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Code Status: Montana

This page contains information about current energy codes in the state of Texas. Information for all 50 States is also available. Montana Code News.

Current State Codes

  • Residential Code: 2003 IECC with amendments, mandatory statewide; can use REScheck to show compliance.
  • Commercial Code: 2003 IECC with reference to ASHRAE 90.1-2001, mandatory statewide; can use COMcheck to show compliance.
  • Code Change Cycle: Three-year code review/change cycle. Most recent update was adopted on September 3rd, 2004.
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Code Adoption & Change Process

Process Type: Regulatory

Code Change Process: The energy codes are reviewed on a three-year cycle corresponding to the adoption of new versions of the International Code Conference (ICC) Uniform Codes. Proposed changes are submitted to the Building Codes Bureau.

State Code History: Montana first adopted a statewide building code in 1972 with the adoption of the ICBO Uniform Codes. The state's first energy code was the 1983 Model Energy Code (MEC). Montana adopted the appendix of Chapter 53 (Energy) referenced in the 1985 Uniform Building Code, which referenced the 1983 MEC.

Montana adopted several of the MEC editions and supplements in the late 1980s and early 1990s, including the 1991 MEC with reference the first Standard 90.1 edition, ASHRAE 90.1-1989.

The state adopted the 2003 IECC with minimal changes as the statewide energy code on September 3, 2004. Effective January 26, 2007, Montana has adopted the 2006 version of all the other I-Codes (including the IBC and IRC), but not the IECC.

After beginning to the process to adopt the 2006 IECC during the current update cycle, an introductory meeting was held on November 6, 2008 by the Montana Building Codes Bureau to ask members of the building codes community about restarting to the process to adopt the 2009 IECC. The meeting outcome was to begin moving forward with the 2009 IECC with further discussion about adopting even more efficient codes. The code process is estimated to take six months after the International Code Council publishes its new codes in March 2009. An effective date in early fall 2009 is anticipated if the code if officially adopted.

Montana Code Chronology

Enactment Date

Effective Date

Description

1972

ICBO Uniform Codes

1986

1983 Model Energy Code (MEC)

1989

1986 MEC

1992

1991 MEC supplement (with reference to AHSRAE 90.1-1989)

1994

1992 MEC supplement (with amendments)

1996

1993 MEC

July 2004

Sept 2004

Adopted 2003 IECC

Fall 2009?

???

Begin adoption process for 2009 IECC in March 2009

Source: Northwest Energy Efficiency Alliance (April 2008)

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Energy Consumption Estimates

The consumption estimates below are derived from the total end use of residential and commercial energy consumption in the United States in 2005, and are not limited to energy consumption based on building code-related factors. Source: U.S. Energy Information Administration.

  • Residential Sector: 75.8 Trillion BTU
  • Commercial Sector: 67.5 Trillion BTU
  • Total Energy Consumption: 143.3 Trillion BTU
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Construction Activity

Residential:

  • Population (2000 US Census)1: 902,195
  • Total Housing Units2: 417,106
  • 2004 New Housing Units Authorized by Permit (Privately Owned)3:
    • total units: 5,475
    • 1 unit: 3,941
    • 2 units: 268
    • 3 and 4 units: 377
    • 5+ units: 889
    • structures of 5+ units: 74

References:

  1. http://www.census.gov/population/cen2000/phc-t2/tab01.xls
  2. http://www.census.gov/population/estimates/housing/sthuhh1.txt
  3. http://www.census.gov/const/C40/Table2/20k_t2yu200412.txt
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Web Links

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State Energy Code Contacts

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