# Colorado — Which energy code each US state enforces for new homes: the IECC edition (or state equivalent) actually in force, with effective dates and amendments, from the state rules themselves

For Colorado, energy code in force is Colorado Model Low Energy and Carbon Code; no statewide residential requirement is local jurisdictions adopt under a state mandate, recorded from its source on 2026-08-18.

- **State:** Colorado _(verified: appears in the quote below)_
- **Energy code in force:** Colorado Model Low Energy and Carbon Code _(verified: appears in the quote below)_
- **No statewide residential requirement:** local jurisdictions adopt under a state mandate _(our reading, not quoted from the source)_

## What the source says

> State law requires local jurisdictions to adopt and enforce the Colorado Model Low Energy and Carbon Code upon updating any other building code.

## Source

- https://energyoffice.colorado.gov/building-energy-codes

Last verified: 2026-08-18. Review by: 2027-02-14.
Part of [Which energy code each US state enforces for new homes: the IECC edition (or state equivalent) actually in force, with effective dates and amendments, from the state rules themselves](https://referencesource.org/energy-code-adoption-by-state/).