Residential Energy Code

Idaho's current residential energy code, effective January 2015, is based on the 2012 International Energy Conservation Code with state-specific amendments. 

The residential energy code applies to new construction, as well as additions, alterations, renovations, and repairs of existing structures. Residential buildings include one- and two-family homes; apartments, boarding houses, dormitories, and other buildings with two (2) or more permanent dwelling units; and residential care and assisted living facilities with three (3) or less stories, among others.

Residential Energy Code Requirements

The residential energy code has provisions pertaining to a structure's thermal envelope, mechanical system, and lighting system. The code includes prescriptive, mandatory code requirements as well as performance options that allow a home to be built to a homeowner or builder's desires while also maintaining an ideal level of energy efficiency. 

The current residential code is based on the 2012 International Energy Conservation Code (IECC) with amendments. Full versions of the IECC are available on the International Code Council's website. Amendments to Idaho's residential energy code can be found in the 2016 Idaho Statutes and Administrative Rules. 

Residential Resources

Support for the residential sections of the Idaho Energy Code is available free of charge to jurisdictions, consumers, homeowners, code officials, builders, contractors, and other building professionals. 

Resources, including frequently asked questions and popular websites, are readily available, with additional resources added regularly.

Energy Code Assistance

For information on the residential energy code, training events, energy efficiency programs, or how to get involved, please contact us.