Montana Building Codes Council 

Adopted I-Codes:
​2021 International Building Code (IBC)
2021 International Residential Code (IRC)
2021 International Energy Conservation Code (IECC)​
Applicability (statewide, local, limited): STATEWIDE

The State of Montana Building Codes Council adopts codes for state projects but local cities, counties, etc can adopt a State certified building code 

Tall Mass Timber Adoption

The tall mass timber provisions went into effect in 2023.


The adopted code amendments are found in the following link  Building Code Amendments | SBCC ( The International Existing Building Code is adopted by reference in the Washington State Building Code.  The State of Washington adopted ICC codes may be viewed in read only format over the ICC website.   

Page last updated: December 2023