IECC Energy Code Requirements
As of September 1, 2025, in compliance with House Bill 22-1362, Mesa County will begin enforcing the 2021 International Energy Conservation Code (IECC).
Residential
Review the following documents for residential plan submission and inspection requirements:
***For fillable forms please download and save or open in Microsoft Edge.
2021 IECC Equipment Sizing Policy
2021 IECC Residential Checklist
Colorado Model Electric and Solar Ready Code (CMESRC) Plan Review Residential Submittal Checklist
Additional information
For additional information, check out the IECC Energy Code Consultants free Wednesday Web Series.
For free, up-to-date energy references, energy training, and energy code info, visit the Office of Energy Efficiency and Renewable Energy's Building Energy Codes Program.