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Building Codes
All are subject to Washington State amendments.

As of July 1, 2016, the following codes are in place:
See IMC Title 16.04 for City of Issaquah adopted codes and administrative amendments.

2015 International Building Code - WAC 51-50
2015 International Residential Code - WAC 51-51
2015 International Fire Code - WAC 51-54A
2015 International Mechanical Code - WAC 51-52
2015 International Fuel Gas Code - WAC 51-52 
2014 Liquefied Petroleum Gas Code (NFPA 58)
2015 Uniform Plumbing Code - WAC 51 –56 and WAC 51-57
2015 International Existing Building Code - WAC 51-50
2015 Washington State Energy code - WAC 51-11C and WAC 51-11R
2009 ICC A117.1 Accessible and Usable Building and Facilities

View the State Building Code Council's site.