CRC · California Residential Code

Accessibility, egress and special-occupancy referenced standards

Guidance and primary section pointers for residential accessibility, egress and referenced standards in the California Residential Code.

Last reviewed: July 6, 2026

Overview

This area of the California Residential Code (CRC) gathers the requirements and referenced standards that govern accessibility, means of egress, and special-occupancy elements for one- and two‑family dwellings and townhouses regulated under the CRC. The Residential Code scope and purpose explain that these provisions exist to protect life safety, provide access for people with disabilities, and set minimum egress and special‑use criteria for residential construction and alterations . Where the CRC defers to broader accessibility and egress rules it does so in coordination with the California Building Code (CBC) accessibility chapters and means‑of‑egress provisions (Chapters 11A/11B and Chapter 10 of the CBC) .

Key CRC sections to know include the means‑of‑egress and emergency openings provisions (for example, § R318 and § R319), the accessibility and accessible‑equipment rules (for example, § R322 and § R323), and the component sections on handrails, guards and glazing (§ R320, § R321, § R324). The CRC also incorporates a comprehensive list of external referenced standards (Part IX, Chapter 44) that become enforceable to the extent they are cited in the Code—so many technical details (products, hardware, testing standards) live in that referenced‑standards chapter rather than in prescriptive text alone .

In this section

Code references

Grounded in the retrieved California Residential Code — click a citation to read the verbatim passage:

  • CRC § 2103.4 Medium relevance — show source text

    Reinforcement

    Masonry 2103.4 Shotcrete 1908 Religious Worship, Places of Accessibility Chapter 11B Alarms and detection 907.2.1 Balcony 1030.5 Classification 303.1.4, 303.4, 305.1.1, 305.2.1, 308.5.2 Door operations 1010.2.9 Egress 1030 Interior finishes Table 803.13, 804 Unlimited area 507.6, 507.7 Relocating, Building 101.4.7, 107.2.8, 3113 Compliance 3113.1.1 Inspection agencies 3113.4 Manufacturer’s data plate 3113.3 Supplemental information 3113.2 Repairs, Building 101.4.7, 202 Flood 1612.1

    Minor 105.2.2

    Permit required 105.1 Roof, Reroofing 1509, 1512 Residential Hotels (mail receptacles) 420.13.1 Residential Occupancy (Group R) 310 Accessibility Chapter 11A, 11B Alarm and detection 907.2.8, 907.2.9, 907.2.11, 907.2.12, 907.5.2.3.2,

    907.5.2.3.3

    Area 503, 505, 506, 508, 510 Carbon monoxide alarms 915 Cooking 420.10, 420.11 Draftstopping 708.4.3, 718.4 Group provisions Group R-1 (transient) 310.2 Group R-2 (apartment) 310.3 Group R-3 (two dwellings per building) 310.4 Group R-4 (group homes) 310.5 Electric vehicle charging 420.14 Height 503, 504, 505, 508, 510 Incidental uses 509

    Interior finishes Table 803.13, 804 Live load Table 1607.1

    Live/work units 508.5 Means of egress Aisles 1018.5

    Corridors 1020.2, 1020.3

    Doors 1010.1.1 Emergency escape and rescue 1031.2

    Exit signs 1013.1, 1013.2 Single exits 1006.3 Stairway, exit access 1019 Travel distance 1006.3.3, 1017.2,

    1006.2.1

    Mixed occupancies 508.3, 508.4 Accessory 508.2, G112.1 Live/work units 508.5 Parking, private 406.2.8, 406.3 Parking below/above 510.4, 510.7, 510.9

    Special mixed 510.2

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    INDEX

    Means of egress 3310 Protection of pedestrians 3306 Sanitary facilities 3305 Site work 3304

  • CRC § 1511.9 Medium relevance — show source text

    Railing (see Guards And Handrails) Raised-deck System 1511.9 Ramps 1012 Assembly occupancy 1030.14 Construction 1012.2, 1012.5.3, 1012.7,

    1012.10

    Exit 1023

    Exit access 1019

    Exterior 1027

    Guards 1012.9, 1015, 1607.9 Handrails 1012.8, 1014, 1607.9 Interior 1012.2 Landings 1012.6 Parking garage 406.4.3 Slope 1012.2 Recreational Facilities Accessibility Chapter 11B Amusement rides Chapter 11B Play structure 402.6.3, 424 Special amusement areas (see Amusement Areas, Special) Referenced Standards Chapter 35 Applicability 102.3, 102.4 Fire resistance 703.2

    List Chapter 35 Organizations Chapter 35 Reformatories

    [see Institutional (Group I-3)] 308.4 Refrigeration (see Mechanical) 101.4.2 Machinery room 1006.2.2.2

    Refuge Areas (see Horizontal Exit, Smoke Compartments, Storm Shelters) 407.5.3, 408.6.2, 420.6.1, 422.3.2, 423, 423.3, 423.4, 1026.4 Refuse Chute 713.13

    Reinforcement

    Masonry 2103.4 Shotcrete 1908 Religious Worship, Places of Accessibility Chapter 11B Alarms and detection 907.2.1 Balcony 1030.5 Classification 303.1.4, 303.4, 305.1.1, 305.2.1, 308.5.2 Door operations 1010.2.9 Egress 1030 Interior finishes Table 803.13, 804 Unlimited area 507.6, 507.7 Relocating, Building 101.4.7, 107.2.8, 3113 Compliance 3113.1.1 Inspection agencies 3113.4 Manufacturer’s data plate 3113.3 Supplemental information 3113.2 Repairs, Building 101.4.7, 202 Flood 1612.1

    Minor 105.2.2

    Permit required 105.1 Roof, Reroofing 1509, 1512 Residential Hotels (mail receptacles) 420.13.1 Residential Occupancy (Group R) 310 Accessibility Chapter 11A, 11B Alarm and detection 907.2.8, 907.2.9, 907.2.11, 907.2.12, 907.5.2.3.2,

    907.5.2.3.3

  • CRC § 0.30 Medium relevance — show source text

    CK105.1 Windows, minimum size and dimensions. A minimum of one window shall be provided that meet the minimum size, mini- mum dimensions and operational constraints of Section R310. The number of such windows shall be appropriate for the occupancy or occupancies of the portions of the building that are below WSEL200.

    Note: It is the intent of this section that windows be of sufficient number, sizes and dimensions to reasonably accommodate the needs and limitations of the occupants of the building. Reasonable judgment in the application of this requirement must be exer- cised by the building official.

    CK105.2 Exterior doors to decks, balconies and porches. Exterior doors to decks, balconies and porches shall be sized in accor- dance with Section R311.

    CK105.3 Means of escape to rooftops from spaces within a building. The means of escape to rooftops shall be permitted to be provided by a stairway, ramp, alternating tread device, fixed ladder or other means approved by the building official.

    CK106 Decks and balconies that are evacuation locations. Decks and balconies that have finish floors no less than one (1) foot (0.30 meter) above the WSEL200 shall be permitted to be evacuation locations. When a deck or balcony used as an evacuation location is not at the same level as a floor within the building, it shall be permitted to be accessed by a stairway, ramp, alternating tread device, fixed ladder or other means approved by the building official.

    CK106.1 Live load. Decks and balconies that are evacuation locations shall be designed for the live load required in Table R301.5.

    CK106.2 Evacuation route. Evacuation routes to decks and balconies that are evacuation locations shall be permitted to be provided by a stairway, ramp, alternating tread device, fixed ladder or other means approved by the building official.

    CK107 Rooftop evacuation locations. Rooftop evacuation locations shall be permitted to include rooftop platforms and rooftop areas provided that they are no less than one (1) foot (0.30 meter) above the WSEL200. A minimum horizontal distance of 3 feet (0.91 meter) shall be provided between the lower edge of the rooftop evacuation location access point and the evacuation location lower perimeter.

    CK107.1 Rooftop platforms required. A rooftop platform shall be provided if the roof covering materials are: 1. Clay tile, concrete tile, slate shingles, wood shingles or wood shakes and the roof slope is three units vertical in 12 units hori- zontal (25 percent slope) or greater. 2. Metal roof panels or metal roof shingles and the roof slope is one unit vertical in 12 units horizontal (8.33 percent slope) or greater.

    CK107.2 Roof live loads. Roof areas that are rooftop evacuation locations and roofs that support rooftop platforms that are evacua- tion locations shall be designed for the roof live load required for the occupancy as required in CBC Table 1607.2.

    CK107.3 Evacuation routes to rooftop evacuation locations. Evacuation routes to rooftop evacuation locations shall be permitted to be provided by a stairway, ramp, alternating tread device, fixed ladder or other means approved by the building official.

    APPENDIX CK-4 2025 CALIFORNIA RESIDENTIAL CODE

  • CRC § 407.2.3 Medium relevance — show source text

    Elevators 11B-407.2.3, 11B-411.2.3. Fire alarms 11B-703 Fire and life safety systems 904.3.4, 907.4.2.4, 916.9. Housing accessibility 1110A.2, 1116A.4, 1125A.4, 1127A.7, 1143A.0. Means of egress 1009.9, 1013.0, 1023.8-1023.11.

    New or altered 11B-216. Parking facilities 1109A.8.8.1. Parking spaces 11B-502.6 through 11B- 502.6.3, 11B-502.8. Requirements based on occupancy and use 402.6.4.

    Special amusement areas 411.6. Stairways 11B-504.8. Transportation facilities 11B-810.4, 11B-810.6 Signs 3107, Appendix H Accessibility 1013.4, Chapter 11B Accessible means of egress 1009.8.2, 1009.9, 1009.11 Animated devices H108

    Construction H105, H107 Covered and open mall building 402.6.4

    Doors 1010.2.4, 1010.2.11, 1010.2.12 Electrical H106

    Elevators 1124A, 3002.3, 3007.6.5,

    3008.6.5 Encroachment, public right-of-way 3202.3.1

    Exit 1013, 2702.2 Floor loads 106.1

    Ground H109 Height limitation H109.1, H112.4 Illumination H106.1

    Luminous 403.5.5, 1013.5, 1025

    Marquee H113 Obstruction 1003.3.2, 1003.3.3, H103 Occupant load, assembly 1004.9 Parking spaces 11B-502 Plastic 2611, D102.2.10 Portable H114

    Projecting H112 Protruding objects 1003.3 Roof H110 Stairway identification 1023.8, 1023.9 Standpipe control valve 905.7.1 Toilet room 11B-216.8 Transportation Chapter 11B Variable message 11B-216.13 Walls 703.4, H111 Site Class 1603.1.5, 1613.2 Site Drawings 107.2.6 Site Work 3304 Skilled Nursing and Intermediate-care Facilities [OSHPD 2] 1225 Application 1225.2 Definitions 1225.3

  • CRC § 1010.4.1 Medium relevance — show source text

    1010.4.1

    Power-operated 1010.3.2 Revolving 1010.3.1 Security 402.8.8, 1010.2.9, 1010.3.4 Sensor release 1010.2.11 Side swinging 1010.1.2 Smoke 710.5

    Stairways 1010.2.6 Stairways, high-rise 403.5.3 Structural testing, exterior 1709.5 Thresholds 1003.5, 1010.1.4, 1010.1.6 Vestibule 1010.1.7

    Width 1010.1.1, 1010.1.1.1 Dormitories 310.3, 310.4, 420.11.1 Accessibility Chapters 11A and 11B Cooking 420.11, 904.15 Fire alarms and smoke alarms 420.5

    Separations 420.2, 420.3 Sprinkler protection 420.4 Draftstopping 202 Attics 718.4 Floor-ceiling assemblies 718.3 Drinking Fountains 11B-211, 11B-602, 11B-602.10 Drinking Fountains and Bottle-Filling Stations 11B-211, 11B-602, 11B-602.10 Dry Cleaning Plants 415.9.3 Drying Rooms 417 Dumbwaiters 713.14 Dwelling Units 310.3, 310.4 Accessibility Chapters 11A and 11B Alarms and detection 420.5, 907.2.12, 907.2.8, 907.2.9 Area 1208.4, 1208.5 Efficiency dwelling unit 1208.5 Group R310 Live/work units (see Live/work Units) Plumbing fixtures required Chapter 29 Scoping 101.2 Separation 420.2, 420.3 Sleeping Loft Appendix P Sound transmission 1206

    Sprinkler protection 420.4, 903.2.8

    Earthquake Loads (see Seismic) 1613 Earthquake Recording Equipment Appendix L Eaves (See Combustible Projections and Cornices) Educational Occupancy (Group E)

    305 Accessibility Chapter 11B Alarms and detection 907.2.3

    Area 503, 505, 506, 507, 508 Height 503, 504, 505, 508 Incidental uses 509

    Interior finishes Table 803.13, 804 Live load Table 1607.1 Locking 1010.2.12, 1010.2.7 Means of egress Aisles 1018.2, 1018.5 Corridors 1020.2, 1020.3 Panic hardware 1010.2.8

    Stairway, exit access 1019 Travel distance 1006.2.1, 1006.3.3, 1017.2 Mixed occupancies 508.3, 508.4 Accessory 303.1.3, 508.2 Assembly 303.1.3 Child care 305.2, 308.4, 310.4.

  • CRC § 3-33 Medium relevance — show source text

    R304 Protection of Wood and Wood-Based Products

    Against Decay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

    R305 Protection Against Subterranean Termites. . . . . . . 3-35

    R306 Flood-Resistant Construction. . . . . . . . . . . . . . . . . . . 3-36

    R307 Storm Shelters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

    R308 Site Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

    R309 Automatic Sprinkler Systems . . . . . . . . . . . . . . . . . . . 3-41

    R310 Smoke Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54

    R311 Carbon Monoxide Alarms. . . . . . . . . . . . . . . . . . . . . . . 3-58

    R312 Minimum Room Areas . . . . . . . . . . . . . . . . . . . . . . . . . 3-59

    R313 Ceiling Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-59

    R314 Mezzanines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-60

    R315 Sleeping Lofts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-60

    R316 Habitable Attics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61

    R317 Garages and Carports. . . . . . . . . . . . . . . . . . . . . . . . . . 3-61

    R318 Means of Egress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62

    R319 Emergency Escape and Rescue Openings . . . . . . . . 3-65

    R320 Handrails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-67

    R321 Guards and Window Fall Protection . . . . . . . . . . . . . 3-67

    R322 Accessibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-68

    R323 Elevators and Platform Lifts . . . . . . . . . . . . . . . . . . . . 3-68

    R324 Glazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-68

  • CRC § 1.5.2 Medium relevance — show source text

    1.5.2_||||X|||||||||||||||||||| |R109.1.5.3||||X|||||||||||||||||||| |R109.1.6|||X|X|||||||||||||||||||| |R109.1.6.1||||X|||||||||||||||||||| |R109.1.6.2||||X|||||||||||||||||||| |R109.2 - R109.4|||X||||||||||||||||||||| |R110 - R110.4|||X||||||||||||||||||||| |R111 - R111.3|||X||||||||||||||||||||| |R113.1 - R113.2|||X||||||||||||||||||||| |R114.1 - R114.4|||X|||||||||||||||||||||

    The state agency does not adopt sections identified with the following symbol: †

    1-2 2025 CALIFORNIA RESIDENTIAL CODE

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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 Residential Code, may be cited as such and will be referred to herein as “this code.” The California Residential Code is Part 2.5 of thirteen parts of the official compilation and publication of the adoption, 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 Residential Code of the International Code Council with necessary California amendments.

    1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation and energy conservation; safety to life and property from fire and other hazards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

    1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replacement, repair, equip- ment, use and occupancy, location, maintenance, removal and demolition of every detached one- and two-family dwelling and townhouse not more than three stories above grade plane in height with a separate means of egress and structures accessory thereto throughout the State of California.

    Exceptions: 1. Live/work units complying with the requirements of Section 508.5 of the California Building Code shall be permitted to be constructed as one- and two-family dwellings or townhouses in accordance with this code, as applicable. Fire suppression required by Section 508.5.7 of the California Building Code when constructed under the California Residential Code for one- and two-family dwellings shall conform to Section 903.3.1.3 of the California Building Code. 2. Owner-occupied lodging houses with five or fewer guestrooms shall be permitted to be constructed in accordance with the California Residential Code for one- and two-family dwellings when equipped with a fire sprinkler system in accordance with Section R309.

    1.1.3.1 Classification. Structures or portions of structures shall be classified with respect to occupancy in one or more of the groups _listed in Chapter 3 of the California Building Code.

  • CRC § 44-2 Medium relevance — show source text

    44-2 2025 CALIFORNIA RESIDENTIAL CODE

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    Part IX— Referenced Standards

    44 REFERENCED STANDARDS

    Notwithstanding California laws and regulations, these referenced standards shall be applicable only to those California Residential Code sections that are adopted.

    User notes:

    About this chapter: The one- and two-family dwelling code contains numerous references to standards promulgated by other organizations that are used to provide requirements for materials, products and methods of construction. Chapter 44 contains a comprehensive list of all standards that are referenced in this code. These standards, in essence, are part of this code to the extent of the reference to the standard.

    This chapter lists the standards that are referenced in various sections of this document. The standards are listed herein by the promulgating agency of the standard, the standard identification, the effective date and title, and the section or sections of this document that reference the standard. The application of the referenced standards shall be as specified in Section R102.4.

    ABTG Applied Building Technology Group LLC6300 Enterprise Lane Madison, WI 53719

    ANSI/ABTG FS 100—2012 (R2018): Standard Requirements for Wind Pressure Resistance of Foam Plastic Insulation Sheathing Used in Exterior Wall Covering Assemblies

    R303.8

    ACCA Air Conditioning Contractors of America 1330 Braddock Place, Suite 350 Alexandria, VA 22314

    ANSI/ACCA 2 Manual J—2016: Residential Load Calculation

    Table R301.2

    ACI American Concrete Institute 38800 Country Club Drive Farmington Hills, MI 48331

    318—19: Building Code Requirements for Structural Concrete R402.2, R404.1.3, R404.1.3.1, Table R404.1.3.2(2), Table R404.1.3.2(5), Table R404.1.3.2(6), Table R404.1.3.2(7), Table R404.1.3.2(8), R404.1.3.3, R404.1.3.4, R404.1.4.2, R404.5.1, R608.1, R608.1.1, R608.1.2, R608.2, R608.5.1, R608.6.1, R608.8.2, R608.9.2, R608.9.3

    332—20: Residential Code Requirements for Structural Concrete

    R402.2, R403.1, R404.1.3, R404.1.3.4, R404.1.4.2, R506.1

    AISI American Iron and Steel Institute 25 Massachusetts Avenue, NW Suite 800 Washington, DC 20001

    AISI S100—16 (2020) w/S2—20: North American Specification for the Design of Cold-Formed Steel Structural Members, 2016 Edition (Reaffirmed 2020), with Supplement 2, 2020 Edition

    R608.9.2, R608.9.3

    AISI S220—20: North American Standard for Cold-Formed Steel Nonstructural Framing, 2020 Edition

    R702.3.3

    AISI S230—19: North American Standard for Cold-Formed Steel Framing—Prescriptive Method for One and Two Family Dwellings, 2019 Edition

  • CRC § 110.3.4 Medium relevance — show source text

    Frame 110.3.4 Lath gypsum panel products 110.3.6, 2503 Liability 104.8 Masonry 110.3.11, 1705.4 Preliminary 110.2 Required 110.3 Right of entry 104.4 Seismic 1705.13

    Smoke control 909.18.8, 1705.19 Soils 110.3.11, 1705.6 Special (see Special Inspections and Tests) 110.3.11, 1704, 1705 Sprayed fire-resistant materials 1705.15 Sprinkler protection 903.5 Steel 110.3.11, 110.3.4, 1705.2 Third party 110.4 Welding 110.3.11, 1705.2 Wind 110.3.11, 1705.12 Wood 110.3.11, 1705.5 Institutional I-1 [see Institutional Occupancy (see Group I) and Residential (see Group s R-4 and R-2.1 )] Accessibility Chapter 11B Assisted toileting and bathing Chapter 11B Alarm and detection 420.5, 907.2.9, 907.2.9.4, 907.2.11.2, 907.2.11.2.1, 907.2.13, 907.5.1.1, 907.5.2.3.2 Combustible decorations 806.1 Cooking 420.9 Means of egress Aisles 1018.5

    Corridors 1020.2

    Stairway, exit access 1019 Travel distance 1006.3, 1017.2 Separation 420.2, 420.3, 420.6 Sprinkler protection 420.4, 903.2.8 Institutional I-2 [see Institutional Occupancy (see Group I)] 308.3, 407 Accessibility Chapter 11B Assisted toileting and bathing Chapter 11B Alarms and detection 407.8, 407.9 Care suites 407.4.4

    Combustible decorations 806.1 Cooking 407.2.6, 407.2.7 Electrical systems 407.11, 2702.2 Hyperbaric facilities 425 Means of egress 407.4

    Aisles 1018.5

    Corridors 407.2, 407.3, 407.4, 1020.3, 407.4.3 Doors 407.3.1, 407.2.6, 1010.2.13, 1010.2.11, 407.4.4.3, 407.4.4.5,

    407.6

    Hardware 1010.2.9, 1010.2.13,

    407.4.1.1 Lighting 1008.2, 1008.2.4 Stairway, exit access 1019.4 Stairways, exterior exit 1027.2 Travel distance 407.4.2 Medical gas systems 427 Occupancy condition 308.3.1 Smoke barriers 407.5 Smoke compartment 407.2.1, 407.2.3, 407.5

  • CWUIC § 2025 Medium relevance — show source text

    2025 CALIFORNIA BUILDING CODE xiii

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    Chapter 7 Fire and Smoke Protection Features.

    Chapter 7 provisions present the fundamental concepts of fire performance that all buildings are expected to achieve in some form. This chapter identifies the acceptable materials, techniques and methods by which proposed construction can be designed and evaluated against to determine a building’s ability to limit the impact of fire.

    Chapter 7A Materials and Construction Methods for Exterior Wildfire Exposure.

    Requirements for Wildland-Urban Interface Areas are now located in Part 7 of Title 24, California Wildland-Urban Interface Code. The provisions of Part 7, California Wildland-Urban Interface Code, shall apply to buildings and structures located in the wildland-urban interface (WUI) or Fire Hazard Severity Zone.

    Chapter 8 Interior Finishes.

    Chapter 8 contains the performance requirements for controlling fire growth within buildings by restricting interior finish and decorative materials. The provisions of Chapter 8 require materials used as interior finishes and decorations to meet certain flame-spread index or flame-propagation criteria based on the relative fire hazard associated with the occupancy.

    Chapter 9 Fire Protection and Life Safety Systems.

    Chapter 9 prescribes the minimum requirements for active systems of fire protection equipment to perform the following functions: detect a fire, alert the occupants or fire department of a fire emergency, and control smoke and control or extinguish the fire. Generally, the requirements are based on the occupancy, the height and the area of the building, because these are the factors that most affect firefighting capabilities and the relative hazard of a specific building or portion thereof. This chapter parallels and is substantially duplicated in Chapter 9 of the CFC; however, the CFC Chapter 9 also contains periodic testing criteria that are not contained in the CBC. In addition, the special fire protection system requirements based on use and occupancy found in CBC Chapter 4 are duplicated in CFC Chapter 9 as a user convenience.

    Chapter 10 Means of Egress.

    The criteria in Chapter 10 regulating the design of the means of egress system are established as the primary method for protection of occupants by allowing timely relocation or evacuation. Both prescriptive and performance language is utilized for determination of a safe exiting system. It addresses all portions of the means of egress system (i.e., exit access, exits and exit discharge) and includes design requirements as well as provisions regulating individual components. The requirements detail the size, arrangement, number and protection of means of egress components. The means of egress protection requirements work in coordination with other sections of the code, such as protection of vertical openings (see Chapter 7), interior finish (see Chapter 8), fire suppression and detection systems (see Chapter 9) and numerous others, all having an impact on life safety. Chapter 10 of the CBC is duplicated in Chapter 10 of the CFC; however, the CFC contains one additional section on the maintenance of the means of egress system in existing buildings.

    Chapter 11 Reserved.

    Chapter 11A Housing Accessibility. Chapter 11B Accessibility to Public Buildings, Public Accommodations, Commercial Buildings and Public Housing.

    Verify compliance with accessibility provisions. In order to be considered as accessible, buildings and their individual elements must comply with the applicable scoping and technical provisions of Chapter 11A and/or Chapter 11B.

    Chapter 12 Interior Environment.

  • CRC § 405.7 Medium relevance — show source text

    Stairways, exit access 1019 Underground buildings 405.7 Exit Discharge (see Means Of Egress) 1023.12.1, 1023.3, 1024.4, 1028, 1029 Atrium 404.11

    Barriers 1023.8

    Courts 1029

    Exit passageway 1024.4 Horizontal exit 1028.2

    Lobbies 1028.2

    Marquees 3106.4 Public way 1028.5 Termination 1023.3

    Vestibules 1028.2 Exit Signs 1013 Accessibility 1013.4 Floor level exit signs 1013.2 Group R-1 1013.2 Illumination 1013.3, 1013.5, 1013.6 Required 1013.1 Special amusement buildings 411.4 Explosive Table 414.5.1, Table 415.6.5 Detached building 415.6.5, 415.8 Explosion control 414.5.1 Exposure Category (See Wind Load) 1609.4 Exterior Areas for Assisted Rescue

    Requirements 1009.7 Signage 1009.9, 1009.10, 1009.11 Where required 1009.2 Exterior Insulation and Finish Systems (EIFS) 1407 Special inspection 1705.17

    INDEX

    Exterior Wall (see Walls, Exterior) 107.2.4, Table 601, 602, 705, Chapter 7A, Chapter 14 Factored Load 1604.2 Factory Occupancy (Group F) 306 Alarm and detection 907.2.4

    Area 503, 503.1.1, 505, 506, 507, 508 Equipment platforms 505.3 Groups Low-hazard occupancy 306.3 Moderate-hazard occupancy 306.2 Height 503, 504, 505, 508 Incidental uses 509

    Interior finishes Table 803.13, 804 Live load Table 1607.1 Means of Egress Aisles 1018.5

    Dead end corridor 1020.5

    Stairway, exit access 1019 Travel distance 1006.2, 1006.3, 1017.2, 1017.2.2, 1006.2.1 Mixed occupancies 508.2, 508.3, 508.4 Plumbing fixtures Chapter 29 Risk category Table 1604.5 Sprinkler protection 903.2.4 Unlimited area 507.3, 507.4, 507.5 Farm Buildings Table 1604.3, Appendix C Fees, Permit 109 Refunds 109.6

    Related fees 109.5 Work commencing before issuance 109.4

  • CRC § 1.1.11. Medium relevance — show source text

    Chapter 10 Change of Occupancy.

    The purpose of Chapter 10 is to address existing buildings that are subject to a change of occupancy. This chapter is an assembly of requirements to upgrade safety without having to comply fully as a new building. A change of occupancy classification is considered a change of occupancy, however, it will involve a higher level of regulation since the use of the building has made a more significant change.

    2025 CALIFORNIA EXISTING BUILDING CODE xiii

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    Chapter 11 Additions.

    Chapter 11 provides the requirements for additions, which are considered new construction. The requirements focus on safely integrating the addition with the existing building. This includes issues such as limiting the overall height and area of the building where the addition is not separated by a fire wall.

    Chapter 12 Historic Buildings —Reserved

    Chapter 12 is not adopted by the State of California. Historic buildings and structures shall comply with Part 8, Title 24, California Code of Regulations.

    Chapter 13 Performance Compliance Methods.

    Chapter 13 allows for existing buildings to be evaluated to show that alterations or a change of occupancy, while not meeting new construction requirements, will provide a level of safety to demonstrate compliance. Provisions are based on a numerical scoring system involving 21 safety parameters where, when evaluated, such buildings must meet a minimum overall safety score.

    Chapter 13 is not adopted by the State of California but may be available for adoption by local ordinance, see Section 1.1.11. See Section 104.11 for consideration of alternative means of compliance.

    Chapter 14 Relocated or Moved Buildings.

    Chapter 14 is applicable to any building that is moved or relocated. This chapter is independent of any of the three compliance methods and focuses on the structural loads where the building is being relocated.

    Chapter 15 Construction Safeguards.

    Chapter 15 establishes specific regulations in order to minimize the risk to the public and adjacent property during construction. Additionally, this chapter addresses fire and life safety and means of egress during the construction process. This includes requirements for a site safety plan. This chapter is also consistent with Chapter 33 of the CBC and Chapter 33 of the California Fire Code (CFC).

    Chapter 16 Referenced Standards.

    Chapter 16 lists all of the product and installation standards and codes that are referenced throughout Chapters 1 through 15 and includes identification of the promulgators and the section numbers in which the standards and codes are referenced. As stated in Section 102.4, these standards and codes become an enforceable part of the code (to the prescribed extent of the reference) as if printed in the body of the code.

    Appendix A Guidelines for the Seismic Retrofit of Existing Buildings.

    Appendix A provides guidelines for upgrading the seismic resistance capacity of different types of existing buildings. It is organized into separate chapters which deal with buildings of different types, including unreinforced masonry buildings, reinforced concrete and reinforced masonry wall buildings, and lightframe wood buildings. This appendix includes its own referenced standards.

    Appendix B Supplementary Accessibility Requirements for Existing Buildings and Facilities.

    Chapters 11A and 11B of the CBC contain provisions that set forth requirements for accessibility to buildings and their associated sites and facilities for people with physical disabilities. Appendix B was added to address accessibility in construction for items that are not typically enforceable through the traditional building code enforcement process.

    Appendix C Guidelines for the Wind Retrofit of Existing Buildings.

Frequently asked questions

What sections of the CRC contain the residential accessibility and egress rules?

The primary residential provisions are collected in the planning and life‑safety chapters and include § R318 (Means of Egress), § R319 (Emergency Escape and Rescue Openings), § R320 (Handrails), § R321 (Guards and Window Fall Protection), § R322 (Accessibility) and § R323 (Elevators and Platform Lifts); refer to those sections for the CRC text and to Chapter 44 for the referenced standards .

When do I need to follow CBC Chapter 11A/11B instead of CRC accessibility text?

The CRC coordinates with the CBC: when housing accessibility or public‑accessibility scoping and technical rules apply beyond single‑family residential scope, the CBC Chapters 11A (housing accessibility) and 11B (public accessibility) provide the governing technical provisions; the CRC points designers and enforcement officials to those chapters where applicable .

Where are the referenced product and test standards that the CRC requires listed?

Referenced standards used throughout the CRC are compiled in Part IX — Chapter 44 (Referenced Standards). That chapter lists the promulgating organization, standard ID and the specific CRC sections that reference each standard, and those standards are enforceable to the extent cited .

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