San Jose, CA Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Adopted code
- 2025 California Residential Code
- Local section
- SJMC § 24.09.100
- R315 exclusion
- Not excluded by § 24.09.110
- Enforcement
- San José Building Division
- Violation basis
- SJMC § 24.01.130
Summary
San José adopts the 2025 California Residential Code in full under its own building code, and the local exclusion list leaves CRC Section R315 intact, so the state's carbon monoxide alarm mandate is enforced citywide through the City's own Municipal Code.
Except as otherwise provided for in this chapter, the California Residential Code, 2025 edition together with those omissions, amendments, exceptions and additions thereto as amended in Title 24 of the California Code of Regulations are approved and adopted, and are hereby incorporated in this chapter by reference and made a part hereof the same as if fully set forth herein.B.One copy of the CRC has been filed for use and examination of the public in the office of the city clerk of the City of San José. (Ords. 28838, 29334, 29806, 30326, 30837, 31256.)
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 5 Update 3).
Full Breakdown
San José Municipal Code § 24.09.100 approves and adopts the California Residential Code, 2025 edition, 'the same as if fully set forth' in the local building code, with one copy on file with the city clerk. Section 24.09.110 lists every CRC part San José declines to adopt, mostly administrative provisions in Chapter 1, and carbon monoxide alarm requirements are not on that list. As a result, CRC Section R315's carbon monoxide alarm mandate for dwellings applies inside city limits as San José's own building code, enforced by the San José Building Division through the same Title 24 permit and inspection process used for the rest of the residential code.
Violations & Fines
Occupying a dwelling without a required CO alarm violates SJMC § 24.01.130's ban on maintaining any structure in violation of an adopted code; the Building Division can red-tag noncompliant units and require correction before occupancy.
Frequently Asked Questions
Does San José have its own carbon monoxide alarm ordinance?
Which buildings does the rule apply to?
Sources & Official References
Other rules in San Jose
California rules heatmap·Compare San Jose to another location·View the California building safety overview
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Carbon Monoxide Detectors in Nearby Cities
How other cities in Santa Clara County handle carbon monoxide detectors.