Single-Family Residential, 2025 Energy Code

Program NameResearch Versions AvailableContact InformationAdditional
Information
California’s Building Energy Code Compliance Software – Residential (CBECC-Res)

CBECC-Res 2025.1.0 RV provides a preview of the final 2025.1.0 compliance software, is for review and testing only, and is not usable for compliance.

The CBECC-Res 2025.1.0 RV is a draft and does not include all measures and functionality that will be present in the final 2025.1.0 compliance software.

For details on what’s included in this version please see the Release Notes - PDF.

Latest Research Version

California Energy Commission 
Building Standards Office 
715 P Street, MS 37 
Sacramento, CA 95814 
ATTN:  Thao Chau
916-776-7974
cbecc.res@energy.ca.gov 

See the CBECC-Res Website for: 

  • Quick Start Guide and User Manual (packaged with software)
  • FAQs
  • Software Archive
  • ACM Tests
  • Reference Documents 

Support: cbecc.res@energy.ca.gov 

Nonresidential and Multifamily, 2025 Energy Code

Program NameCompliance Software VersionsContact InformationAdditional
Information
California’s Building Energy Code Compliance Software (CBECC) 

CBECC 2025.1.0 RV provides a preview of the final 2025.1.0 compliance software, is for review and testing only, and is not usable for compliance.

The CBECC 2025.1.0 RV is a draft and does not include all measures and functionality that will be present in the final 2025.1.0 compliance software.

For details on what’s included in this version please see the Quick Start Guide available from the installed software help menu.
 
Latest Version

California Energy Commission 
Building Standards Office 
715 P Street, MS 37 
Sacramento, CA 95814 
ATTN: RJ Wichert 
916-897-3450 
cbecc@energy.ca.gov 

See the CBECC Website for: 

  • SketchUp and OpenStudio SketchUp Plugin
  • Prototype Models & Tutorials
  • FAQ/Training
  • Software Archive
  • Quick Start Guide
  • User Manual

Support: cbecc@energy.ca.gov

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 title24@energy.ca.gov.