Montana Building Codes Council 

Current Codes and Edition Adopted:
​2018 International Building Code (IBC)
2018 International Residential Code (IRC)
2018 International Existing Building Code (IEBC)
2018 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.

Amendments Disadvantaging Wood Construction:

Amendments do not impact Wood Construction.

Next Update Cycle:



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: February 2022