Current Codes

All of the codes listed below are amended and adopted by:

Administrative Rules of Montana (ARM) Title 24, Chapter 301


  • Click  to view the Building Codes adopted by Montana 
  • International Building Code, 2021 Edition - Effective: June 11, 2022
  • International Residential Code, 2021 Edition - Effective: June 11, 2022
  • International Existing Building Code, 2021 Edition - Effective: June 11, 2022
  • ICC A117.1 – Accessibility, 2017 Edition  – Effective: June 11, 2022
  • Uniform Plumbing Code, 2021 Edition - Effective: June 11, 2022 - Fixture Table
  • International Mechanical Code, 2021 Edition - Effective: June 11, 2022
  • International Fuel Gas Code, 2021 Edition - Effective: June 11, 2022
  • NFPA 99, Standard on Health Care Facilities (med gas), 2018 Edition - Effective: June 11, 2022
  • National Electrical Code, 2020 Edition - Effective: June 11, 2022
  • International Energy Conservation Code, 2021 Edition - Effective: June 11, 2022
  • American Society of Mechanical Engineers, Boiler and Pressure Vessel Code, 2021 Edition - Effective: November 6, 2021
  • American Society of Mechanical Engineers, publication CSD-1, Controls and Safety Devices for Automatically Fired Boilers, 2018 Edition - Effective: November 6, 2021
  • Safety Code for Elevators and Escalators, ASME A17.1, 2019 Edition,  - Effective: June 11, 2022
  • Safety Code for Existing Elevators and Escalators, ASME A17.3, 2017 Edition - Effective: June 11, 2022
    • The administrative rules refer to the 2018 edition of ASME A17.3; this is an error the correct edition is the A17.3-2017 edition.
  • Safety Standard for Platform Lifts and Stairway Chairlifts, ASME A18.1, 2017 Edition - Effective: June 11, 2022
  • International Swimming Pool and Spa Code, 2021 Edition - Effective: June 11, 2022
  • Wildland Urban Interface Code, 2021 Edition - Effective: June 11, 2022

NOTE:  All of the codes listed above are amended by Administrative Rules of Montana (ARM) Title 24, Chapter 301

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