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Home > News > State Energy Efficiency Index: Building Codes
State Energy Efficiency Index: Building Codes
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Alabama
- Residential Code: Alabama uses the Residential Energy Code for Alabama (RECA 2000), which is basically equivalent to the 2000 IECC, as a voluntary standard.
- Commercial Code: The Alabama Building Energy Conservation Code (ABECC) is a mandatory building code for state government buildings. The code is based on ASHRAE/IESNA 90.1 – 2001.
- Click here for more information.
http://www.energycodes.gov/implement/state_codes/state_status.php?state_AB=AL
Alaska
Arizona
- Residential Code: Arizona has made the 2000 IECC codes voluntary.
- Commercial Code: ASHRAE/IESNA 90.1-1999 is mandatory for state-owned and state-funded buildings only.
- Click here for more information.
http://www.azleg.state.az.us/ars/41/01511.htm
Arkansas
California
- Residential Code: California’s state-developed code, found in the California Code of Regulations, Title 24, Part 6, exceeds 2000 IECC, and is mandatory statewide.
- Commercial Code: California’s state-developed code, found in the California Code of Regulations, Title 24, Part 6, meets or exceeds ASHRAE/IESNA 90.1-2001, and is mandatory statewide.
- Click here for more information.
http://www.bsc.ca.gov/title_24/t24_2001tried.html
Colorado
- Executive Order 14, released in July of 2005, directs the Executive Directors of all state agencies and departments to evaluate their business operations and to develop and implement policies and procedures to promote environmentally sustainable and economically efficient practices including, but not limiting to, adopting the U.S. Green Buildings Council’s LEED Green Building Rating System for existing buildings and new construction, and initiating an energy management program to monitor and manage utility usage and costs, as resources become available. In addition, it calls for the creation of a Colorado Greening Government Coordinating Council including representatives from each state agency and department.
Click here for more information.
Residential Code: The 1993 Model Energy Code for hotels, motels and multifamily dwellings is mandatory in any area that does not adopt or enforce local codes.
- Commercial Code: Voluntary state provisions based on 2003 IECC/ASHRAE 90.1-2001
- Click here for more information.
http://www.coloradoenergy.org/codes/colorado.asp
Connecticut
Delaware
- Residential Code: IECC 2000 is the mandatory code statewide for all homes 3 stories or less in height. Standards for all other residential buildings must follow the 2001 supplement to IECC 2000, referencing ASHRAE 90.1-1999.
- Commercial Code: ASHRAE 90.1-1999, mandatory statewide.
- Click here for more information.
http://www.delcode.state.de.us/title16/c076/index.htm
District of Columbia
Florida
- Residential Code: State developed code, Chapter 13 of the Florida Building Code, which exceeds 2000 IECC and is mandatory statewide.
- Commercial Code: State developed code, Chapter 13 of the Florida Building Code, which meets or exceeds ASHRAE 90.1-2001, and is mandatory statewide.
- Click here for more information.
http://www2.iccsafe.org/florida_building_code/btocib.htm#CHAPTER%2013
Georgia
Hawaii
- Residential Code: The counties of Honolulu and Maui have a residential energy code in place applying to all new construction and additions over 100 sq. ft. to additions. The code is unique to Hawaii, requiring R-19 or equivalent in roofs. The code allows five different paths to achieving R-19 equivalency, including the use of radiant barriers, cool roofs and solar-powered exhaust fans.
The County of Hawaii requires R-19 roofs and R-11 walls in homes designed for central air conditioning. The Hawaii Model Energy Code exceeds 1995 MEC, voluntary statewide.
- Commercial Code: The counties of Honolulu, Kauai and Maui model their commercial building energy code on ASHRAE 90.1-1999.
The County of Hawaii models its code on ASHRAE/IESNA 90.1-1989.
- Click here for more information.
Honolulu County: www.co.honolulu.hi.us.us/refs/roh/32a
Code-Related Information: http://www.state.hi.us/dbedt/ert/model_ec.html
- Established in 2001, the Hawaii BuiltGreen™ (HBG) Program assists architects and builders design and build energy and resource efficient homes in Hawaii. The program includes workshops and technical assistance, and a self-certifying checklist and user guide. Homes are rated from one to three stars according to the total number of points achieved on the checklist. HBG is a public/private partnership of local government, Building Industry Association of Hawaii, builders, designers, suppliers, utility companies, and the University of Hawaii.
- Click here for more information.
www.hawaii.gov/dbedt/ert/builtgreen.html
www.bia-hawaii.com/subpage.asp?section=70
Idaho
Illinois
- Residential Code: None mandated statewide.
- Commercial Code: The Energy Efficient Commercial Building Act adopted the IECC/ASHRAE 90.1-1999 Standard & the 2001 supplement to the Code, with some modifications based on distinctive conditions in Illinois.
- Click here for more information.
http://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=093-0936
Indiana
Iowa
Kansas
- Residential Code: No Statewide Standards
- Commercial Code: IECC 2006
Kentucky
- Residential Code: 2002 KY Residential Code, 2000 IECC external envelope requirements, mandatory statewide.
- Commercial Code: Kentucky Building Code, referencing the 2003 IECC, mandatory statewide.
- Click here for more information.
http://hbc.ppr.ky.gov/BCE.htm
Louisiana
Maine
Maryland
Massachusetts
- Residential Energy Code: The Massachusetts state building code, based on the 1995 Model Energy Code, with state-specific amendments, is mandatory state-wide.
- Commercial Energy Code: The Massachusetts state building code, based on ASHRAE/IESNA 90.1-1999, 2000 IECC with state-specific amendments, is mandatory state-wide.
- Click here for more information.
http://www.mass.gov/bbrs/energy.htm
Michigan
Minnesota
- Residential Code: The Minnesota State Energy Code, which exceeds the 2003 IECC, is mandatory statewide.
- Commercial Code: The Minnesota State Energy Code exceeds ASHRAE/IESNA 90.1-1989, and is mandatory statewide.
- Click here for more information.
http://www.buildingcodes.admin.state.mn.us/
Mississippi
Missouri
- Residential: None statewide, although state-owned residential buildings must comply with the latest edition of the Model Energy Code or ANSI/ASHRAE Standard 90.2-1993.
- Commercial: None statewide, although state-owned buildings must comply with ASHRAE/IESNA 90.1-1989.
- Click here for more information.
http://www.moga.state.mo.us/statutes/C008.HTM
Montana
Nebraska
Nevada
- Residential: 1986 Model Energy Code with state amendments is the minimum statewide. Reno, Washoe County and Carson City use the 2003 IECC.
- Commercial: 1986 Model Energy Code with state amendments is the minimum statewide. State-owned facilities must comply with the most current version of ASHRAE Standard 90.1. Reno, Washoe County and Carson City use the 2003 IECC.
- Click here for more information.
http://www.natresnet.org/nevada/mec.htm
New Hampshire
New Jersey
- Residential: 1995 Model Energy Code is mandatory statewide.
- Commercial: ASHRAE/IESNA 90.1-1999 is mandatory statewide.
- Click here for more information.
http://www.state.nj.us/dca/codes/
New Mexico
- Residential: 2003 IECC is mandatory statewide.
- Commercial: 2003 IECC is mandatory statewide.
- Click here for more information.
http://www.emnrd.state.nm.us/ecmd/html/codes.htm
- Executive Order 1, Released in January 2006 orders all Executive Branch state agencies to adopt the U.S. Green Building Council's LEED rating system to achieve various energy conservation goals for different types of state buildings.
New York
- Residential: A state-developed code based on the 2000 IECC model with 2001 supplements is mandatory statewide.
- Commercial: A state-developed code based on the 2000 IECC model with 2001 supplements, which include ASHRAE/IESNA 90.1-1999, is mandatory statewide.
- Click here for more information.
http://www.dos.state.ny.us/code/energycode/nyenergycode.htm
North Carolina
- Residential: A state-developed code modeled on the 2000 IECC is mandatory statewide. Chapter 11 of the 2000 IRC is also acceptable, when North Carolina amendments are included.
- Commercial: A state-developed code modeled on the 2000 IECC with North Carolina amendments that include ASHRAE/IESNA 90.1-1999 is mandatory statewide.
- Click here for more information.
http://www.ncdoi.com/OSFM/Home/Marshal.asp?PARAMSection=sidEngineeringCode
North Dakota
Ohio
Oklahoma
- Residential: The 1998 IECC is mandatory for jurisdictions that do not adopt their own code, and for facilities owned or leased by the state.
- Commercial: ASHRAE/IESNA 90.1-1989 is mandatory for jurisdictions that do not adopt their own code, and for facilities owned or leased by the state.
- Click here for more information.
http://www.energycodes.gov/implement/state_codes/state_status.php?state_AB=OK
Oregon
- Residential: A state-developed code, which is more stringent that the 2000 IECC, is mandatory state-wide.
- Commercial: The state-developed Uniform Building Code, which is more stringent than ASHRAE/IESNA 90.1-1999, is mandatory statewide.
- Click here for more information.
http://www.oregonbcd.org/
Pennsylvania
Rhode Island
South Carolina
- Residential: The 2003 IECC is mandatory statewide.
- Commercial: ASHRAE 90.1-2001 is mandatory statewide, although the State Engineer’s Office and the South Carolina Department of Education have adopted the ASHRAE 90.1-1999 as the energy code for state buildings and schools and buildings under their jurisdiction.
- Click here for more information.
http://www.llr.state.sc.us/POL/BCC-Council
South Dakota
- Currently, there are no building codes in South Dakota.
Tennessee
Texas
Utah
Vermont
- Residential: The Vermont Residential Building Energy Standard (RBES) is based on the 2000 IECC with state specific amendments, and is mandatory statewide.
- Commercial: 2001 Vermont Guidelines for Energy Efficiency Commercial Construction, based on the 2000 IECC with amendments to incorporate and exceed ASHRAE/IESNA 90.1-1999, are mandatory for state-funded new construction, ACT 250 projects and within the City of Burlington. The building codes are voluntary elsewhere.
- Click here for more information.
http://www.energycodes.gov/implement/state_codes/state_status.php?state_AB=VT
- In June, 2005 Vermont established new commercial building codes based on ASHRAE 90.1-2001.
- Click here for more information.
http://www.leg.state.vt.us/docs/legdoc.cfm?URL=/docs/2006/acts/ACT061.HTM%20
Virginia
- Residential: 2000 IECC and International Residential Code for One- and Two-Family Dwellings are mandatory statewide.
- Commercial: ASHRAE 90.1-1999 is mandatory statewide.
- Click here for more information.
http://www.vbcoa.org/
Washington
West Virginia
Wisconsin
- Residential: The state-developed code (COMM 22) meets or exceeds the 1995 Model Energy Code for one or two-family dwellings. Multi-family dwellings must comply with the 2000 IECC. Both codes are mandatory statewide.
- Commercial: The 2000 IECC is mandatory.
- Click here for more information.
http://www.commerce.state.wi.us/SB/SB-DivCodesListing.html
- Legislation signed in March 2006 requires the Department of Administration to annually review and revise energy-efficiency standards for equipment installed under state construction projects. It also directs the Department of Commerce to upgrade the Energy Conservation Code to refer to the IECC, and requires the code to be reviewed every 3 years.
- Click here for more information. http://www.legis.state.wi.us/2005/data/SB-459.pdf
Wyoming
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