CALGreen
CALGreen is California’s first green building code and first in the nation state-mandated green building code. It is formally known as the California Green Building Standards Code, and can be found in California Code of Regulations, title 24, part 11.
The purpose of CALGreen is to improve public health, safety, and general welfare through enhanced design and construction of buildings using concepts which reduce negative impacts and promote those principles which have a positive environmental impact and encourage sustainable construction practices. CALGreen was adopted to address the five divisions of building construction:
- Planning and design
- Energy efficiency
- Water efficiency and conservation
- Material conservation and resource efficiency
- Environmental quality
Application
CALGreen applies to the planning, design, operation, construction, use, and occupancy of every newly-constructed building or structure on a statewide basis unless otherwise indicated. Additions and alterations to existing buildings which increase the building’s conditioned area, interior volume, or size are also covered by the scope of CALGreen.
CALGreen also specifies requirements for applications regulated by the California Building Standards Commission (BSC), California Energy Commission (CEC), Division of the State Architect (DSA), Department of Public Health (CDPH), Office of Statewide Health Planning and Development (OSHPD), and the Department of Water Resources (DWR). Consistent with other parts of Title 24, the Matrix Adoption Tables at the front of each chapter are to assist the code user to determine which sections or chapters are applicable to buildings under the authority of a specific State agency; however, they are for information only and are not considered regulatory.
Scope
CALGreen provisions under the jurisdiction of the California Department of Housing and Community Development (HCD) are for newly constructed residential structures, as well as additions and alterations to existing buildings which increase the building’s “conditioned area, interior volume or size. Therefore, for the purposes of HCD, CALGreen applies to the following types of residential structures:
- Hotels, motels, lodging houses
- Apartment houses, condominiums
- One and two-family dwellings, townhouses, factory-built housing
- Dormitories, shelters for homeless persons, congregate residences, employee housing
- Other types of dwellings containing sleeping accommodations with or without common toilets or cooking facilities
Department of Housing and Community Development
2025 CALGreen 45-Day Public Comment Period (PDF): May 17, 2024, through July 1, 2024
Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov.
California Building Standards Commission
Please visit the California Building Standards Commission (CBSC) Calendar of Events to check for upcoming building code development and adoption meetings.
Contact the CALGreen team at Title24@hcd.ca.gov to request copies of any CALGreen resources not listed below.
2022 CALGreen
- 2022 CALGreen Code
- Guide to the 2022 California Green Building Standards Code: Residential
- Please email Title24@hcd.ca.gov to request the documents referenced within the Guide.
- 2022 Residential Mandatory Measures (PDF) — Effective July 1, 2024
- 2022 Tier 1 Residential Measures (PDF) — Effective July 1, 2024
- 2022 Tier 2 Residential Measures (PDF) — Effective July 1, 2024
- 2022 Residential Occupancies Application Checklist (PDF) — Section A4.602, Effective July 1, 2024
- 2022 Residential Occupancies Application Checklist — Attachment (PDF) — Effective July 1, 2024
- 2022 Residential Mandatory Measures (PDF) — Effective January 1, 2023
- 2022 Tier 1 Residential Measures (PDF) — Effective January 1, 2023
- 2022 Tier 2 Residential Measures (PDF) — Effective January 1, 2023
- 2022 Residential Occupancies Application Checklist (PDF) — Section A4.602, effective January 1, 2023
- 2022 Residential Occupancies Application Checklist — Attachment (PDF) — Effective January 1, 2023
2019 CALGreen
- 2019 CALGreen Code
- Guide to the 2019 California Green Building Standards Code: Residential
- Please email Title24@hcd.ca.gov to request the documents referenced within the Guide.
- 2019 Residential Occupancies Application Checklist (PDF) — Appendix A4, Section A4.602
2016 CALGreen
- 2016 CALGreen Code
- Guide to the 2016 California Green Building Standards Code: Residential
- Please email Title24@hcd.ca.gov to request the documents referenced within the Guide.
- 2016 Residential Occupancies Application Checklist (PDF) — Appendix A4, Section A4.602
- Residential Mandatory Measures (RMM) 2 (PDF) — 2016 CALGreen Installation Certificate
- 2016 Tier 1 Residential Measures (PDF) — Effective January 1, 2017
- 2016 Tier 2 Residential Measures (PDF) — Effective January 1, 2017
2013 CALGreen
- 2013 CALGreen Code
- To obtain a copy of the Guide to the 2013 California Green Building Standards Code: Residential, visit the International Code Council (ICC) website.
- Please email Title24@hcd.ca.gov to request the documents referenced within the Guide.
2010 CALGreen
- 2010 CALGreen Code
- To obtain a copy of the Guide to the 2010 California Green Building Standards Code: Residential, visit the International Code Council (ICC) website.
- Please email Title24@hcd.ca.gov to request the documents referenced within the Guide.
- Low-Rise Residential Mandatory Measures (PDF) — Effective July 1, 2012
- 2010 Residential Occupancies Application Checklist (DOC) — Effective July 1, 2012
- 2010 Residential Occupancies Application Checklist (DOC) — Effective January 1, 2010
HCD developed forms and worksheets to support users in meeting CALGreen documentation requirements. The forms and worksheets are offered only as aids, which may be used to show compliance with CALGreen, and are not State mandated. Contact the State Housing Law Program at (800) 952-8356 to obtain copies of any of the forms or worksheets. You may modify the forms to fit the needs of an individual or local enforcing agency. Before using the compliance forms, you should always check with the local enforcing agency to verify whether any jurisdiction-specific forms are required.