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Title 15 — BUILDINGS AND CONSTRUCTION

Chapter 15.09 — CALIFORNIA RESIDENTIAL CODE

Orinda Municipal Code · 2026-09 edition · updated 2026-09-29 · Orinda

15.09.010 - Adoption. A. The 2025 California Residential Code ("CRC"), as amended by the changes, additions, and deletions set forth in this chapter and other chapters of this title, is adopted by this reference as though fully set forth. Section numbers used below are those of the 2025 California Residential Code. B. At least one copy of this building code is now on file in the office of the City Clerk and the City Building Department; the other requirements of Government Code Section 50022.6 have been and shall be complied with. C. As of the effective date of the ordinance codified in this chapter, the provisions of the residential code are controlling and enforceable within the city. D. Sections R103 and R112 of CRC Chapter 1 (Scope and Application) are deleted. E. In Section R105.2 (Work exempt from permit) of CRC Chapter 1 (Scope and Application), subsection 3 is amended to read: 3.

Retaining walls that are not more than 3 feet in height measured from the top of the footing to the top of the wall and that have a downward ground slope at the bottom of the retaining wall not exceeding 1(vertical):10(horizontal), unless supporting a surcharge or ground slope exceeding 1(vertical):2(horizontal) or impounding class I, II, or III-a liquids. F. Section R106.1.1 (Information on Construction Documents) of CRC Chapter 1 (Administration) is amended to read: 106.1.1 Information on Construction Documents. Construction documents shall include dimensions and shall be drawn to scale on suitable material. Electronic media documents may be submitted when approved in advance by the building official. Construction documents shall be of sufficient clarity to indicate the location, nature, and extent of the work proposed and to show in detail that it will conform to this code and all relevant laws, ordinances, rules, and regulations. The first sheet of each set of plans shall include contact information for the owner and the person or persons who prepared the plans. Plans shall include a plot plan showing all existing property lines labeled and fully dimensioned, the elevations of the top and toe of cuts and fills, and the location of the proposed building with distances to all property lines and to every existing building on the property. Instead of detailed specifications, the county building official may approve references on the plans to a specific section or part of this code or other ordinances or laws. G. Section R109.1.1 (Foundation inspection) of CRC Chapter 1 (Administration) is amended by adding the following to the end of that section: At the time of first inspection by the county building official, a California licensed Land Surveyor or Civil Engineer shall certify in writing that the structure is placed according to the approved set of plans. The written certification must include the site address and permit number. This requirement does not apply to alterations or repairs to existing structures that do not affect the exterior limits of the existing structures. H. Section R310.8.1.1 is added to Section R310.8 (Existing Group R-3 occupancies) of CRC Chapter 3 (Building Planning), to read: R310.8.1.1 Existing flat roof buildings. In existing flat roof buildings, the installation of a smoke detector that complies with Section R310.6 shall be required when a pitched roof is added on top of the existing flat roof and the solid sheathing of the flat roof is not removed. I. Section R602.10.3(3) (Bracing Requirements Based on Seismic Design Category) of CRC Chapter 6 (Wall Construction) is amended as follows: 1. The title of Table R602.10.3(3) is amended to read:

TABLE R602.10.3(3) i 2. Footnote "i" is added to Table R602.10.3(3), to read: i   Method GB is not permitted and the use of Method PCP is limited to one-story dwellings and accessory structures. J. Section R602.10.4.5 (Limitations on methods GP and PCP) is added to Section R602.10.4 (Construction methods for braced wall panels) of CRC Chapter 6 (Wall Construction), to read: R602.10.4.5 Limits on methods GB and PCP. Method GB is not permitted, but gypsum board is permitted to be installed on the opposite side of the studs from other types of braced wall panel sheathing. The use of Method PCP is limited to one-story dwellings and accessory structures. K. Appendix BB, Appendix BF, Appendix BJ, and Appendix CI of the CRC are incorporated into the Orinda Building Code. (Ord. No. 11-01, § 4(exh. A), 4-12-11; Ord. No.14-01, § 4(App. A), 2-4-14; Ord. No. 17-01, § 4(App. A), 1- 24-17; Ord. No. 20-03, § 4(App. A), 2-18-20; Ord. No. 23-01, § 3(App. A), 1-17-23; Ord. No. 25-07, § 3(App. A), 1-13-26) Note— Formerly entitled Amendments to CRC, which was amended by Ord. No. 14-01.

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▸Contents — Orinda Municipal Code
Orinda Municipal Code
  1. Title 1 — GENERAL PROVISIONS
  2. Title 2 — ADMINISTRATION AND PERSONNEL
  3. Title 3 — REVENUE AND FINANCE
  4. Title 5 — BUSINESS LICENSES AND REGULATIONS
  5. Title 6 — ANIMALS
  6. Title 8 — HEALTH AND SAFETY
  7. Title 9 — PUBLIC PEACE, MORALS AND WELFARE
  8. Title 10 — VEHICLES AND TRAFFIC
  9. Title 12 — STREETS, SIDEWALKS AND PUBLIC PLACES
  10. Title 13 — PUBLIC SERVICES
  11. ▸Title 15 — BUILDINGS AND CONSTRUCTION
    Overview
    1. Chapter 15.04 — GENERAL PROVISIONS
    2. Chapter 15.08 — BUILDING CODE
    3. Chapter 15.09 — CALIFORNIA RESIDENTIAL CODE
    4. Chapter 15.10 — CALIFORNIA GREEN BUILDING STANDARDS CODE
    5. Chapter 15.11 — EXISTING BUILDING CODE
    6. Chapter 15.12 — ELECTRICAL CODE
    7. Chapter 15.16 — PLUMBING CODE
    8. Chapter 15.20 — MECHANICAL CODE
    9. Chapter 15.21 — ENERGY CODE
    10. Chapter 15.24 — UNIFORM HOUSING CODE
    11. Chapter 15.28 — HOUSE MOVING
    12. Chapter 15.32 — BUILDING PERMIT CONDITIONS
    13. Article 2 — Building Permit Conditions
    14. Article 3 — Administration
    15. Article 4 — Permits, Drainage and Streets—County Provisions
    16. Chapter 15.36 — GRADING
    17. Chapter 15.40 — SWIMMING POOLS
    18. Chapter 15.44 — WIND ENERGY COVERSION SYSTEMS
    19. Chapter 15.48 — RESIDENTIAL DWELLING WEATHERIZATION DISCLOSURE
    20. Chapter 15.56 — GAS SHUT-OFF DEVICES
    21. Chapter 15.58 — RESTRICTIONS ON THE INSTALLATION OF WOOD BURNI…
    22. Article 1 — General
    23. Article 2 — Restrictions on the Installation of Wood Burning A…
    24. Chapter 15.60 — SOLAR ENERGY SYSTEMS
  12. Title 16 — SUBDIVISIONS
  13. Title 17 — ZONING
  14. Title 18 — CLEAN WATER, DRAINAGE AND RELATED RIPARIAN HABITAT …
  15. Title 19 — CODE COMPLIANCE

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