Building Codes

General

• The text of the County Code related to Building and Construction (CCC 21)
• Washington State Law has adopted the 2018 editions of the codes as of May 1st, 2021
• 2021 Codes will tentatively become effective on October 29th, 2023
• Washington State RCWs and WACs

2018 Code References

• International Residential Code
• International Building Code
• International Mechanical Code
• Uniform Plumbing Code

Energy Code References

• Washington State Energy Code Residential and Commercial
• WSU Extension Energy Program

International Building Code

• International Code Council
• Evaluation Service Reports