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Chapter 1 — ADMINISTRATION

Section 1.8.10 — OTHER BUILDING REGULATIONS

2025 California Existing Building Code (Title 24, Part 10) · 2025 edition · updated 2026-07-29 · California

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

1.8.10.1 Existing structures. Notwithstanding other provisions of law, the replacement, retention and extension of original materials and the use of original methods of construction for any existing building or accessory structure, or portions thereof, shall be permitted in accordance with the provisions of this code as adopted by the Department of Housing and Community Development. For additional information, see California Health and Safety Code, Sections 17912, 17920.3, 17922 and 17958.8.

1.8.10.2 Moved structures. Subject to the requirements of California Health and Safety Code Sections 17922, 17922.3 and 17958.9, local ordinances or regulations relating to a moved residential building or accessory structure thereto, shall permit the replacement, retention and extension of original materials and the use of original methods of construction so long as the structure does not become or continue to be a substandard building.

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▸ Contents — 2025 California Existing Building Code (Title 24, Part 10)
2025 California Existing Building Code (Title 24, Part 10)
  1. ▸ Chapter 1 — ADMINISTRATION
    Overview
    1. Section 1.1 — GENERAL
    2. Section 1.2 — BUILDING STANDARDS COMMISSION
    3. Section 1.3 — BOARD OF STATE AND COMMUNITY CORRECTIONS
    4. Section 1.4 — DEPARTMENT OF CONSUMER AFFAIRS
    5. Section 1.5 — CALIFORNIA ENERGY COMMISSION
    6. Section 1.6 — DEPARTMENT OF FOOD AND AGRICULTURE
    7. Section 1.7 — DEPARTMENT OF PUBLIC HEALTH
    8. Section 1.8 — DEPARTMENT OF HOUSING AND COMMUNITY DEVELOPMENT
    9. Section 1.8.2 — AUTHORITY AND ABBREVIATIONS
    10. Section 1.8.3 — LOCAL ENFORCING AGENCY
    11. Section 1.8.4 — PERMITS, FEES, APPLICATIONS AND INSPECTIONS
    12. Section 1.8.5 — RIGHT OF ENTRY FOR ENFORCEMENT
    13. Section 1.8.6 — LOCAL MODIFICATION BY ORDINANCE OR REGULATION
    14. Section 1.8.7 — ALTERNATE MATERIALS, DESIGNS, TESTS AND METHOD…
    15. Section 1.8.8 — APPEALS BOARD
    16. Section 1.8.9 — UNSAFE BUILDINGS OR STRUCTURES
    17. Section 1.8.10 — OTHER BUILDING REGULATIONS
    18. Section 1.9 — DIVISION OF THE STATE ARCHITECT
    19. Section 1.10 — DEPARTMENT OF HEALTH CARE ACCESS AND INFORMATIO…
    20. Section 1.11 — OFFICE OF THE STATE FIRE MARSHAL
    21. Section 1.12 — STATE LIBRARIAN
    22. Section 1.13 — DEPARTMENT OF WATER RESOURCES
    23. Section 1.14 — CALIFORNIA STATE LANDS COMMISSION
    24. Section 101 — SCOPE AND GENERAL REQUIREMENTS
    25. Section 102 — APPLICABILITY
    26. Section 103 — CODE COMPLIANCE AGENCY
    27. Section 104 — DUTIES AND POWERS OF CODE OFFICIAL
    28. Section 105 — PERMITS
    29. Section 106 — CONSTRUCTION DOCUMENTS
    30. Section 107 — TEMPORARY USES, EQUIPMENT AND SYSTEMS
    31. Section 108 — FEES
    32. Section 109 — INSPECTIONS
    33. Section 110 — CERTIFICATE OF OCCUPANCY
    34. Section 111 — SERVICE UTILITIES
    35. Section 112 — MEANS OF APPEALS
    36. Section 113 — VIOLATIONS
    37. Section 114 — STOP WORK ORDER
    38. Section 115 — UNSAFE STRUCTURES AND EQUIPMENT
    39. Section 116 — EMERGENCY MEASURES
    40. Section 117 — DEMOLITION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — PROVISIONS FOR ALL COMPLIANCE METHODS
  4. Chapter 3A — PROVISIONS FOR ALL COMPLIANCE METHODS
  5. Chapter 4 — REPAIRS
  6. Chapter 4A — REPAIRS
  7. Chapter 5 — PRESCRIPTIVE COMPLIANCE METHOD
  8. Chapter 5A — PRESCRIPTIVE COMPLIANCE METHOD
  9. Chapter 6 — CLASSIFICATION OF WORK
  10. Chapter 7 — ALTERATIONS—LEVEL 1
  11. Chapter 8 — ALTERATIONS—LEVEL 2
  12. Chapter 9 — ALTERATIONS—LEVEL 3
  13. Chapter 10 — CHANGE OF OCCUPANCY
  14. Chapter 11 — ADDITIONS
  15. Chapter 12 — HISTORIC BUILDINGS
  16. Chapter 13 — PERFORMANCE COMPLIANCE METHODS
  17. Chapter 14 — RELOCATED OR MOVED BUILDINGS
  18. Chapter 15 — CONSTRUCTION SAFEGUARDS
  19. Chapter 16 — REFERENCED STANDARDS
  20. Appendix A — GUIDELINES FOR THE SEISMIC RETROFIT OF EXISTING B…
  21. Appendix B — SUPPLEMENTARY ACCESSIBILITY REQUIREMENTS FOR EXIS…
  22. Appendix C — GUIDELINES FOR THE WIND RETROFIT OF EXISTING BUIL…
  23. Appendix D — BOARD OF APPEALS
  24. Appendix E — TEMPORARY EMERGENCY USES
  25. Appendix A — GUIDELINES ON FIRE RATINGS OF ARCHAIC MATERIALS A…

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