Single-Family Residential, 2025 Energy Code
|Program Name||Research Versions Available||Contact Information||Additional
|California’s Building Energy Code Compliance Software – Residential (CBECC-Res)||
CBECC-Res 2025.0.8 RV contains the 2025 systemwide life cycle cost, hourly source energy factors, and weather data. Additionally, 2025.0.8 RV contains a new peak cooling compliance metric which was presented at the September 28, 2023 – 2025 staff workshop on single-family peak cooling requirements.
This research version is based on CBECC-Res 2022.3.0 and contains the 2022 standard designs and rulesets except where noted above.
Latest Research Version
California Energy Commission
See the CBECC-Res Website for:
Nonresidential and Multifamily, 2025 Energy Code
|Program Name||Compliance Software Versions||Contact Information||Additional
|California’s Building Energy Code Compliance Software (CBECC)||
CBECC 2025.0.4 RV contains the 2025 long-term systemwide cost and hourly source energy factors, and 2025 weather data
Additional CBECC 2025 building prototypes are available on the CBECC project website.
|California Energy Commission
Building Standards Office
715 P Street, MS 37
Sacramento, CA 95814
ATTN: RJ Wichert
See the CBECC Website for:
Help With the Energy Code
For assistance with understanding or locating information in the Energy Code, contact the Energy Standards Hotline at: 800-772-3300 (toll-free in California); 916-654-5106 (outside California); or via email at email@example.com.