The Department of Housing and Community Development’s mandatory building standards for recycled water systems for outdoor landscape irrigation in new residential construction are now invalidated. These regulations were developed during the 2016 Intervening Code Adoption Cycle and approved by the California Building Standards Commission (CBSC) for inclusion into the 2016 California Plumbing Code and California Green Building Standards Code and became effective July 1, 2018.

These regulations have been declared invalid and are vacated. Please see the Peremptory Writ of Mandate (PDF) (Southern California District Council of Laborers vs. HCD et al.; Case No. BS171958) which includes Exhibit 1 identifying invalidated sections of the California Code of Regulations Title 24, 2016 California Plumbing Code (Part 5); and Exhibit 2 identifying invalidated sections in the California Green Building Standards Code (Part 11).

The 2024 Triennial Code Adoption Cycle will result in the 2025 edition of the California Building Standards Code, Title 24 of the California Code of Regulations, effective January 1, 2026. Please refer to the California Building Standards Commission’s 2024 Triennial Code Adoption Cycle page for more details.

Development of Proposed Building Standards

Part 2 California Building Code

2025 CBC 45-Day Public Comment Period: September 6, 2024 – October 21, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov

Part 2.5 California Residential Code

2025 CRC 45-Day Public Comment Period: September 6, 2024 – October 21, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov

Part 10 California Existing Building Code

2025 CEBC 45-Day Public Comment Period: September 6, 2024 – October 21, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov

Part 2 California Building Code, Chapter 11A (2025 CBC)

2025 CBC, Chapter 11A 45-Day Public Comment Period (PDF): July 26, 2024, through September 9, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov.

Part 3 California Electrical Code (2025 CEC)

2025 CEC 45-Day Public Comment Period (PDF): May 17, 2024, through July 1, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov.

Part 4 California Mechanical Code (2025 CMC)

2025 CMC 45-Day Public Comment Period (PDF): May 17, 2024, through July 1, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov.

Part 5 California Plumbing Code (2025 CPC)

2025 CPC 45-Day Public Comment Period (PDF): May 17, 2024, through July 1, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov.

Part 11 California Green Building Standards Code (2025 CALGreen)

2025 CALGreen 45-Day Public Comment Period (PDF): May 17, 2024, through July 1, 2024

• Notice of Proposed Action (PDF)
• Initial Statement of Reasons (PDF)
• Express Terms (DOC)

Comments may be submitted to the California Building Standards Commission at cbsc@dgs.ca.gov.

2022 California Building Standards Code Development and Adoption Project (2022 Intervening Code Adoption Cycle)

The State Housing Law Program within the California Department of Housing and Community Development (HCD) develops statewide building standards for new construction of hotels, motels, lodging houses, apartments, and one- and two-family dwelling units and accessory buildings thereto. These building standards are submitted to the California Building Standards Commission (CBSC) for approval and adoption as part of the 2022 Intervening Code Adoption Cycle.

The 2022 Intervening Code Adoption Cycle results in the 2022 Intervening Code Supplement to Title 24. The 2022 Intervening Code Supplement will become effective on July 1, 2024.

Approved Building Standards

Part 2 California Building Code (2022 CBC Supplement)

Final Approved Documents: Approved by the California Building Standards Commission on June 29, 2023

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 2 California Building Code, Chapter 11A (2022 CBC Supplement)

Final Approved Documents: Approved by the California Building Standards Commission on June 29, 2023

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 5 California Plumbing Code (2022 CPC Supplement)

Final Approved Documents: Approved by the California Building Standards Commission on August 1, 2023

• Final Express Terms (DOC)
  • Final Express Terms Addendum (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 11 California Green Building Standards Code (2022 CALGreen Supplement)

Final Approved Documents: Approved by the California Building Standards Commission on August 2, 2023

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
  • Final Statement of Reasons Attachment A (PDF)
  • Final Statement of Reasons Attachment B (PDF)
• Nine-Point Criteria Analysis (PDF)

2022 California Building Standards Code Development and Adoption Project (2021 Triennial Code Adoption Cycle)

The State Housing Law Program within the California Department of Housing and Community Development (HCD) develops statewide building standards for new construction of hotels, motels, lodging houses, apartments, and one- and two-family dwelling units and accessory buildings thereto. These building standards are submitted to the California Building Standards Commission (CBSC) for approval and adoption as part of the 2021 Triennial Code Adoption Cycle.

The 2021 Triennial Code Adoption Cycle will result in the 2022 California Building Standards Code books. The 2022 California Building Standards Code will become effective on January 1, 2023.

Approved Building Standards

Summary of Changes to the 2022 California Building Standards Code (PDF)

Structural Design/Lateral Forces (SD/LF) and Building, Fire, and Other (BFO) Code Advisory Committees

Part 2 California Building Code (2022 CBC)

Final Approved Documents: Approved by the California Building Standards Commission on February 2, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 2.5 California Residential Code (2022 CRC)

Final Approved Documents: Approved by the California Building Standards Commission on February 2, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 10 California Existing Building Code (2022 CEBC)

Final Approved Documents: Approved by the California Building Standards Commission on February 2, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine- Point Criteria Analysis (PDF)

Plumbing, Electrical, Mechanical, and Energy (PEME) Code Advisory Committee

Part 3 California Electrical Code (2022 CEC)

Final Approved Documents: Approved by the California Building Standards Commission on January 6, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 4 California Mechanical Code (2022 CMC)

Final Approved Documents: Approved by the California Building Standards Commission on January 6, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 5 California Plumbing Code (2022 CPC)

Final Approved Documents: Approved by the California Building Standards Commission on January 6, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

Accessibility (Access) and Green Building (Green) Code Advisory Committees

Part 11 California Green Building Standards Code (2022 CALGreen)

Final Approved Documents: Approved by the California Building Standards Commission on January 6, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
  • Attachment A (PDF)
  • Attachment B (PDF)
  • Attachment C (PDF)
  • Attachment D (PDF)
  • Attachment E (PDF)
  • Attachment F (PDF)
• Nine-Point Criteria Analysis (PDF)

Part 2 California Building Code, Chapter 11A (2022 CBC)

Final Approved Documents: Approved by the California Building Standards Commission on February 2, 2022

• Final Express Terms (DOC)
• Final Statement of Reasons (PDF)
• Nine-Point Criteria Analysis (PDF)

The State Housing Law Program develops statewide building standards for new construction of hotels, motels, lodging houses, apartments, and one- and two-family dwelling units and accessory buildings thereto. These building standards are submitted to the California Building Standards Commission for approval and adoption. The 2019 Intervening Code Adoption Cycle will produce the 2019 California Building Standards Code Supplements for the 2019 code books. These supplements became effective on July 1, 2021.

Approved Building Standards

Part 2 California Building Code (2019 CBC)

Final Approved Documents: Approved by the California Building Standards Commission on August 14, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 2 California Building Code (2019 CBC, Chapter 11A)

Final Approved Documents: Approved by the California Building Standards Commission on July 13, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 2.5 California Residential Code (2019 CRC)

Final Approved Documents: Approved by the California Building Standards Commission on August 14, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 3 California Electrical Code (2019 CEC)

Final Approved Documents: Approved by the California Building Standards Commission on July 13, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 4 California Mechanical Code (2019 CMC)

Final Approved Documents: Approved by the California Building Standards Commission on July 13, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 5 California Plumbing Code (2019 CPC)

Final Approved Documents: Approved by the California Building Standards Commission on July 13, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 10 California Existing Building Code (2019 CEBC)

Final Approved Documents: Approved by the California Building Standards Commission on August 14, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

Part 11 California Green Building Standards Code (2019 CALGreen)

Final Approved Documents: Approved by the California Building Standards Commission on July 13, 2020.

• Final Express Terms (PDF)
• Final Statement of Reasons (PDF)
• Nine Point Criteria (PDF)

2019 California Building Standards Code Development and Adoption Project (2018 Triennial Code Adoption Cycle)

The State Housing Law Program within the Department of Housing and Community Development (HCD) develops new building standards, which are submitted to the California Building Standards Commission (CBSC) as part of the 2018 Triennial Code Adoption Cycle.

The State Housing Law Program develops statewide building standards for new construction of hotels, motels, lodging houses, apartments, dwellings and buildings accessory thereto. The building standards are published in the California Code of Regulations, Title 24, known as the California Building Standards Code.

To request a copy of the documents listed below, please contact HCD’s State Housing Law Program at (800) 952-8356. Note: Please allow ten business days for your request to be processed.

Approved Building Standards

Part 2 California Building Code (2018 IBC)

Final Approved Documents: Approved by the California Building Standards Commission on December 7, 2018.

• Final Express Terms
• Final Statement of Reasons
• Nine Point Criteria

Part 2.5 California Residential Code (2018 IRC)

Final Approved Documents: Approved by the California Building Standards Commission on December 7, 2018.

• Final Express Terms
• Final Statement of Reasons
• Nine Point Criteria

Part 3 California Electrical Code (2017 NEC)

Final Approved Documents: Approved by the California Building Standards Commission on January 15, 2019.

• Final Express Terms
• Final Statement of Reasons
• Nine Point Criteria

Part 4 California Mechanical Code (2018 UMC)

Final Approved Documents: Approved by the California Building Standards Commission on January 15, 2019.

• Final Express Terms
• Final Statement of Reasons
• Nine Point Criteria

Part 5 California Plumbing Code (2018 UPC)

Final Approved Documents: Approved by the California Building Standards Commission on January 15, 2019. (Portions of the approved building standards relating to recycled water systems are now invalid and are vacated. See the Peremptory Writ of Mandate (PDF) for more information.)

• Final Express Terms
• Final Statement of Reasons
• Nine Point Criteria

Part 11 California Green Building Standards Code (CALGreen)

Final Approved Documents: Approved by the California Building Standards Commission on January 15, 2019. (Portions of the approved building standards relating to recycled water systems are now invalid and are vacated. See the Peremptory Writ of Mandate (PDF) for more information.)

• Final Express Terms
• Final Statement of Reasons
• Nine Point Criteria

2018 California Building Standards Code Emergency Regulations

The State Housing Law Program within the Department of Housing and Community Development (HCD) has developed emergency building standards applicable to the 2016 California Building Standards Code, specifically the 2016 California Building Code and the 2016 California Residential Code. These building standards, which were submitted to the California Building Standards Commission, are outside the normal Triennial or Intervening Code Adoption Cycles. The emergency building standards were developed in response to Chapter 786, Statutes of 2017 (Assembly Bill 932), which requires HCD to review and approve specified local jurisdiction’s emergency housing draft ordinances.

To request a copy of the documents listed below, please contact HCD’s State Housing Law Program at (800) 952-8356. Note: Please allow ten business days for your request to be processed.

Approved Emergency Building Standards

Title 24, Parts 2 and 2.5: 2016 California Building Code and 2016 California Residential Code

Emergency Housing

Approved by the California Building Standards Commission on December 7, 2018.

• Final Express Terms
• Final Statement of Reasons

Stakeholder Input

Stakeholder input and participation is necessary to assist HCD in developing building standards, which will continue to assure the availability of affordable housing and uniform statewide code enforcement; to protect the health, safety, and general welfare of the public and occupants of housing and buildings accessory thereto.  Here you will find the project information, reports, resources and ways to get involved in the process and assist HCD in this project.

Meeting Notices and Agendas

Department of Housing and Community Development

Complete the Email Sign-Up form and select the notifications you wish to receive to stay up to date on HCD’s Division of Codes and Standards rulemaking activities.

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.

• California Building Standards Commission (CBSC) ‌
• Office of the State Fire Marshal (SFM) ‌
• Division of the State Architect (DSA) ‌
• Division of the State Architect – Access Compliance ‌
• California Department of Health Care Access and Information (HCAI) ‌ formerly OSHPD
• California Energy Commission (CEC) ‌
• Department of Water Resources (DWR) ‌