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Montana Building Codes

Codes

Adoption Info

INCORPORATED UPDATES
2021 Building Codes

Rule: 24.301.131
Incorporation by Reference of International Building Code
effective June 11, 2022
Original document
Rule: 24.301.142
Modifications to the International Building Code
Applicable Only to the Department's Code Enforcement Program
effective June 11, 2022
Original document
Rule: 24.301.146
Modifications to the International Building Code
Applicable to Both the Department's and Local Government Code Enforcement Programs
effective June 11, 2022
Original document
Rule: 24.301.154
Incorporation by Reference of International Residential Code
effective June 10, 2022
Original document
Rule: 24.301.171
Incorporation by Reference of International Existing Building Code
effective June 11, 2022
Original document
Rule: 24.301.301
Incorporation by Reference of Uniform Plumbing Code
effective June 11, 2022
Original document
Rule: 24.301.172
Incorporation by Reference of International Mechanical Code
effective June 11, 2022
Original document
Rule: 24.301.173
Incorporation by Reference of International Fuel Gas Code
effective June 11, 2022
Original document
Rule: 24.301.161
Incorporation by Reference of International Energy Conservation Code
effective June 11, 2022
Original document
Rule: 24.301.181
Incorporation by Reference of International Wildland-urban Interface Code (IWUIC)
effective June 11, 2022
Original document
Rule: 24.301.175
Incorporation by Reference of International Swimming Pool and Spa Code (ISPSC)
effective June 11, 2022
Original document
Rule: 24.301.401
Incorporation by Reference of National Electrical Code
effective June 11, 2022
Original document
Rule: 24.301.411
Wiring Standards
effective June 11, 2022
Original document
Rule: 24.301.602
Incorporation by Reference of Elevator Code
effective June 11, 2022
Original document

2019 Building Codes

ARM, Rule: 24.301.161
Incorporation By Reference Of International Energy Conservation Code
effective February 13, 2021
Original document
ARM, Rule: 24.301.146
Modifications To The International Building Code
Applicable To Both The Department's And
Local Government Code Enforcement Programs
effective December 7, 2019
Original document
ARM, Rule: 24.301.154
Incorporation By Reference Of International Residential Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.171
Incorporation By Reference Of International Existing Building Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.172
Incorporation By Reference Of International Mechanical Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.173
Incorporation By Reference Of International Fuel Gas Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.181
Incorporation By Reference Of International Wildland-urban Interface Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.175
Incorporation By Reference Of International Swimming Pool And Spa Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.301
Incorporation By Reference Of Uniform Plumbing Code
effective December 7, 2019
Original document
ARM, Rule: 24.301.401
Incorporation By Reference Of National Electrical Code
effective December 7, 2019
Original document
ARM, Rule: 23.12.601
Adoption of The International Fire Code (2012 Edition)
effective December 27, 2013
Original document

2012 Building Codes

24.301.181
Incorporation by Reference of International Wildland-urban Interface Code (IWUIC)
effective February 20, 2016
Original document
24.301.175
Incorporation by Reference of International Swimming Pool and Spa Code (ISPSC)
effective January 9, 2016
Original document
24.301.131
Incorporation by Reference of International Building Code
effective November 7, 2014
Original document
24.301.154
Incorporation by Reference of International Residential Code
effective November 7, 2014
Original document
24.301.171
Incorporation by Reference of International Existing Building Code
effective November 7, 2014
Original document
24.301.172
Incorporation by Reference of International Mechanical Code
effective November 7, 2014
Original document
24.301.173
Incorporation by Reference of International Fuel Gas Code
effective November 7, 2014
Original document
24.301.161
Incorporation by Reference of International Energy Conservation Code
effective November 7, 2014
Original document
FURTHER INFORMATION

Montana Building Codes

The building codes of Montana adopt the the International Building Code 2021 (IBC 2021), International Residential Code 2021 (IRC 2021), International Existing Building Code 2021 (IEBC 2021), Uniform Plumbing Code 2021, International Mechanical Code 2021 (IMC 2021), International Fuel Gas Code 2021 (IFGC 2021), International Energy Conservation Code 2021 (IECC 2021), International Wildland-Urban Interface Code 2021 (IWUIC 2021), International Swimming Pool and Spa Code 2021 (ISPSC 2021), Accessible and Usable Buildings and Facilities, 2017, Standard for the Installation of Sprinkler Systems, 2019, National Electrical Code, 2020, National Fire Alarm and Signaling Code, 2019, Safety Code for Elevators and Escalators, 2019, and the Building Code Requirements for Structural Concrete 2019.

Montana building codes, including the fire and residential codes

Montana Agencies

Montana Department of Labor & Industry
Website: http://dli.mt.gov/
Address: 1315 Lockey Ave, Helena, MT 59601
P.O. Box: 1728, Helena, MT 59624
Email: dliquestions@mt.gov
Phone: (406) 444-2840

State Fire Marshal’s Office
Website: https://dojmt.gov/enforcement/investigations-bureau/fire-prevention/
Email: dojnfirs@mt.gov
Phone: (406) 750-2112