Appendix A — GUIDELINES FOR THE SEISMIC RETROFIT OF EXISTING BUILDINGS
A407 Quality Control — 2025 California Existing Building Code
California Existing Building Code (Title 24, Part 10) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Existing Building Code (Title 24, Part 10) § A407 · Effective January 1, 2026 · Official source: Building Standards Commission
A407.1 Structural observation.¶
[BS] A407.1 Structural observation. Structural observation, in accordance with Section 1704.6 of the California Building Code is required, regardless of seismic design category, height or other conditions. Structural observation shall include visual observation of work for conformance to the approved construction documents and confirmation of existing conditions assumed during design.
A407.2 Contractor responsibility.¶
Contractor responsibility shall be in accordance with Section 1704.4 of the California Building Code .
A407.3 Testing and inspection.¶
Structural testing and inspection for new construction materials, submittals, reports and certificates of compliance shall be in accordance with Sections 1704 and 1705 of the California Building Code . Work done to comply with this chapter shall not be eligible for Exceptions 1, 2, or 3 of Section 1704.2 of the California Building Code or for the exception to Section 1705.13.2 of the California Building Code .
APPENDIX A
CHAPTER A5 – REFERENCED STANDARDS
(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
| Adopting Agency | BSC | BSC-CG | SFM | HCD 1 | HCD 2 | HCD 1/AC | DSA AC | DSA SS | DSA SS/CC | OSHPD 1 | OSHPD 1R | OSHPD 2 | OSHPD 3 | OSHPD 4 | OSHPD 5 | OSHPD 6 | BSCC | DPH | AGR | DWR | CEC | CA | SL | SLC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adopt Entire Chapter | X | X | X | |||||||||||||||||||||
| Adopt Entire Chapter as amended (amended sections listed below) | ||||||||||||||||||||||||
| Adopt only those sections that are listed below | ||||||||||||||||||||||||
| Chapter / Section |
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
CHAPTER A5
REFERENCED STANDARDS
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