CRC · California Residential Code
Scope & Applicability
This page explains which dwelling types the CRC covers, the administrative sections that make it enforceable, and key applicability rules and exceptions.
Last reviewed: July 6, 2026
Overview
This part of the California Residential Code (CRC) defines what buildings the CRC covers and how those rules are applied and enforced. The CRC’s scope limits the code to detached one‑ and two‑family dwellings and townhouses (not more than three stories above grade plane) and their accessory structures, and explains exceptions such as certain live/work units or small lodging/care/day‑care uses (§R101.2) .
Chapter 1, Division II is divided into Part 1—Scope and Application (Sections §R101–§R102) and Part 2—Administration and Enforcement (Sections §R103–§R114). Those administration sections establish the code compliance agency and building official duties, permit and inspection requirements, certificates of occupancy, appeals and violations procedures that make the CRC legally enforceable in a jurisdiction .
The applicability rules also describe how the CRC interacts with referenced codes and standards, how to resolve conflicts (specific vs. general), treatment of existing structures and repairs, and special applicability (for example, wildland‑urban interface provisions) — see §R102 (including §R102.4, §R102.6 and §R102.7) for those principles and exceptions .
In this section
Code references
Grounded in the retrieved California Residential Code — click a citation to read the verbatim passage:
CRC § 1-10 High relevance — show source text
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . 1-10
1.12 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.13 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.14 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
DIVISION II— SCOPE AND ADMINISTRATION . . . . . . . . . . . . . . . . . 1-17
Part 1—Scope and Application. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
R101 Scope and General Requirements. . . . . . . . . . . . . . . 1-17
R102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Part 2—Administration and Enforcement . . . . . . . . . . . . . . . . . 1-18
R103 Code Compliance Agency . . . . . . . . . . . . . . . . . . . . . . 1-18
R104 Duties and Powers of the Building Official . . . . . . . 1-18
R105 Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
R106 Construction Documents . . . . . . . . . . . . . . . . . . . . . . 1-22
R107 Temporary Structures and Uses . . . . . . . . . . . . . . . . 1-23
R108 Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
R109 Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
R110 Certificate of Occupancy. . . . . . . . . . . . . . . . . . . . . . . 1-25
R111 Service Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
R112 Means of Appeals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
R113 Violations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
CRC § 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.
CRC § 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.”
CRC § 1-12 High relevance — show source text
1.9 Division of the State Architect . . . . . . . . . . . . . . . . . . . . 1-12
1.10 Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . 1-15
1.12 State Librarian. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
1.13 Department of Water Resources . . . . . . . . . . . . . . . . . . 1-20
1.14 California State Lands Commission . . . . . . . . . . . . . . . 1-20
DIVISION II – SCOPE AND ADMINISTRATION . . . . . . . . . . . . . . . . . 1-21
PART 1—SCOPE AND APPLICATION. . . . . . . . . . . . . . . . . . . . . . . 1-21
101 Scope and General Requirements. . . . . . . . . . . . . . . 1-21
102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
PART 2—ADMINISTRATION AND ENFORCEMENT . . . . . . . . . . . 1-22
103 Code Compliance Agency . . . . . . . . . . . . . . . . . . . . . . 1-22
104 Duties and Powers of Code Official. . . . . . . . . . . . . . 1-22
105 Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
106 Construction Documents . . . . . . . . . . . . . . . . . . . . . . 1-26
107 Temporary Uses, Equipment and Systems. . . . . . . 1-28
108 Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
109 Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
110 Certificate of Occupancy. . . . . . . . . . . . . . . . . . . . . . . 1-30
111 Service Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
112 Means of Appeals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
CRC § 8.10 High relevance — show source text
1.8.10 Other Building Regulations . . . . . . . . . . . . . . . . . . . . . . 1-13
1.9 Division of the State Architect . . . . . . . . . . . . . . . . . . . . 1-13
1.10 Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . 1-17
1.12 State Librarian. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.13 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.14 California State Lands Commission . . . . . . . . . . . . . . . 1-22
DIVISION II – SCOPE AND ADMINISTRATION . . . . . . . . . . . . 1-23
Part 1—Scope and Application. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
101 Scope and General Requirements. . . . . . . . . . . . . . . 1-23
102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Part 2—Administration and Enforcement . . . . . . . . . . . . . . . . . 1-24
103 Code Compliance Agency . . . . . . . . . . . . . . . . . . . . . . 1-24
104 Duties and Powers of Building Official. . . . . . . . . . . 1-25
105 Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
106 Floor and Roof Design Loads . . . . . . . . . . . . . . . . . . . 1-29
107 Construction Documents . . . . . . . . . . . . . . . . . . . . . . 1-29
108 Temporary Structures, Equipment and Systems . . . . . . . . . . . . . . . . . . . . . 1-31
109 Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
110 Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
111 Certificate of Occupancy. . . . . . . . . . . . . . . . . . . . . . . 1-33
CRC § 8.3 High relevance — show source text
1.8.3 Local Enforcing Agency . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.8.4 Permits, Fees, Applications and Inspections . . . . . . . . 1-7
1.8.5 Right of Entry for Enforcement. . . . . . . . . . . . . . . . . . . . . 1-8
1.8.6 Local Modification by Ordinance or Regulation . . . . . 1-8
1.8.7 Alternate Materials, Designs, Tests and Methods of Construction. . . . . . . . . . . . . . . 1-8
1.8.8 Appeals Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.8.9 Unsafe Buildings or Structures . . . . . . . . . . . . . . . . . . . 1-10
1.8.10 Other Building Regulations . . . . . . . . . . . . . . . . . . . . . . 1-10
1.9 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
1.10 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . 1-10
1.12 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.13 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.14 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
DIVISION II— SCOPE AND ADMINISTRATION . . . . . . . . . . . . . . . . . 1-17
Part 1—Scope and Application. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
R101 Scope and General Requirements. . . . . . . . . . . . . . . 1-17
R102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Part 2—Administration and Enforcement . . . . . . . . . . . . . . . . . 1-18
CRC § 1-5 High relevance — show source text
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . . . . 1-5
DIVISION II— SCOPE AND ADMINISTRATION . . . . . . . . . . . . .1-13
Part 1—General Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
101 Scope and General Requirements . . . . . . . . . . . . . . . 1-13 102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Part 2—Administration and Enforcement . . . . . . . . . . . . . . . . . 1-14
103 Code Compliance Agency . . . . . . . . . . . . . . . . . . . . . . . 1-14 104 Duties and Powers of the Fire Code Official . . . . . . . 1-14
105 Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
106 Construction Documents . . . . . . . . . . . . . . . . . . . . . . . 1-26
107 Temporary Structures, Uses, Equipment and Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
108 Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
109 Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
110 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
111 Service Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
112 Means of Appeals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 113 Violations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
114 Stop Work Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 115 Unsafe Structures or Equipment. . . . . . . . . . . . . . . . . 1-29
CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
CRC § 2.4 Medium relevance — show source text
Court Emergency escape and rescue openings R319.1, R319.2.4 Means of egress R318.1 Natural light R325.1.1 Covering Exterior R703
Interior R702 Roof Chapter 9 Wall Chapter 7 Crawl Space R408
Access R408.4
Damper Fireplace R1001.7.1 Dampproofing R406 Day Care Appendix BD Defined R202 Large family day-care homes R336 Dead Loads R301.4
Decay Protection against R304 Deck
Attachment R318.5 Supported by exterior wall R507 Wood/plastic composite boards R507.2.2
Definitions Building R202 Mechanical system R202 Plumbing R202 Design Criteria R301 Alternative provisions R301.1.1 Application R301.1 Climatic and geographic R301.2 Dead load R301.4
Deflection R301.6 Engineered design R301.1.3
Accessibility R322 Accessory Dwelling Unit R202 Authority to Enforce Automatic Fire Sprinkler Systems 1.8.9.1, R313.2 Accessory Structure Elevations R306.3.2
Energy R330.5 Exterior walls R302.1
Scope R101.2 Addition (see also Existing Buildings) Carbon monoxide alarms R311.2.2 Change of occupancy R110.1 Construction R302.2.3
Frost protection R403.1.4.1 Scope R101.2, R102.6.1 Smoke alarms R310.2.2 Address (Site) R308 Administration, California Chapter 1, Division 1
General 1.1 Dept. of Housing and Community Development 1.8 Office of the State Fire Marshal 1.11 Administration, Division II Chapter 1 Applicability R102 Certificate of occupancy R110 Construction documents R106 Department of building safety R103 Duties and Powers R104
Fees R106
Inspections R109 Means of appeals R112 Permits R105, R105.5.1 Purpose R101.3 Service utilities R111 Stop work order R114 Temporary structures and uses R107 Violations R113 Aging-in-place Design and Fall Prevention R327
Doorbell buttons R327.1.4 Electrical receptacle outlet, switch and control heights R327.1.2 Interior doors R327.1.3 Reinforcement for grab bars R327.1.1 Allowable Spans Of floor joists R502.3, R505.3.2 Of headers R602.7, R603.6 Of rafters and ceiling joists R802.4, R802.5, R804.3.1, R804.3.2 Alternate Materials (see Materials) R104.11 Alterations (see Existing Buildings) Anchor Bolts R403.1.6
Appeal Board of 1.8.8, Appendix AA Means of 1.8.8, R112 Appliance Flue area R1003.14
CRC § 102.4 Medium 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.
CRC § 1-3 Medium relevance — show source text
Appendix G Voluntary Home-Hardening Recommendations.
Appendix G is an informational appendix that provides discussion of some elements of the proposed self-defense mechanisms and their role in enhancing the protection of exposed structures in the wildland-urban interface. The items provided in this appendix provide owners with suggestions for increasing the survivability of their structure. These items are not mandatory but can be considered by owners to increase the safety of structures.
Appendix H Referenced California Documents.
Appendix H contains portions of California statutes and regulations located in other documents. They are reprinted in Appendix H to aid the user in understanding the requirements applicable to wildland-urban interface areas and to provide a background for the provi- sions. Much of the text in the CWUIC is based on the requirements found in these other documents.
Appendix I Board of Appeals.
Appendix I contains the provisions for appeal and the establishment of a board of appeals. The provisions include the application for an appeal, the makeup of the board of appeals and the conduct of the appeal process.
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CONTENTS
CHAPTER 1 ADMINISTRATION. . . . . . . . . . . . . . . . . . . . . . .1-3
DIVISION I CALIFORNIA ADMINISTRATION
1.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . 1-4
1.12 Board of Forestry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
DIVISION II SCOPE AND ADMINISTRATION . . . . . . . . . . . . . 1-15
PART 1—GENERAL PROVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
101 Scope and General Requirements. . . . . . . . . . . . . . 1-15
102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
PART 2—ADMINISTRATION AND ENFORCEMENT . . . . . . . . . . . 1-17
103 Code Compliance Agency . . . . . . . . . . . . . . . . . . . . . 1-17
104 Duties and Powers of the Code Official . . . . . . . . . 1-17
105 Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
106 Construction Documents . . . . . . . . . . . . . . . . . . . . . 1-20
107 Temporary Uses, Equipment and Systems . . . . . . 1-21
CRC § 1-7 Medium relevance — show source text
1.8 Department of Housing and Community Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.8.2 Authority and Abbreviations. . . . . . . . . . . . . . . . . . . . . . . 1-7
1.8.3 Local Enforcing Agency . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.8.4 Permits, Fees, Applications and Inspections . . . . . . . . 1-9
1.8.5 Right of Entry for Enforcement. . . . . . . . . . . . . . . . . . . . . 1-9
1.8.6 Local Modification by Ordinance or Regulation . . . . 1-10
1.8.7 Alternate Materials, Designs, Tests and Methods of Construction. . . . . . . . . . . . . . 1-10
1.8.8 Appeals Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.8.9 Unsafe Buildings or Structures . . . . . . . . . . . . . . . . . . . 1-11
1.8.10 Other Building Regulations . . . . . . . . . . . . . . . . . . . . . . 1-12
1.9 Division of the State Architect . . . . . . . . . . . . . . . . . . . . 1-12
1.10 Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1.11 Office of the State Fire Marshal . . . . . . . . . . . . . . . . . . . 1-15
1.12 State Librarian. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
1.13 Department of Water Resources . . . . . . . . . . . . . . . . . . 1-20
1.14 California State Lands Commission . . . . . . . . . . . . . . . 1-20
DIVISION II – SCOPE AND ADMINISTRATION . . . . . . . . . . . . . . . . . 1-21
PART 1—SCOPE AND APPLICATION. . . . . . . . . . . . . . . . . . . . . . . 1-21
101 Scope and General Requirements. . . . . . . . . . . . . . . 1-21
102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Frequently asked questions
Which buildings does the CRC apply to?
The CRC applies to detached one‑ and two‑family dwellings and townhouses up to three stories above grade plane and their accessory structures, with specific exceptions listed in §R101.2 .
How do referenced codes and standards interact with the CRC?
Referenced codes and standards are considered part of the requirements to the extent cited, but where a conflict exists the CRC’s provisions control; see §R102.4 and related conflict rules in §R102.4.1–R102.4.2 .
Are existing buildings required to meet all new CRC provisions?
Existing lawful occupancies may continue without change unless a specific CRC, International Property Maintenance Code, or California Fire Code provision requires otherwise; additions/alterations generally must meet new‑construction requirements for the work performed (see §R102.6 and §R102.6.1) .
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