2022 Chicago Energy Transformation Code

October 18, 2022

Updated October 31, 2022

For building permit applications started on or after November 1, 2022, compliance with the 2022 Chicago Energy Transformation Code is mandatory, with limited exceptions for phased permitting and revision permits. The 2022 Chicago Energy Transformation Code is based on the 2021 International Energy Conservation Code (IECC) with local amendments. Certain provisions of the 2022 Chicago Energy Transformation Code, specified in Chapters C6 and R6, apply to projects where the building permit application is started on or after January 1, 2023.

For building permit application types required to submit architectural plans, the permit application is considered started on the date when the $300 building permit deposit fee and applicable zoning fee are paid; complete application materials must be uploaded within 120 days. For all other building permit types, the application is considered started on the business day when complete application materials are received by the Department of Buildings.

Compliance Documentation

The Department of Buildings has prepared PDF forms for documenting compliance with the 2022 Energy Transformation Code. These forms are available at chicago.gov/permit. Before January, the Department is planning to transition Energy Code Compliance Statement Filing to an online interface. Please check back for further announcements.

Because the 2022 Chicago Energy Transformation Code is similar to the 2021 IECC, REScheck and COMcheck can be used with the 2021 IECC (or 2019 ASHRAE 90.1) option selected.

To assist applicants, the Department has also prepared a summary of requirements applicable to each compliance method for residential and commercial projects.

Code Publication

The City of Chicago is working with the International Code Council to publish a compiled version of the 2022 Chicago Energy Code, which will be available in the near future in print and digital formats. Until that is available, please reference the local amendments.


The University of Illinois’ Smart Energy Design Assistance Center (SEDAC) provides helpful training on the latest energy codes. Please subscribe to the Department of Buildings newsletter to be notified of future Chicago-specific training opportunities.