Skip to content
ChatProjectCodes

Chapter 1 — SCOPE AND APPLICATION

Section R101

California Residential Code (Title 24, Part 2.5) · 2022 edition · updated 2026-09-12 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

R101.1 Title.

These provisions shall be known as the Resi- dential 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 R313 :

  1. Live/work units located in townhouses and complying with the requirements of Section 508.5 of the California Building Code .

  2. Owner-occupied lodging houses with five or fewer guestrooms.

  3. A care facility with five or fewer persons receiving custodial care within a dwelling unit.

  4. A care facility with five or fewer persons receiving medical care within a dwelling unit.

  5. A care facility for five or fewer persons receiving care that are within a single-family dwelling.

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 fire fighters and emergency responders during emergency operations.

Get a plain-English answer with a citation back to this text.

Ask AI about this code
Export this section
▸Contents — California Residential Code (Title 24, Part 2.5)
California Residential Code (Title 24, Part 2.5)
  1. Chapter 2 — DEFINITIONS AND ABBREVIATIONS
  2. Appendix AF — RADON CONTROL
  3. Appendix AI — PRIVATE SEWAGE
  4. Appendix AJ — EXISTING
  5. Appendix AK — SOUND
  6. Appendix AO — AUTOMATIC
  7. Appendix AR — LIGHT STRAW-CLAY
  8. Appendix AS — STRAWBALE
  9. Appendix AU — COB CONSTRUCTION
  10. Appendix AV — BOARD
  11. Appendix AW — 3D-PRINTED BUILDING
  12. ▸Chapter 1 — SCOPE AND APPLICATION
    Overview
    1. Section 1.2
    2. Section 1.3
    3. Section 1.4
    4. Section 1.5
    5. Section 1.6
    6. Section 1.7
    7. Section 1.8
    8. Section 1.8.2
    9. Section 1.8.3
    10. Section 1.8.4
    11. Section 1.8.5
    12. Section 1.8.6
    13. Section 1.8.7
    14. Section 1.8.8
    15. Section 1.8.9
    16. Section 1.8.10
    17. Section 1.9
    18. Section 1.10
    19. Section 1.11
    20. Section 1.12
    21. Section 1.13
    22. Section 1.14
    23. Section R101
    24. Section R102
    25. Section R103
    26. Section R104
    27. Section R105
    28. Section R106
    29. Section R107
    30. Section R108
    31. Section R109
    32. Section R110
    33. Section R111
    34. Section R112
    35. Section R113
    36. Section R114
    37. Section R201
    38. Section R202
  13. Chapter 3 — BUILDING PLANNING
  14. Chapter 4 — FOUNDATIONS
  15. Chapter 5 — FLOORS
  16. Chapter 6 — WALL CONSTRUCTION
  17. Chapter 7 — WALL COVERING
  18. Chapter 8 — ROOF-CEILING CONSTRUCTION
  19. Chapter 9 — ROOF ASSEMBLIES
  20. Chapter 10 — CHIMNEYS AND FIREPLACES
  21. Chapter 44 — REFERENCED STANDARDS
  22. Appendix AH — PATIO COVERS
  23. Appendix AL — PERMIT FEES
  24. Appendix AQ — TINY HOUSES
  25. Appendix AT — SOLAR-READY PROVISIONS—DETACHED ONE- AND
  26. Appendix AX — SWIMMING POOL SAFETY ACT
  27. Appendix AY — AREAS PROTECTED BY THE FACILITIES
  28. Appendix AZ — EMERGENCY HOUSING

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.