Official title
California Residential Code
Effective dates
January 1, 2023 - Present
Adopts with amendments
International Residential Code 2021 (IRC 2021)
Part I Administrative
Chapter 1 Scope and Application
Part II Definitions
Chapter 2 Definitions
Part III Building Planning and Construction
Chapter 3 Building Planning
Chapter 4 Foundations
Chapter 5 Floors
Chapter 6 Wall Construction
Chapter 7 Wall Covering
Chapter 8 Roof-Ceiling Construction
Chapter 9 Roof Assemblies
Chapter 10 Chimneys and Fireplaces
Part IV Energy Conservation
Part V Mechanical
Part VI Fuel Gas
Part VII Plumbing
Part VIII Electrical
Part IX Referenced Standards
Chapter 44 Referenced Standards
Appendix AA Reserved
Appendix AB Reserved
Appendix AC Reserved
Appendix AD Reserved
Appendix AE Reserved
Appendix AF Radon Control Methods
Appendix AG Reserved
Appendix AH Patio Covers
Appendix AI Private Sewage Disposal
Appendix AJ Existing Buildings and Structures
Appendix AK Sound Transmission
Appendix AL Permit Fees
Appendix AM Reserved
Appendix AO Automatic Vehicular Gates
Appendix AP Reserved
Appendix AQ Tiny Houses
Appendix AR Light Straw-Clay Construction
Appendix AS Strawbale Construction
Appendix AT Solar-Ready Provisions—Detached One- And Two-Family Dwellings and Townhouses
Appendix AU Cob Construction (Monolithic Adobe)
Appendix AV Board of Appeals
Appendix AW 3D-Printed Building Construction
Appendix AX Swimming Pool Safety Act
Appendix AY Areas Protected by the Facilities of the Central Valley Flood Protection Plan
Appendix AZ Emergency Housing
The California Residential Code (CRC) is a set of regulations and standards for structural design, fire safety, energy efficiency, plumbing, mechanical systems, electrical systems, and other aspects of residential construction in the state of California.
The California Residential Code 2022 is based on the International Residential Code 2021 (IRC 2021) with amendments and additions.