CBECC-Res was a free computer program developed by the California Energy Commission for use in demonstrating compliance with the California Residential Building Energy Efficiency Standards.
Starting with version 2025.2.0, CBECC-Res has been combined with CBECC into one program and there will no longer be a separate CBECC-Res version for single-family residential compliance. Please see the NORESCO BEES 2025 compliance software webpage for more details and to download CBECC.
- 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.