All are subject to Washington State amendments.
Pending Council adoption on June 5, the following codes are in place starting July 1, 2023:
See IMC Title 16.04 for City of Issaquah adopted codes and administrative amendments.
- 2021 International Building Code – Chapter 51-50 Washington Administrative Code (“WAC”)
- 2021 International Residential Code – Chapter 51-51 WAC
- 2021 International Mechanical Code – Chapter 51-52 WAC
- 2021 National Fuel Gas Code (NFPA 54) – Chapter 51-52 WAC
- 2020 Liquefied Petroleum Gas Code (NFPA 58) – Chapter 51-52 WAC
- 2021 International Fuel Gas Code – Chapter 51-52 WAC
- 2021 Uniform Plumbing Code – Chapter 51-56 WAC
- 2021 Washington State Energy Code, Commercial Provisions and Residential Provisions – Chapters 51-11C and 51-11R WAC
- 2021 International Existing Building Code – Chapter 51-50 WAC
- 2021 International Property Maintenance Code
- 2021 International Swimming Pool and Spa Code – Chapter 51-51 WAC
- 2021 International Wildland-Urban Interface Code – Chapter 51-55 WAC
- 2017 ICC A117.1-17 Accessible and Usable Building and Facilities
View the State Building Code Council's site.
Permits accepted for review before July 1, 2023 will be reviewed under the 2018 code series. Please visit the full rulemaking page for the State Building Code Council.