Residential Code – as amended and adopted by Washington State (Includes adoption of Appendices F and Q) Chapter 11 and Chapters 25 through 43 are not adopted)
  • 2015 International Mechanical Code – as amended and adopted by Washington State  (Includes adoption of 2015 International Fuel Gas Code,  2014 NFPA 58 & 2014 NFPA 54)
  • 2015 International Fire Code – as amended and adopted by Washington State
  • 2015 Uniform Plumbing Codeas amended and adopted by Washington State  (Includes adoption of Appendices A, B and I)   NOTE: See also WSEC Section C404 for additional piping requirements
  • 2015 Washington State Energy Code:

The Washington State Building Code is comprised of several different codes . Most are national model codes (International Codes) adopted by reference and amended at the state level. Others, such as the Washington State Energy Code, are state-written state-specific codes.

Additional Information

Here are some additional links to resources you may find helpful: