CRSC · California Referenced Standards Code
Scope & applicability
The CRSC scope and applicability pages explain what each referenced-standard chapter covers, when a listed standard becomes enforceable, and where to find chapter scope statements like §12‑3‑1.1.
Last reviewed: July 6, 2026
Overview
The Scope & applicability section of the California Referenced Standards Code (CRSC) explains what each referenced-standard chapter covers and the limits on where those standards apply — for example, chapter scope statements such as §12‑3‑1.1 define the subject and intended use of that chapter’s requirements.
This material matters because the standards listed in the CRSC are treated as part of the California building regulations “to the extent of the reference,” so they become enforceable code requirements when a primary code references them; see how referenced standards are integrated into the code framework in the Building Code’s discussion of referenced standards and Part VI.
Key places to look are the chapter-level scope statements (for example, §12‑3‑1.1 for releasing systems for security bars) and the CRSC’s tables and chapter headers that list each standard and the sections that reference it; for related rules on how references interact with code provisions see §101–§102 in the California Building and Residential Codes (notably §101.2 and §102.4).
In this section
Code references
Grounded in the retrieved California Referenced Standards Code — click a citation to read the verbatim passage:
CRSC § 1-16 High relevance — show source text
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DIVISION II SCOPE AND ADMINISTRATION
User notes:
About this chapter: Chapter 1 Division II establishes the limits of applicability of this code and describes how the code is to be applied and enforced. Chapter 1 Division II is in two parts: Part 1—Scope and Application (Sections R101–R102) and Part 2—Administration and Enforcement (Sections R103–R114). Section R101 identifies which buildings and structures come under its purview and references other I-Codes as applicable. Standards and codes are scoped to the extent referenced (see Section R102.4).
The one- and two-family dwelling code is intended to be adopted as a legally enforceable document, and it cannot be effective without adequate provisions for its administration and enforcement. The provisions of Chapter 1 establish the authority and duties of the building official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Division II is not adopted by the Department of Housing and Community Development except where specifically indicated. Note: Specific sections of Chapter 1, Division II adopted by the State Fire Marshal will be indicated in the Matrix Adoption Table.
PART 1—SCOPE AND APPLICATION
SECTION R101—SCOPE AND GENERAL REQUIREMENTS
R101.1 Title. These provisions shall be known as the Residential Code for One- and Two-family Dwellings of [ NAME OF JURISDICTION ], and shall be cited as such and will be referred to herein as “this code.”
R101.2 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, removal and demolition of detached one- and two-family dwellings and townhouses not more than three stories above grade plane in height with a separate means of egress and their accessory structures not more than three stories above grade plane in height.
Exception: The following shall be permitted to be constructed in accordance with this code where provided with an automatic sprinkler system complying with Section R309 :
Live/work units located in townhouses and complying with the requirements of Section 508.5 of the California Building Code.
Owner-occupied lodging houses with five or fewer guestrooms.
A care facility with five or fewer persons receiving custodial care within a dwelling unit.
A care facility with five or fewer persons receiving medical care within a dwelling unit.
A day care facility for five or fewer persons of any age receiving care within a dwelling unit.
R101.2.1 Appendices. Provisions in the appendices shall not apply unless specifically adopted.
R101.3 Purpose. The purpose of this code is to establish minimum requirements to provide a reasonable level of safety, health and general welfare through affordability, structural strength, means of egress, stability, sanitation, light and ventilation, energy conservation and safety to life and property from fire and other hazards and to provide a reasonable level of safety to firefighters and emergency responders during emergency operations.
SECTION R102—APPLICABILITY
R102.1 General. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall be applicable. Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern.
CRSC § 1.11.5 High relevance — show source text
1.11.5 Inspections. Work performed subject to the provisions of this code shall comply with the inspection requirements of Sections R109.1 through R109.1.6.
1.11.5.1 Existing Group I -1 or R occupancies. Licensed 24-hour care in a Group I-1 or R occupancy in existence and originally classi- fied under previously adopted state codes shall be reinspected under the appropriate previous code, provided there is no change in the use or character which would place the facility in a different occupancy group.
1.11.6 Certificate of occupancy. A certificate of occupancy shall be issued as specified in Section R110.
1.11.7 Temporary structures and uses. See Section R107.
1.11.8 Service utilities. See Section R111.
1.11.9 Stop work order. See Section R114.
1.11.10 Unsafe buildings, structures and equipment. See Title 24, Part 2, California Building Code, Section 115.
1.11.11 Adopting agency identification. The provisions of this code applicable to buildings identified in this Section 1.11 will be identi- fied in the Matrix Adoption Tables under the acronym SFM.
SECTION 1.12—RESERVED
SECTION 1.13—RESERVED
SECTION 1.14—RESERVED
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DIVISION II SCOPE AND ADMINISTRATION
User notes:
About this chapter: Chapter 1 Division II establishes the limits of applicability of this code and describes how the code is to be applied and enforced. Chapter 1 Division II is in two parts: Part 1—Scope and Application (Sections R101–R102) and Part 2—Administration and Enforcement (Sections R103–R114). Section R101 identifies which buildings and structures come under its purview and references other I-Codes as applicable. Standards and codes are scoped to the extent referenced (see Section R102.4).
The one- and two-family dwelling code is intended to be adopted as a legally enforceable document, and it cannot be effective without adequate provisions for its administration and enforcement. The provisions of Chapter 1 establish the authority and duties of the building official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Division II is not adopted by the Department of Housing and Community Development except where specifically indicated. Note: Specific sections of Chapter 1, Division II adopted by the State Fire Marshal will be indicated in the Matrix Adoption Table.
PART 1—SCOPE AND APPLICATION
SECTION R101—SCOPE AND GENERAL REQUIREMENTS
R101.1 Title. These provisions shall be known as the Residential Code for One- and Two-family Dwellings of [ NAME OF JURISDICTION ], and shall be cited as such and will be referred to herein as “this code.”
CRSC § 102.4 High relevance — show source text
ADMINISTRATION
DIVISION II SCOPE AND ADMINISTRATION
User notes:
About this chapter: Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. Chapter 1 is in two parts: Part 1—Scope and Application (Sections 101–102) and Part 2—Administration and Enforcement (Sections 103–116). Section 101 identifies which buildings and structures come under its purview and references other ICodes as applicable. Standards and codes are scoped to the extent referenced (see Section 102.4).
This code is intended to be adopted as a legally enforceable document and it cannot be effective without adequate provisions for its administration and enforcement. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner. Chapter 1 is largely concerned with maintaining “due process of law” in enforcing the building performance criteria contained in the body of the code.
ICC code development note: Code change proposals to this chapter will be considered by the Administrative Code Development Committee during the 2025 (Group B) Code Development Cycle.
Section 104 was revised for the 2024 edition. For complete information, see the Relocations table in the Preface of this code.
Note: Sections adopted or amended by state agencies are specifically indicated by an agency banner.
PART 1—SCOPE AND APPLICATION
SECTION 101—SCOPE AND GENERAL REQUIREMENTS
[A] 101.1 Title. These regulations shall be known as the Building Code of [ NAME OF JURISDICTION ], hereinafter referred to as “this code.”
[A] 101.2 Scope. The provisions of this code shall apply to the construction, alteration, relocation, enlargement, replacement, repair, equipment, use and occupancy, location, maintenance, removal and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures.
Exception: Detached one- and two-family dwellings and townhouses not more than three stories above grade plane in height with a separate means of egress, and their accessory structures not more than three stories above grade plane in height, shall comply with this code or the California Residential Code .
[A] 101.2.1 Appendices. Provisions in the appendices shall not apply unless specifically adopted.
[A] 101.3 Purpose. The purpose of this code is to establish the minimum requirements to provide a reasonable level of safety, health and general welfare through structural strength, means of egress, stability, sanitation, light and ventilation, energy conservation, and for providing a reasonable level of life safety and property protection from the hazards of fire, explosion or dangerous conditions, and to provide a reasonable level of safety to firefighters and emergency responders during emergency operations.
[A] 101.4 Referenced codes. The other codes specified in Sections 101.4.1 through 101.4.7 and referenced elsewhere in this code shall be considered to be part of the requirements of this code to the prescribed extent of each such reference.
CRSC § 1.00 Medium relevance — show source text
California Matrix Adoption Tables with California Code of Regulations, Title 19, Division 1
State Fire Marshal T-24 Column: If there is an “X” in the T-24 column under SFM, refer to the California Matrix Adoption Tables explaining how to use the matrix adoption tables.
State Fire Marshal T-19 Column: If there is an “X” in the T-19 column under SFM, this means that the corresponding section was reprinted from the California Code of Regulations (CCR), Title 19, Division 1 into the California Fire Code for the code user’s convenience. The corresponding Title-19 sections were listed in the matrix adoption tables in the order that they appear in the California Fire Code . The scope, applicability and appeals procedures of CCR, Title 19, Division 1 has not changed. For information regarding the specific purpose and scope of CCR, Title 19, unless otherwise specified, refer to CCR, Title 19, Division 1, Chapter 1, Subchapter 1, Article 1, Sections 1.00 through 1.14.
Example:
CHAPTER 3 – GENERAL PRECAUTIONS AGAINST FIRE
Adopting agency BSC BSC-
CGSFM Col5 HCD Col7 Col8 DSA Col10 OSHPD Col12 Col13 Col14 Col15 Col16 Col17 BSCC DPH AGR DWR CEC CA SL SLC Adopting agency BSC BSC-
CGT-24 T-19* 1 2 1-AC AC SS 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6 Adopt entire chapter Adopt entire chapter as
amended (amended
sections listed below)Adopt only those sections
that are listed belowX [California Code of
Regulations, Title 19,
Division 1]X Chapter/Section S A M P L E 301 [T-19 §3.14] X [T-19 §3.19 (a-g)] X 304 X [T-19 §3.07(a)] X [T-19 §3.07(b)] X *The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Fire Code are a reprint from the current CCR, Title 19, Division 1 text for the code user’s convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division 1 remains the same.
CRSC § 317.1.2.1 Medium relevance — show source text
The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing public buildings currently under the jurisdiction of DSA-SS.
317.1.2.1 Reference to other chapters. For public schools, where reference within this chapter is made to sections in Chapters 16, 17, 18, 19, 21 or 22 of the California Building Code, the provisions in Chapters 16A, 17A, 18A, 19A, 21A and 22A of the California Building Code, respectively, shall apply instead.
317.1.3 Community college buildings. [DSA-SS/CC] The provisions of Sections 317 through 323 establish minimum standards for earthquake evaluation and design for the rehabilitation of existing buildings for use as community college buildings under the jurisdiction of the Division of the State Architect—Structural Safety/Community Colleges [DSA-SS/CC], refer to Section 1.9.2.2.
The provisions of Section 317 through 323 also establish minimum standards for earthquake evaluation and design for rehabilitation of existing community college buildings currently under the jurisdiction of DSA-SS/CC.
317.1.3.1 Reference to other chapters. For community colleges, where reference within this chapter is made to sections in Chapters 17 or 18 of the California Building Code, the provisions in Chapters 17A and 18A of the California Building Code, respectively, shall apply instead.
317.2 Scope. All alterations, structurally connected additions and/or repairs to existing structures or portions thereof shall, at a minimum, be designed and constructed to resist the effects of seismic ground motions as provided in this section. The structural system shall be evaluated by a registered design professional and, if not meeting or exceeding the minimum seismic design performance requirements of this section, shall be retrofitted in compliance with these requirements.
Exception: Those structures for which Section 317.3 determines that assessment is not required, or for which Section 317.4 determines that retrofit is not needed, then only the requirements of Section 317.11 apply.
317.3 Applicability.
317.3.1 Existing state-owned buildings. [BSC, DSA-SS] For existing state-owned structures including all buildings owned by the University of California and the California State University, the requirements of Section 317 apply whenever the structure is to be retrofitted, repaired or modified and any of the following apply: 1. Total construction cost, not including cost of furnishings, fixtures and equipment, or normal maintenance, for the building exceeds 25 percent of the construction cost for the replacement of the existing building. The changes are cumulative for past modifications to the building that occurred after adoption of the 1995 California Building Code and did not require seismic retrofit.
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PROVISIONS FOR ALL COMPLIANCE METHODS
CRSC § 12-72 Medium relevance — show source text
|SFM|| |Chapter 12-72-2|Protective signaling systems. Single-and
multiple-station fire alarm devices
mechanically operated type.|SFM|| |Chapter 12-72-3|Protective signaling systems. Smoke detectors,
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12-1 ADMINISTRATION
RESERVED
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12-3 RELEASING SYSTEMS FOR SECURITY BARS IN DWELLINGS
(This standard includes provisions of Underwriters Laboratories Subject 2326, Appendix B, dated December 17, 1999, reprinted with their permission.)
INTRODUCTION
SECTION 12-3-1—SCOPE
12-3-1.1 These requirements cover releasing systems for bars, grilles, mesh, glazing or other items intended to provide security at doors and windows required for emergency escape from dwelling units. When actuated by the occupant, the system allows the obstructions over the door or window to be moved so occupants can escape in the event of an emergency.
12-3-1.2 These requirements only cover the ability of the releasing system to be manually activated from the interior of a dwelling unit by an occupant to affect an escape through the protected opening.
12-3-1.3 These requirements cover releasing systems intended for use on the interior side of doors or windows in all climatic locations.
12-3-1.4 These requirements do not evaluate the ability of the releasing system or obstructions to resist an external forced entry attack.
12-3-1.5 These requirements do not evaluate the ability of the releasing system or obstructions to be opened or removed from the exterior of the residential dwelling unit by emergency response personnel during rescue operations.
12-3-1.6 Products covered by these requirements are intended for installation in dwelling units to protect door and window openings that are designated by the California Building Standards Code to be used as the secondary means of escape from the living area.
12-3-1.7 Products covered by these requirements are not intended to be used to protect doors in means of egress path for nonresidential occupancies, the common egress path of multifamily residential dwelling units or the primary means of egress path in a single-family dwelling unit.
12-3-1.8 These requirements do not cover window guards or fall prevention devices that are intended to prevent falls from upper story windows.
12-3-1.9 These requirements do not apply to storm doors and windows or light duty screens used for insect control.
CRSC § 1.11.11 Medium relevance — show source text
1.11.11 Adopting Agency Identification. The provisions of this code applicable to buildings identified in this Section 1.11 will be identi- fied in the Matrix Adoption Tables under the acronym SFM.
SECTION 1.12—STATE LIBRARIAN
1.12.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Application— Public library construction and renovation using funds from the California Library Construction and Renovation Bond Act of 1988.
Enforcing agency— State librarian.
Authority cited— Education Code Sections 19950 through 19981.
Reference— Education Code Sections 19950 through 19981.
SECTION 1.13—DEPARTMENT OF WATER RESOURCES
RESERVED
SECTION 1.14—CALIFORNIA STATE LANDS COMMISSION
1.14.1 Specific scope of application of the agency responsible for enforcement, the enforcement agency and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated.
Application— Marine oil terminals.
Enforcing agency— California State Lands Commission.
Authority cited— Public Resources Code Section 8755.
Reference— Public Resources Code Section 8755.
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ADMINISTRATION
DIVISION II SCOPE AND ADMINISTRATION
User notes:
About this chapter: Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. Chapter 1 is in two parts: Part 1—Scope and Application (Sections 101–102) and Part 2—Administration and Enforcement (Sections 103–116). Section 101 identifies which buildings and structures come under its purview and references other ICodes as applicable. Standards and codes are scoped to the extent referenced (see Section 102.4).
This code is intended to be adopted as a legally enforceable document and it cannot be effective without adequate provisions for its administration and enforcement. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner. Chapter 1 is largely concerned with maintaining “due process of law” in enforcing the building performance criteria contained in the body of the code.
ICC code development note: Code change proposals to this chapter will be considered by the Administrative Code Development Committee during the 2025 (Group B) Code Development Cycle.
Section 104 was revised for the 2024 edition. For complete information, see the Relocations table in the Preface of this code.
Note: Sections adopted or amended by state agencies are specifically indicated by an agency banner.
PART 1—SCOPE AND APPLICATION
SECTION 101—SCOPE AND GENERAL REQUIREMENTS
[A] 101.1 Title. These regulations shall be known as the Building Code of [ NAME OF JURISDICTION ], hereinafter referred to as “this code.”
CRSC § 3.1.1 Medium relevance — show source text
3|||X||||||||||||||||||||| |105.3.1.1|X||X||||||||||||||||||||| |105.3.3 – 105.5.9|||X||||||||||||||||||||| |Table 105.5.9|||X||||||||||||||||||||| |105.5.11 – 105.5.12|||X||||||||||||||||||||| |105.5.14 – 105.5.18|||X||||||||||||||||||||| |Table 105.5.22|||X||||||||||||||||||||| |105.5.23–105.5.25|||X||||||||||||||||||||| |105.5.27–105.5.29|||X||||||||||||||||||||| |105.5.31|||X||||||||||||||||||||| |105.5.40|||X||||||||||||||||||||| |105.5.42|||X||||||||||||||||||||| |105.5.44|||X||||||||||||||||||||| |105.5.51|||X||||||||||||||||||||| |105.5.53|||X||||||||||||||||||||| |105.5.58 – 105.5.59|||X||||||||||||||||||||| |105.6 – 105.6.1|||X||||||||||||||||||||| |105.6.3 – 105.6.25|||X||||||||||||||||||||| |109.2 – 109.4|||X||||||||||||||||||||| |113.1 – 113.3.1|||X||||||||||||||||||||| |114.1 – 114.4|||X||||||||||||||||||||| |115|||X|||||||||||||||||||||
- The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Fire Code are a reprint from the current CCR, Title 19, Division 1 text for the code user’s convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division I remain the same.
The state agency does not adopt sections identified by the following symbol:
The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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PART I— ADMINISTRATIVE
1 ADMINISTRATION
DIVISION I CALIFORNIA ADMINISTRATION
SECTION 1.1—GENERAL
1.1.1 Title. These regulations shall be known as the California Fire Code, may be cited as such and will be referred to herein as “this code.” The California Fire Code is Part 9 of thirteen parts of the official compilation and publication of the adoptions, amendment and repeal of building regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 International Fire Code of the International Code Council (ICC) with necessary California amendments.
CRSC § 12-7 Medium relevance — show source text
Title 19, Division 1]|||||||||||||||||||||||| |Chapter / Section|||||||||||||||||||||||| |AASHTO HB-17—2002|||X||||||||||||||||||||| |ASTM D638—2022|||X||||||||||||||||||||| |ASTM D3909/D3909M_—2022_|||X||||||||||||||||||||| |ASTM E84_—2023d_|||X||||||||||||||||||||| |ASTM E119_—2022_|||X||||||||||||||||||||| |ASTM E136_—2024a_|||X||||||||||||||||||||| |ASTM E1354_—2023_|||X||||||||||||||||||||| |ASTM E2632—2020|||X||||||||||||||||||||| |ASTM E2652—2022|||X||||||||||||||||||||| |ASTM E2707—2022|||X||||||||||||||||||||| |ASTM E2726/E2726M—
2012a(2017)|||X||||||||||||||||||||| |ASTM E2957—2017|||X||||||||||||||||||||| |ASTM G155—2021|||X||||||||||||||||||||| |NFPA 252—2022|||X||||||||||||||||||||| |NFPA 257—2022|||X||||||||||||||||||||| |SFM 12-7A-1|||X||||||||||||||||||||| |SFM 12-7A-2|||X||||||||||||||||||||| |SFM 12-7A-3|||X||||||||||||||||||||| |SFM 12-7A-4|||X||||||||||||||||||||| |SFM 12-7A-4A|||X||||||||||||||||||||| |UL 9—2009|||X||||||||||||||||||||| |UL 10B—2008|||X||||||||||||||||||||| |UL 10C—2016|||X||||||||||||||||||||| |UL 94—2023|||X||||||||||||||||||||| |UL 263_—2011|||X||||||||||||||||||||| |UL 723—2018|||X||||||||||||||||||||| |UL 790—2022_|||X|||||||||||||||||||||- The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Wildland-Urban Interface Code are a reprint from the current CCR, Title 19, Division 1 text for the code user’s convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division I remain the same. The state agency does not adopt sections identified by the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
CRSC § 1.1 Medium relevance — show source text
Division 1]||||X|||||||||||||||||||| |Chapter / Section|||||||||||||||||||||||| |Division I|||||||||||||||||||||||| |1.1.1 –1.11.2.1.1|||X||||||||||||||||||||| |[T-19 §1.11]||||X|||||||||||||||||||| |[T-19 §1.12]||||X|||||||||||||||||||| |1.11.2.1.2 –1.11.2.2|||X||||||||||||||||||||| |[T-19 §1.08]||||X|||||||||||||||||||| |[T-19 §1.13]||||X|||||||||||||||||||| |1.11.2.3 –1.11.11|||||||||||||||||||||||| |[T-19 §1.03]||||X|||||||||||||||||||| |[T-19 §1.09.1]||||X|||||||||||||||||||| |1.12|||||||||||||||||||||||| |Division II|||||||||||||||||||||||| |101.1|||X||||||||||||||||||||| |101.2|||X||||||||||||||||||||| |101.3.1|||X||||||||||||||||||||| |101.3.1.1|||X||||||||||||||||||||| |101.6|||X||||||||||||||||||||| |102.1|||X||||||||||||||||||||| |102.2|||X||||||||||||||||||||| |102.6|||X||||||||||||||||||||| |104.2.2|||X||||||||||||||||||||| |104.3|||X||||||||||||||||||||| |104.6|||X||||||||||||||||||||| |104.8|||X||||||||||||||||||||| |104.8.1|||X||||||||||||||||||||| |105.1|||X||||||||||||||||||||| |105.2|||X||||||||||||||||||||| |105.3|||X||||||||||||||||||||| |105.4|||X||||||||||||||||||||| |105.8|||X||||||||||||||||||||| |105.10|||X||||||||||||||||||||| |106.1 – 106.5|||X||||||||||||||||||||| |106.8|||X||||||||||||||||||||| |106.10|||X||||||||||||||||||||| |107|||X||||||||||||||||||||| |109.1 – 109.1.2.3|||X||||||||||||||||||||| |109.3.7.1|||X||||||||||||||||||||| |109.3.7.2|||X||||||||||||||||||||| |110 – 111|||X||||||||||||||||||||| |113|||X|||||||||||||||||||||
- The California Code of Regulations (CCR), Title 19, Division 1 provisions that are found in the California Wildland-Urban Interface Code are a reprint from the current CCR, Title 19, Division 1 text for the code user’s convenience only. The scope, applicability and appeals procedures of CCR, Title 19, Division I remain the same. The state agency does not adopt sections identified by the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
CRSC § 508.5 Medium relevance — show source text
Exception: The following shall be permitted to be constructed in accordance with this code where provided with an automatic sprinkler system complying with Section R309 :
Live/work units located in townhouses and complying with the requirements of Section 508.5 of the California Building Code.
Owner-occupied lodging houses with five or fewer guestrooms.
A care facility with five or fewer persons receiving custodial care within a dwelling unit.
A care facility with five or fewer persons receiving medical care within a dwelling unit.
A day care facility for five or fewer persons of any age receiving care within a dwelling unit.
R101.2.1 Appendices. Provisions in the appendices shall not apply unless specifically adopted.
R101.3 Purpose. The purpose of this code is to establish minimum requirements to provide a reasonable level of safety, health and general welfare through affordability, structural strength, means of egress, stability, sanitation, light and ventilation, energy conservation and safety to life and property from fire and other hazards and to provide a reasonable level of safety to firefighters and emergency responders during emergency operations.
SECTION R102—APPLICABILITY
R102.1 General. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall be applicable. Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern.
R102.2 Other laws. The provisions of this code shall not be deemed to nullify any provisions of local, state or federal law.
R102.3 Application of references. References to chapter or section numbers, or to provisions not specifically identified by number, shall be construed to refer to such chapter, section or provision of this code.
R102.4 Referenced codes and standards. The codes and standards referenced in this code shall be considered part of the requirements of this code to the prescribed extent of each such reference and as further regulated in Sections R102.4.1 and R102.4.2.
Exception: Where enforcement of a code provision would violate the conditions of the listing of the equipment or appliance, the conditions of the listing and manufacturer’s instructions shall apply.
R102.4.1 Conflicts. Where conflicts occur between provisions of this code and referenced codes and standards, the provisions of this code shall apply.
R102.4.2 Provisions in referenced codes and standards. Where the extent of the reference to a referenced code or standard includes subject matter that is within the scope of this code, the provisions of this code, as applicable, shall take precedence over the provisions in the referenced code or standard.
R102.5 Partial invalidity. In the event any part or provision of this code is held to be illegal or void, this shall not have the effect of making void or illegal any of the other parts or provisions.
2025 CALIFORNIA RESIDENTIAL CODE 1-17
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
DIVISION II SCOPE AND ADMINISTRATION
R102.6 Existing structures. The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the International Property Maintenance Code or the California Fire Code, or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.
Frequently asked questions
Does a standard listed in the CRSC automatically become mandatory?
If a primary code references a standard, that standard is treated as part of the code to the extent of the reference; the CRSC lists those standards and the sections that reference them, so a referenced standard becomes enforceable where the primary code cites it.
Where do I find the formal scope for a specific CRSC chapter or standard?
Each CRSC chapter begins with a scope statement (SECTION … — SCOPE); for example, see §12‑3‑1.1, which lays out the scope for releasing systems for security bars in dwellings.
What happens if a referenced standard conflicts with a code provision?
When conflicts arise, the code’s provisions govern over referenced standards; the codes include specific applicability rules explaining that the code takes precedence where the scope overlaps or conflicts.
More in California Referenced Standards Code
- Administration and scope — CRSC Chapter 12 overview
- Air filter standards (Chapter 12‑71)
- Building and facility access / accessibility standards (Chapters 12‑11A, 12‑11B)
- Engineering regulations — quality and design of construction materials (12‑16 series)
- Exits and means of egress (Chapters 12‑10 series)
- Protective signaling systems and detectors (Chapters 12‑72‑1, ‑2, ‑3)
- Radiation shielding standards (Chapter 12‑31C)
- Referenced standards index / cross‑reference table (Part 12 listing of referenced standards)
- Releasing systems for security bars (egress-release standards)
- Standards for insulating materials (Chapter 12‑13)
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