Chapter 1 — ADMINISTRATIVE REGULATIONS OF THE CALIFORNIA BUILDING STANDARDS COMMISSION
Article 1 — GENERAL
2025 California Administrative Code (Title 24, Part 1) · 2025 edition · updated 2026-07-29 · California
1-101 Abbreviations. ¶
The following abbreviations shall apply to Title 24, California Code of Regulations. Abbreviations may also be provided in each of the othe
1-101. Abbreviations. The following abbreviations shall apply to Title 24, California Code of Regulations. Abbreviations may also be provided in each of the other 12 parts of Title 24. If an abbreviation in this section conflicts with an abbreviation within another part of Title 24, the abbreviation reference in the other part shall prevail within that part.
Note: For information regarding the code provisions adopted for a state agency and the application of such code provisions, see the agency administrative chapters in the appropriate parts of Title 24, California Code of Regulations.
AGR Department of Food and Agriculture
BSC Identifies code provisions by the Building Standards Commission
BSC-CG Identifies the California Green Building Standards Code (CALGreen) provisions by BSC
BSCC Identifies code provisions by the Board of State and Community Corrections
CA Department of Consumer Affairs
- CALGreen California Green Building Standards Code (CALGreen), Part 11 of Title 24
CBC California Building Code (Part 2 of Title 24) CCR California Code of Regulations CEBC California Existing Building Code (Part 10 of Title 24) CEC California Electrical Code (Part 3 of Title 24) CEC California Energy Code (Part 6 of Title 24) CEC California Energy Commission CFC California Fire Code CHBC California Historical Building Code (Part 8 of Title 24) CMC California Mechanical Code (Part 4 of Title 24) CPC California Plumbing Code (Part 5 of Title 24) CRC California Residential Code (Part 2.5 of Title 24) CRSC California Referenced Standards Code (Part 12 of Title 24) DPH Identifies code provisions by the Department of Public Health DWR Identifies code provisions by the Department of Water Resources DSA Division of the State Architect, a division within the Department of General Services DSA-SS Identifies code provisions by the Division of the State Architect-Structural Safety DSA-SS/CC Identifies provisions by the Division of the State Architect-Structural Safety, applicable to Community Colleges as specified DSA-AC Identifies code provisions by the Division of the State Architect-Access Compliance DOE Department of Education DOT Department of Transportation HCAI Department of Health Care Access and Information HCD Housing and Community Development HCD 1 Identifies code provisions by HCD HCD 2 Identifies code provisions by HCD HCD 1AC Identifies Housing Accessibility code provisions by HCD IBC International Building Code ® IFC International Fire Code ® IEBC International Existing Building Code ® IRC International Residential Code ® NEC National Electrical Code ® NFPA National Fire Protection Association OHP Office of Historical Preservation OSHPD Office of Statewide Hospital Planning and Development within the HCAI OSHPD 1 and 1R Identifies code provisions by OSHPD OSHPD 2 Identifies code provisions by OSHPD OSHPD 3 Identifies code provisions by OSHPD OSHPD 4 Identifies code provisions by OSHPD
OSHPD 5 Identifies code provisions by OSHPD
SFM Identifies code provisions by the Office of the State Fire Marshal SHBSB Identifies code provisions by the State Historical Building Safety Board SL Identifies code provisions by the State Librarian
SLC Identifies code provisions by the State Lands Commission UBC™ Uniform Building Code ; the UBC is no longer published or adopted in the current edition of Title 24 UBC STDS Uniform Building Code Standards ; the UBC STDS is no longer published, but relevant standards are referenced in the CEBC UFC Uniform Fire Code; the UFC is no longer published or adopted in the current edition of Title 24
UHC Uniform Housing Code ; adopted by HCD in Chapter 1 of Title 25
UMC Uniform Mechanical Code®
UPC Uniform Plumbing Code®
Authority: Government Code Section 11000, and Health and Safety Code Sections 18931 (f) and 18940.5.
Reference: Government Code Section 11000, and Health and Safety Code Sections 18931 (d) and 18940.5.
1-103 Definitions. ¶
The following definitions shall apply to this Chapter 1, of Part 1, of Title 24, California Code of Regulations. Definitions may also be prov
1-103. Definitions. The following definitions shall apply to this Chapter 1, of Part 1, of Title 24, California Code of Regulations. Definitions may also be provided in each of the other 12 parts of Title 24. If a definition in this section conflicts with a definition within another part of Title 24, the definition reference in the other part shall prevail within that part.
ADOPTING AGENCY (or state adopting agency). An agency of state government with authority in law to develop and adopt building standards for approval and publication in Title 24, California Code of Regulations, by the Commission. An adopting agency has authority to conduct public hearings aside from the public hearings conducted by the Commission. See Proposing Agency.
APPEAL. An appeal to the Commission, as provided and limited by Health and Safety Code Sections 18945 through 18949, by any person adversely affected by the application of an existing building standard or administrative regulation in Title 24, by a state agency or local agency.
BUILDING STANDARDS ADMINISTRATION SPECIAL REVOLVING FUND (the Fund). The Fund established in the State Treasury to receive funds submitted by the Commission pursuant to the provisions of Health and Safety Code Section 18931.6 and Article 5.
CALGreen. The California Green Building Standards in Part 11 of Title 24, California Code of Regulations.
CODE ADVISORY COMMITTEE. An advisory panel or body appointed to advise the Commission with respect to building standards as authorized by Health and Safety Code Section 18927.
CODE CHANGE (proposed provision). A proposed addition, amendment, repeal or adoption of a building standard as defined by Health and Safety Code Section 18909, or of an administrative regulation of Title 24.
CODE CHANGE SUBMITTAL (rulemaking file). The rulemaking file submitted by a state proposing agency, which includes the proposed code change(s) or provision(s) for Title 24, along with justification and all other required documents, submitted to the Commission by a proposing agency.
COMMISSION. The California Building Standards Commission established under Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901.
DEPARTMENT. The Department of Housing and Community Development.
ENFORCING AGENCY (or Enforcement Agency). An agency, board, commission, department, division, office or individual assigned by law or ordinance as being responsible for the enforcement of building standards.
EXECUTIVE DIRECTOR. The Chief Executive appointed by the California Building Standards Commission pursuant to Health and Safety Code Section 18925, to carry out the duties assigned by the California Building Standards Commission as designated in Health and Safety Code, Division 13, Part 2.5, commencing with Section 18901.
FEES, FRACTIONS THEREOF. Fee increments for individual building permit values less than $100,000 as described in Article 5, Section 1-505 and Table 1-505.
JUSTIFICATION. An initial statement of reasons and the information needed to complete a notice of proposed action, including a determination as to the effect of the code change on housing costs.
NOTICE OF PROPOSED ACTION. For the purposes of this chapter is synonymous with the term Notice of Proposed Building Standard.
OFFICE. The Office of the State Fire Marshal.
PETITION. A written submittal to the Commission or a state adopting or proposing agency by any local government agency, firm or member of the public for the purpose of proposing a new building standard or administrative regulation in Title 24, or the amendment or repeal of an existing building standard or administrative regulation in Title 24 that is currently effective.
PROPOSING AGENCY (or state proposing agency). A state agency having authority and responsibility to propose a building standard for adoption by the Commission and publication in Title 24, California Code of Regulations. A proposing agency does not have authority to conduct public hearings for the adoption of building standards. See Adopting Agency.
PUBLIC UTILITY. The California Public Utilities Commission (PUC); or which would otherwise by regulated by the PUC but are exempted by municipal charter.
SPECIAL CODE ADVISORY COMMITTEE. An ad hoc committee established by the Commission, when necessary, to advise the Commission on a subject in the code needing extensive revision or on a complex subject which needs to be regulated or to perform a review of a proposed code change that warrants special technical review.
STATE AGENCY REPRESENTATIVE(S). For the purposes of this chapter means representative(s) of state proposing or adopting agencies.
TECHNICAL REVIEW. A review of a proposed code change and its justification conducted pursuant to Health and Safety Code Section 18930 (c), (d), (e), (f) to ensure that a code change is justified in terms of nine-point criteria of Health and Safety Code Section 18930 (a).
TITLE 24. The 24th title within the California Code of Regulations, also referred to as the California Building Standards Code. Title 24 is reserved for building standards and administrative regulations to implement building standards approved and published, or caused to be published, by the California Building Standards Commission.
Authority: Government Code 11000, and Health and Safety Code Sections 18929.1, 18931(f) and 18949.6.
Reference: Government Code 11000, and Health and Safety Code Sections 18927, 18929–18932, 18934, 18935, 18936, 18949.1, 18949.2, 18949.3, 18949.5 and 18949.6.
1-105 Use of Commission indicia. ¶
1-105. Use of Commission indicia.
(a) Other than the Commission, no person, firm, agency or organization shall copy, duplicate, reprint or otherwise use the indicia of the Commission without the express written approval of the Commission. For the purposes of this section, the Commission’s indicia shall include but not be limited to any logo, symbol or emblem used by the Commission to identify codes, standards, bulletins and other documents or properties as being issued, adopted, approved, published or maintained by the Commission.
(b) Requests for approval to copy, duplicate, reprint or otherwise use the indicia of the Commission shall be in writing and be submitted to the Executive Director, California Building Standards Commission, 2525 Natomas Park Drive, Suite 130, Sacramento, California 95833. The address should be confirmed at the Commission’s website: www.dgs.ca.gov/bsc. Requests shall include the identification of the intended document or material that is to include the indicium or indicia of the Commission, and the time frame for the proposed usage.
(c) The Executive Director, or designee, shall provide a written response to requests received pursuant to subsection (b). Approvals of indicia usage may include limitations to a specific usage, type of document or material, and/or time frame. Denial of indicia usage shall include the reasoning for the denial. The Commission shall consider reasonably corrected resubmittals. Authority: Health and Safety Code Section 18931(f).
Reference: Health and Safety Code Section 18931(f).
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▸ Chapter 1 — ADMINISTRATIVE REGULATIONS OF THE CALIFORNIA BUILD…
- Chapter 2 — ADMINISTRATIVE REGULATIONS FOR THE DEPARTMENT OF H…
- Chapter 3 — ADMINISTRATIVE REGULATIONS FOR THE OFFICE OF THE S…
- Chapter 4 — ADMINISTRATIVE REGULATIONS FOR THE DIVISION OF THE…
- Chapter 5 — ACCESS TO PUBLIC BUILDINGS BY PERSONS WITH DISABIL…
- Chapter 6 — SEISMIC EVALUATION PROCEDURES FOR HOSPITAL BUILDINGS
- Chapter 7 — SAFETY STANDARDS FOR HEALTH FACILITIES
- Chapter 8 — ADMINISTRATIVE REGULATIONS FOR THE CALIFORNIA DEPA…
- Chapter 9 — ADMINISTRATIVE REGULATIONS FOR THE OCCUPATIONAL SA…
- Chapter 10 — ADMINISTRATIVE REGULATIONS FOR THE CALIFORNIA ENE…
- Chapter 11 — ADMINISTRATIVE REGULATIONS FOR THE DEPARTMENT OF …
- Chapter 12 — ADMINISTRATIVE REGULATIONS FOR THE DEPARTMENT OF …
- Chapter 13 — ADMINISTRATIVE REGULATIONS FOR THE BOARD OF STATE…
- Chapter 14 — ADMINISTRATIVE REGULATIONS FOR THE DEPARTMENT OF …
- Chapter 15 — DEPARTMENT OF CONSUMER AFFAIRS
- Chapter 16 — CALIFORNIA STATE LIBRARY