Building Energy Code

June 18, 2023


In November of 2015, the Commission adopted the 2015 International Building Code (IBC) with amendments. The Commission did not adopt the 2012 International Energy Conservation Code (IECC) as part of this revision.

Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more detailed information about building energy codes, visit the DOE and BCAP websites.

In 2009 S.B. 1182 created the Oklahoma Uniform Building Code Commission. The 11-member Commission was given the power to conduct rulemaking processes to adopt new building codes. The codes adopted by the Commission must be approved by the Legislature before they can take effect. If the Legislature fails to act on the recommended code, it will take effect by default.

The Commission recommended a residential code based on the 2009 IRC with Oklahoma amendments in March 2011, and it took effect July 2011. The Commission recommended a commercial code based on the 2009 IECC with Oklahoma amendments which took effect in November 2012. Local governments would be allowed to adopt "higher" standards than those recommended by the Commission.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: Oklahoma
Incentive Type: Building Energy Code
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Comprehensive Measures/Whole Building
Residential Code: 2009 IRC
Commercial Code: 2006 IECC and ASHRAE 90.1-2003.
Code Change Cycle: No set schedule. Most recent change was effective November 1, 2016.


Name: 59 O.S. § 1000.20, et seq.
Date Enacted: 6/2/2009


Name: Rhonda Harding-Hill
Organization: Oklahoma Department of Commerce
Address: 900 N. Stiles Ave.
Oklahoma City OK 73104-3234
Phone: (405) 815-5126

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.