Washington State Building Code
The Washington State Building Code is comprised of several different codes. Most are national model codes adopted by reference and amended at the state level. Others, such as the Washington State Energy Code, are state-written state-specific codes.
Only the state amendments and state-written codes are available on this website for viewing and download. For information on purchasing the base model codes or hard copies of the state amendments, see the Ordering Information page. The International model codes may be viewed through the following site: http://publicecodes.cyberregs.com/icod/
Printing Instructions: The following amendments are formatted as insert pages to the first edition of the codes. They are meant to be printed as two-sided documents and contain the appropriate blank pages to print across from the amended page.
2009 International Building Code (Includes amendments effective July 1, 2011)(Includes adoption of Appendix E and ICC/ANSI A117.1-2003, and the 2009 International Existing Building Code) Effective July 1, 2010CO Alarm Rules (IBC) effective April 1, 2012
2003 International Building Code (Includes adoption of Appendix E and ICC/ANSI A117.1-1998 effective through 6/05 and ICC ANSI A117.1-2005 effective 7/1/05) Effective July 1, 2004
2009 International Residential Code(corrected copy June 23, 2010 with changes to pages 62, 70, 108, 167, 345) (Includes adoption of Appendices F and G; Chapters 11 and 25 through 42 are not adopted) Effective July 1, 2010CO Alarm Rules (IRC) effective April 1, 2012
2003 International Residential Code ( Chapters 11 and 25 through 42 are not adopted) (Effective July 1, 2004)
2003 International Mechanical Code (Includes adoption of 2001 NFPA 58 & 2002 NFPA 54) (Effective July 1, 2004)
2009 International Fire Code (corrected copy June 9, 2010; with changes to Index & pages 51, 114, 125, 405; and June 21, 2010, with changes to pages 80, 94 and 119) Effective July 1, 2010CO Alarm Rules (IFC Chapter 9) effective April 1, 2012CO Alarm Rules (IFC Chapter 46) effective April 1, 2012
2003 International Fire Code (Effective July 1, 2004)
2003 Uniform Plumbing Code (Includes adoption of Appendices A, B and I) (Effective July 1, 2004)
2012 Washington State Energy Code WAC 51-11C (Commercial) 2nd Printing (Errata pages for first printing - before July 15) WAC 51-11R (Residential) 2nd Printing (Errata pages for first printing- before July 15) Appendix Chapters 2nd Printing (Errata page for first printing-before Sept 9) Based on the 2012 IECC; "Residential" includes One- and Two-family dwellings, Townhouses and Group R-2 and R-3 buildings three stories or less "Commercial" includes all buildings not covered under "Residential" (Effective July1, 2013)
2003 Washington State Energy Code RS 29 - Nonresidential Building Design by Systems Analysis (Effective July 1, 2004)
2006 Washington State Ventilation & Indoor Air Quality Code (Effective July 1, 2007)Note: This code will be repealed as of July 1, 2010. The requirements formerly found in this WAC are now incorporated into the IMC and IRC
2003 Washington State Ventilation & Indoor Air Quality Code (Effective July 1, 2004)