Code Level
- Commercial Energy Code - 2021 IECC
- Residential Energy Code - 2021 IECC
Authority
Authorized by – None. Legislation established energy requirements for state-funded buildings only. Legislation will be required to adopt a mandatory statewide energy code. Local jurisdictions may adopt their own energy code. Numerous jurisdictions throughout the state have adopted an energy code; including most major municipalities such as the City of St. Louis, St. Louis County, Kansas City, Springfield, Independence and Columbia. The precise code edition enforced by the jurisdiction varies.
Oversight – None.
Code change process – Legislative. In Missouri, only the General Assembly is authorized to enact legislation to establish statewide building construction regulations and/or authorize a state agency to do so. However, there currently is no state regulatory agency authorized to promulgate, adopt or update construction codes on a statewide basis.
Code change cycle - None.
Compliance
Enforcement - Local jurisdictions are responsible for enforcing any building codes that they have adopted municipally. Below are the current energy codes for the top five jurisdictions by population.
Municipal Energy Codes
| Five Largest Jurisdictions in Missouri | Residential Energy Code | Commercial Energy Code |
| St. Louis County | 2015 IECC, slightly amended | 2015 IECC, slightly amended |
| Jackson County | 2003 IECC | 2003 IECC |
| Kansas City | 2012 IECC, moderately amended | 2012 IECC |
| St. Charles County | 2009 IECC, moderately amended | 2009 IECC |
| City of St. Louis | 2018 IECC. slightly amended | 2018 IECC |
Implementation/Compliance Studies – The Department of Economic Development has commissioned a study of statewide residential energy code compliance. A copy of the final report and results are forthcoming.
Primary Contacts
Missouri Department of Natural Resources, Division of Energy