New Building Standards Take Effect January 1, 2026

Beginning Thursday, January 1, 2026, the updated 2025 California Building Standards Code (Title 24) goes into effect, bringing significant changes to construction requirements Statewide. These updates focus on electrification, wildfire resilience, seismic safety and sustainable building practices — all designed to improve long-term safety and environmental performance.

Please note that any new project submitted after December 31, 2025, will be required to comply with the new standards.

As of January 1, 2026, California’s 2025 Energy Code (Title 24, Part 6) is now in effect.

All residential building permit applications that trigger energy code requirements and are submitted on or after January 1, 2026 must comply with the 2025 Energy Code and include a registered 2025 CF-1R. Permit applications submitted prior to that date remain subject to the 2022 Energy Code.

The Energy Code Compliance (ECC) Program is used to demonstrate compliance with all versions of the Energy Code when required for residential building Projects.  The ECC Program replaced the HERS Program effective January 1, 2026. 

 For the most current information on approved registries and the Energy Code Compliance (ECC) Program, please refer to the Energy Code Compliance page on the California Energy Commission (CEC) website.

Email Us   BuildingSafetyInfo@cityofcalabasas.com 

For solar plan review and permits, the City of Calabasas now uses the online web portal SolarApp+.  Please click here or on the SolarApp+ logo above for more information on to how to apply today.

Building and Safety is a team of public safety professionals who are here to help you accomplish your goal.  We enforce technical codes and laws related to the “built environment.” Our staff is here to help guide you to build in a timely manner while never losing sight of our primary goal, which is to save lives.  Our staff will demonstrate honesty, integrity, and fairness in all aspects of our responsibilities.  We will work diligently to be informative and extremely helpful to you, and we will work to the best of our ability to understand your goals and deliver superior service.

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