Colorado residential energy code

Colorado residential energy code (No single statewide residential code; local governments adopt)

As of 2026-10-22. DOE's Building Energy Codes Program (energycodes.gov) lags state adoption, so where a state's own rule was read it governs and DOE's differing figure is noted. Residential means one- and two-family dwellings and townhouses. Local amendments can apply; check the code body before relying on a section.

Key features

Code in force: No single statewide residential code; local governments adopt
Adoption: Home rule: no mandatory statewide residential energy code; local governments adopt their own
A 2021 IECC floor and a model code from 2026-07-01 are reported under HB22-1362, from search snippets; the state page was not opened. DOE lists a 2018-equivalent home-rule state.
Provisional: a state source was not opened for every point above; DOE energycodes.gov is cited where noted.

Governing body

Local governments in Colorado

Region

Applies to

General contracting HVAC Insulation Electrical Windows & doors

Visit Local governments in Colorado ↗