CBECC-Res is a free computer program developed by the California Energy Commission for use in demonstrating compliance with the California Residential Building Energy Efficiency Standards.
The CBECC-Res project is managed by Bruce A. Wilcox, P.E. with general oversight provided by the California Energy Commission's Standards Tools Unit and CEC project manager RJ Wichert.
- CBECC-Res 2013 is used in complying with the 2013 Standards which are in effect for building permits filed before January 1, 2017.
- CBECC-Res 2016 is used ONLY for complying with the 2016 Standards which are in effect for building permits filed before January 1, 2020.
- CBECC-Res 2019 is used ONLY for complying with the 2019 Standards which are in effect for building permits filed before January 1, 2023.
- CBECC-Res 2022 is used ONLY for complying with the 2022 Standards which are mandatory for building permits filed after January 1, 2023.
- CBECC-Res 2025 is used ONLY for complying with the 2025 Standards which are mandatory for building permits filed after January 1, 2026.