State

State
Current Commercial Code
Current Residential Code
Next Code Update
Alabama 2015 Alabama Commercial Energy Code
Based on ASHRAE 90.1 2013
effective 1/1/2016		 2015 Alabama Residential Energy Code
Based on the 2015 IECC with state-specific amendments
Effective 10/1/2016
Alaska No statewide energy code
Alaska Building Energy Efficiency Standard (BEES) (2012 IECC, ASHRAE 62.2 2010, Alaska-specific amendments to both)
passed 4/3/13; effective 7/1/13		 No statewide energy code
Alaska Building Energy Efficiency Standard (BEES) (2012 IECC, ASHRAE 62.2 2010, Alaska-specific amendments to both)
passed 4/3/13; effective 7/1/13
Arizona No statewide energy code No statewide energy code
Arkansas Arkansas Energy Code For New Building Construction (based on 2009 IECC with State of Arkansas Supplements and Amendments)
passed 1/1/14; effective 1/1/15		 Arkansas Energy Code For New Building Construction (based on 2009 IECC with State of Arkansas Supplements and Amendments)
passed 1/1/14; effective 1/1/15
California 2016 Building Energy Efficiency Standards (Title 24)
Meets or exceeds the stringency of ASHRAE 90.1-2013
Effective 1/1/2017		 2016 Building Energy Efficiency Standards (Title 24)
Meets or exceeds the stringency of the 2015 IECC
Effective 1/1/2017
Colorado No statewide energy code No statewide energy code
Connecticut 2016 Connecticut State Building Code with weakening amendments, based on the 2012 IECC
Effective 10/1/2016		 2016 Connecticut State Building Code with weakening amendments, based on the 2012 IECC
Effective 10/1/2016
Delaware Delaware State Energy Code (based on 2012 IECC with amendments and ASHRAE 90.1 2010) Delaware State Energy Code (based on 2012 IECC with amendments) No update is scheduled, but the Delaware Energy Office reviews the Delaware State Energy Code every three years for potential updates to the most recent versions of the IECC and ASHRAE Standard 90.1.
District of Columbia 2013 DC Construction Codes
Based on the 2012 IECC, ASHRAE 90.1-2010
Passed 3/20/2014, effective 3/28/2014		 2013 DC Construction Codes
Based on the 2012 IECC with minor amendments
Passed 3/20/2014, effective 3/28/2014		 In October 2015, the Construction Codes Coordinating Board (CCCB) commenced a new code development cycle to review the 2015 I-codes.
Florida 2014 Florida Building Code, Energy Conservation (FBCEC), based on the 2012 IECC with Florida-specific amendments; provides ASHRAE Standard 90.1-2010 as a deemed-to-comply option.
Passed 1/1/2015; effective 6/30/2015		 2014 Florida Building Code, Energy Conservation (FBCEC), based on the 2012 IECC with Florida-specific amendments; due to Senate Bill 2502-A, mandatory blower door provisions will not take effective until July 1, 2017.
Passed 1/1/2015; effective 6/30/2015The Florida State Legislature has passed HB 535, modifying the state’s energy code by adoption Section 406 of the 2015 IECC. The Energy Rating Index (ERI) score for the state cannot exceed 58 for either climate zone. This change went into effect on July 1, 2016.		 The 6th edition of the Florida Building Code is expected to take effect at the end of 2017, preceded by periods for proposed amendments and public comments. The Florida Building Commission will consider Technical Advisory Committee (TAC) recommendations and comments on public comments during a rule development workshop conducted during the August Commission meeting, and conduct a rule adoption hearing on the final version of the Code on June 8, 2017. The TACs will review proposed amendments after the code’s effective date of December 31, 2017, if needed.
Georgia 2011 Georgia State Minimum Standard Energy Code (2009 IECC referencing ASHRAE 90.1-2007 with Georgia-specific strengthening amendments) 2011 Georgia State Minimum Standard Energy Code (2009 IECC with Georgia-specific strengthening amendments) The tentative effective date for the 2015 IECC and ASHRAE 90.1-2013 with any necessary supplements and amendments is January 1, 2018.

Previously, the DCA had decided that the state of Georgia should adopt the 2018 suite of I-codes in lieu of the 2015 codes. See A Statement on Codes from the DCA, page 1.
Hawaii 2015 IECC with state-specific weakening amendments
Effective 7/1/2015		 2015 IECC with state-specific weakening amendments
Effective 7/1/2015
Idaho 2012 IECC as written 2012 IECC with state-specific weakening amendments The Idaho Division of Building Safety has adopted an administrative rule updating the commercial energy code to be based on the 2015 IECC with amendments. This rule is now pending review by the 2017 Idaho State Legislature for final approval. The complete text of the proposed rule was published in the October 5, 2016 Idaho Administrative Bulletin, Vol. 16-10, pages 81-89.
Illinois 2015 IECC and ASHRAE 90.1-2013 with state-specific amendments
effective 1/1/16		 2015 IECC with state-specific amendments
effective 1/1/16		 The next code update for Illinois depends on the publication date of the 2018 IECC, which is still in preliminary code development stages. Illinois’ next code update should not take effect until at least early 2019.
Indiana 2010 Indiana Energy Conservation Code, based on ASHRAE 90.1-2007 with state-specific amendments
passed 12/23/09, effective 5/6/10		 2005 Indiana Residential Code with 2011 Amendments, based on the 2009 IRC Chapter 11 with Indiana amendments that meet the stringency of Chapter 4 of the 2009 IECC
passed 11/2/11, effective 4/5/12
Iowa Iowa State Energy Code, based on the 2012 IECC with state-specific amendments
Passed 3/12/2014, effective 6/1/2014		 Iowa State Energy Code, based on the 2012 IECC with state-specific amendments
passed 3/12/2014, effective 6/1/2014		 Iowa is in the process of adopting the 2015 I-codes.
Kansas 2006 IECC, voluntary only
Effective 4/10/2007		 No statewide code; a significant number of jurisdictions have adopted an energy code for residential construction
Kentucky 2013 Kentucky Building Code, based on the 2012 IECC; ASHRAE 90.1-2010 is still an acceptable compliance path as allowed by section C401.2 in the 2012 IECC
Passed 2/1/2014; effective 10/1/2014		 2013 Kentucky Residential Code (KRC), based on the 2012 IRC with state-specific amendments; equivalent to the 2009 IECC
passed 2/1/2014; effective 10/1/2014
Louisiana ASHRAE 90.1-2007 and the 2009 IECC
passed 7/20/2011; effective 7/20/2011		 2009 IRC Chapter 11
passed 1/1/2015; effective 6/30/2015		 As of March 2017, there is a draft rule to adopt the 2015 IBC, including the 2015 IECC for commercial buildings.
Maine Maine Uniform Building and Energy Code (MUBEC), based on the 2009 IECC and ASHRAE 90.1-2007
Passed 4/24/2008, effective 6/1/2010		 Maine Uniform Building and Energy Code (MUBEC), based on the 2009 IECC
Passed 4/24/2008, effective 6/1/2010		 The Technical Codes and Standards Board is currently working on the adoption of the 2015 IECC for commercial buildings. The 2009 IECC will continue to apply to residential buildings. As of February 2017, the board is waiting for a return of Rules for Rule-Making from the Governor’s Office and will have a Public Hearing as soon as they receive them back.
Maryland Maryland Building Performance Standards, based on the 2015 IECC
Effective January 1, 2015		 Maryland Building Performance Standards, based on the 2015 IECC
Effective January 1, 2015
Massachusetts 780 CMR Chapter 13
Based on the 2015 IECC and ASHRAE 90.1-2013 with amendments
Passed 7/28/2016, effective 8/12/2016*		 780 CMR Chapter 51, Section 11
Based on the 2015 IECC with amendments
Passed 7/28/2016, effective 8/12/2016*
Michigan 2009 Michigan Uniform Energy Code (MUEC), Part 10a
Based on the 2009 IECC and ASHRAE 90.1-2007
Passed 11/8/2010, effective 3/9/2011		 2015 Michigan Residential Code, Chapter 11
Based on 2015 IECC with state-specific amendments
Effective 2/8/2016		 According to the 2015-2016 rules status chart, the new commercial energy code will be effective by early 2017.
Minnesota Minnesota Commercial State Building Code, Chapter 1323, based on the 2012 IECC with state-specific amendments; ASHRAE 90.1-2010 is also a compliance option.
passed 8/18/14, effective 6/2/15		 Minnesota Residential State Building Code, based on the 2012 IECC with state-specific amendments.
passed 8/18/14, effective 2/14/15
Mississippi ASHRAE 90.1-2010
passed 4/23/2013; effective 7/1/2013		 No mandatory code. ASHRAE 90-1975 applies to residential buildings on a voluntary basis.
Missouri No mandatory or voluntary statewide energy code for private commercial construction. No mandatory or voluntary statewide energy code for private residential construction.
Montana 2012 IECC with Montana amendments or ASHRAE 90.1-2010
Passed 9/20/2013, effective 11/7/2014		 2012 IECC with Montana amendments
Passed 9/20/2013, effective 11/7/2014
Nebraska 2011 Nebraska Energy Code, based on the 2009 IECC with NE administrative amendments; ASHRAE 90.1-2007 is an acceptable compliance path through Chapter 5 of the 2009 IECC.
Passed 4/14/2011, effective 8/27/2011		 2011 Nebraska Energy Code, based on the 2009 IECC with NE administrative amendments
Passed 4/14/2011, effective 8/27/2011		 The Nebraska Energy Office (NEO) has plans to review the latest editions of the model codes, but the likely timeline for this process is not clear.
Nevada 2012 IECC with Nevada amendments; ASHRAE 90.1-2010 as an acceptable compliance path through Chapter 5 of the 2012 IECC.
Passed 5/1/2014, effective 7/1/2015		 2012 IECC with Nevada amendments
Passed 5/1/2014, effective 7/1/2015		 Keeping with the historical three-year cycle, Nevada should adopt the 2015 IECC sometime in 2018.
New Hampshire 2009 IECC with references to ASHRAE 90.1-2007
Passed 12/11/2009, effective 4/1/2010		 2009 IECC with New Hampshire amendments
Passed 12/11/2009, effective 4/1/2010		 In August 2015, the New Hampshire State Building Code Review Board (BCRB) held a public hearing on possible revisions to the 2015 IECC. However, in early 2016, the New Hampshire House voted down HB 1282, which would have adopted a (significantly weakened) version of the 2015 IECC. In the meantime, jurisdictions can adopt updated energy codes on their own.
New Jersey Uniform Construction Code (NJAC 5:23-3.18)
Based on ASHRAE 90.1-2013
Passed 9/21/2015, effective 3/21/2016		 Uniform Construction Code (NJAC 5:23-3.18)
Based on the 2015 IECC
Passed 9/21/2015, effective 3/21/2016
New Mexico 2009 New Mexico Energy Conservation Code (NMECC)
Based on the 2009 IECC with New Mexico amendments; ASHRAE 90.1-2010 is an acceptable compliance path through Chapter 5 of the 2009 IECC
Passed 6/10/2011, effective 1/1/2012		 2009 New Mexico Energy Conservation Code (NMECC)
Based on the 2009 IECC with New Mexico amendments
Passed 6/10/2011, effective 1/1/2012
New York Energy Conservation Construction Code of New York State (ECCCNYS), based on the 2015 IECC and ASHRAE 90.1-2013 as modified by the 2016 Supplement
Effective 10/3/2016		 Energy Conservation Construction Code of New York State (ECCCNYS), based on the 2015 IECC as modified by the 2016 Supplement
Effective 10/3/2016The new residential energy code included Section R406 of the 2015 IECC, the Energy Rating Index (ERI) compliance option. ERI scores are not to exceed 55 for Climate Zone 5 and 54 for Climate Zone 6.
North Carolina 2012 North Carolina Energy Conservation Code (based on the 2009 IECC with substantial strengthening amendments; ASHRAE 90.1-2010 is an acceptable compliance path through chapter 5 of the 2009 IECC)
Passed 1/23/11; effective 1/1/12		 2012 North Carolina Energy Conservation Code (based on the 2009 IECC with substantial strengthening amendments
Passed 1/23/11; effective 1/1/12		 The base documents for the 2018 NC Codes are the 2015 suite of I-codes, including the 2015 IECC The 2018 North Carolina Energy Conservation Code (NCECC) as currently proposed is available here. The tentative effective date for this code would be January 1, 2019.
North Dakota North Dakota State Building Code; energy provisions are voluntary only and based on the 2009 IECC.
Effective 1/1/2014		 North Dakota State Building Code; energy provisions are voluntary only and based on the 2009 IECC.
Effective 1/1/2014
Ohio Ohio Building Code (OBC) Chapter 13, based on the 2012 IECC and ASHRAE Standard 90.1-2010 with amendments.
Adopted 9/30/2016, effective 1/1/2017		 2013 Residential Code of Ohio, based on the 2009 IRC Chapter 11; includes the 2009 IECC and two state-specific alternatives (RCO Sections 1101 through 1104; RCO Section 1105)
Passed 5/28/2012, effective 1/1/2013
Oklahoma Oklahoma Uniform Building Code
Based on the 2006 IBC Chapter 13 (2006 IECC by reference)
Passed 5/27/2011, effective 7/15/2011		 Oklahoma Uniform Building Code
Based on the 2009 IRC Chapter 11 with Oklahoma amendments
Passed 5/27/2011, effective 7/15/2011		 Oklahoma Uniform Building Code
Based on the 2015 IRC Chapter 11 with Oklahoma amendments, equivalent to the 2009 IRC
Effective 11/1/2016
Oregon 2014 Oregon Energy Efficiency Specialty Code (OEESC)
State-developed code based on ASHRAE 90.1-2010
Passed 5/11/14, effective 7/1/14		 2014 Oregon Residential Specialty Code (ORSC)
State-developed code, more stringent than the 2009 IECC
Passed 5/11/14, effective 10/1/14		 The Building Codes Division anticipates the next ORSC review year, 2017, to be a major update that will include a review of the national model code.
Pennsylvania Pennsylvania Uniform Construction Code, based on the 2009 IECC with reference to ASHRAE 90.1-2007
Passed 12/10/2009, effective 12/31/2009		 Pennsylvania Uniform Construction Code, based on the 2009 IECC, 2009 IRC, and state-specific alternative energy code
Passed 12/10/2009, effective 12/31/2009
Rhode Island SBC-8 State Energy Conservation Code
Based on the 2012 IECC and ASHRAE 90.1-2010
Effective July 1, 2013		 Rhode Island One- and Two-Family Dwelling Code
Based on the 2012 IECC with state-specific amendments
Passed 7/1/2013, effective 10/1/2013
South Carolina South Carolina Energy Standard
The commercial provisions of the South Carolina Energy Standard reference the 2009 IECC, including that code’s reference to ASHRAE Standard 90.1-2007 as an alternative compliance path.
Passed 4/2/2012; effective 1/1/2013		 South Carolina Energy Standard
The residential provisions of the South Carolina Energy Standard reference the 2009 IECC
Passed 4/2/2012; effective 1/1/2013
South Dakota 2015 IBC, amended at the discretion of the local governing body.
Effective 7/15/2015		 South Dakota Residential Energy Conservation Standard
Based on the 2009 IECC, voluntary only
Passed 3/15/2011, effective 7/1/2011
Tennessee 2012 IECC
Adopted 5/3/2016, effective 8/4/2016The provisions of the 2006 IECC shall continue to apply to the following occupancy classifications as defined by the 2012 IBC:

  1. Moderate-hazard factory industrial, Group F-1;
  2. Low-hazard factory industrial, Group F-2;
  3. Moderate-hazard storage, Group S-1; and
  4. Low-hazard storage, Group S-2;
 2009 IECC with amendments
Adopted 11/4/2016; effective 2/2/2017Amendments to the residential code include:

  • Section 402.4.2.1, Testing option has been removed.
  • Section 403.2.2, Sealing Mandatory has been removed.
  • Table N1102.1, Insulation and Fenestration Requirements by Component, has been amended by adding certain exceptions for log walls.
Texas 2015 IECC
Effective 11/1/2016This code applies to commercial, industrial, and residential buildings over three stories.		 Texas Building Energy Performance Standards for Single-Family Construction
Based on the 2015 IRC, Chapter 11
Passed 6/16/2015, effective 9/1/2016
This code applies to residential (one- and two-family residences of three stories or less above grade) construction in Texas.
Utah 2015 IECC as written, ASHRAE 90.1-2013
Passed 3/24/2016, effective 7/1/2016		 2015 IECC with significant state-specific amendments, including provisions from the 2006, 2009, and 2012 IECC
Passed 3/24/2016, effective 7/1/2016
Vermont Commercial Building Energy Standards (CBES)
Based on the 2015 IECC , includes alternative compliance path of ASHRAE 90.1 2013 with some Vermont specific requirements
Effective 3/1/2015		 Residential Building Energy Standards (RBES)
Based on the 2015 IECC
Effective 3/1/2015
Virginia Virginia Uniform Statewide Building Code (USBC), 2012 Edition
Based on the 2012 IECC with state-specific amendments
passed 6/1/2014, effective 7/14/2014		 Virginia Uniform Statewide Building Code (USBC), 2012 Edition
Based on the 2012 IECC with significant weakening amendments
passed 6/1/2014, effective 7/14/2014		 The Department of Housing and Community Development (DHCD) plans to have the 2015 edition of the USBC effective by March 2018, pending any petitions received during the 30-day comment period following the publishing of the final regulations.
Washington 2015 Washington State Energy Code (WSEC)
Based on the 2015 IECC with state-specific amendments
Passed 1/6/2016, effective 7/1/2016		 2015 Washington State Energy Code (WSEC)
Based on 2015 IECC with state-specific amendments
Passed 1/6/2016, effective 7/1/2016		 The next group of code change proposals is due March 1, 2017.
West Virginia ASHRAE 90.1-2007
Passed 7/18/2012, effective 9/1/2013		 2009 IECC
Passed 7/18/2012, effective 9/1/2013
Wisconsin 2011 Wisconsin Commercial Building Code
Based on the 2009 IECC
passed 7/1/2011, effective 9/1/2011		 Wisconsin Uniform Dwelling Code, Chapter SPS 322
Based on the 2009 IECC
Passed 12/1/2015, effective 1/1/2016		 The Wisconsin Commercial Building Code Council is currently reviewing the 2012 and 2015 IECC as well as ASHRAE 90.1.
Wyoming No statewide code No statewide code
American Samoa No energy code for private sector construction No energy code for private sector construction
Guam 2009 IBC with reference to 2009 IECC 2009 IBC with reference to 2009 IRC
Northern Mariana Islands Tropical Model Energy Code, equivalent to the 2003 IECC Tropical Model Energy Code, equivalent to the 2003 IECC
Puerto Rico 2011 Puerto Rico Building Code 2011 Puerto Rico Building Code
Virgin Islands 2009 IECC 2009 IECC