The Green Building Energy Efficiency Standards contained in Appendices A4.2 and A5.2 of the California Code of Regulation (CCR), Title 24, Part 11 (CALGreen) include voluntary energy efficiency requirements for newly constructed buildings, and additions and alterations to existing buildings. The CEC updates the voluntary residential and nonresidential provisions every three years alongside the rest of the California Building Standards Code (Title 24, Parts 1 and 6).

The CEC encourages public participation in its proceedings.

To participate, you can attend the workshop and provide verbal comments to the record. Written comments can be submitted to the rulemaking docket. Instructions for submitting comments can be found on workshop notices.

The Public Advisor’s Office can help anyone with questions about the proceeding.

Sign up for the Building Energy Efficiency Standards topic to keep up to date about ongoing activities.

Upcoming Events

September 11, 2024 | 10:00 AM - 03:30 PM
Remote Access Only
The CEC will hold a public hearing for the purpose of hearing comments on the proposed standards at the date and time listed. Interested persons, or their authorized representative, may present oral and written statements, arguments, or contentions relevant to the proposed standards at the public hearing.

Past Events

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June 5, 2024 | 09:00 AM - 12:00 PM
Remote Access or In-Person


California Green Building Standards Code – Title 24, Part 11 (CALGreen)
Toll-free in California: 1-800-772-3300
Outside of California: 1-916-654-5106


Building Energy Efficiency Standards


California Green Building Standards Code (CALGreen)