San Bernardino, CA Building Safety: Fire Sprinkler Requirements (2026)
Key Facts
- Governing section
- SBMC § 15.04.250
- Scope
- residential additions only
- Decision basis
- water availability + hydrant flow
- Decision maker
- acting Fire Authority, case-by-case
- Chapter effective
- Ord. MC-1433, 12-21-2016
- Max penalty
- $1,000 fine / 6 months jail
Summary
San Bernardino does not impose a blanket sprinkler mandate on home additions. Under § 15.04.250, the acting Fire Authority decides case by case whether a residential addition needs automatic fire sprinklers, based on water availability and existing hydrant fire flow at the project site.
§ 15.04.250 AUTOMATIC FIRE SPRINKLER SYSTEMS - RESIDENTIAL ADDITIONS. The authority to require passive fire suppression (sprinklers) for residential additions will be determined by the acting Fire Authority based on availability of water and existing hydrants fire flow within the area of the proposed structure.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-2: Supplement contains: Local legislation current through Ord. MC-1666, passed 8-5-2026).
Full Breakdown
250, added to the Building Codes chapter by Ord. MC-1433 on December 21, 2016, gives the acting Fire Authority discretion over whether a residential addition needs an automatic fire sprinkler system, rather than fixing a set square-footage or valuation trigger. The standard the code sets is site-specific: the Fire Authority looks at 'availability of water and existing hydrants fire flow within the area of the proposed structure' before deciding. That means two otherwise identical additions in different parts of the city can get different answers depending on local water infrastructure, and an applicant will not know whether sprinklers are required until the Fire Authority reviews the specific plans and site conditions.
020(B)(8), so any sprinkler system the Fire Authority does require must be designed, installed and inspected to that adopted code's standards, administered through the Building Official's permit process. 020. Because the requirement is folded into the building permit rather than a stand-alone approval, no separate hearing or appeal process is listed in this section; the applicant deals directly with the Fire Authority during plan review. 250 was carried forward unchanged through the chapter's 2019, 2020 and 2024 amendments, most recently by Ord. MC-1643, passed October 2, 2024.
Violations & Fines
Installing an addition without the sprinkler system the Fire Authority required, or without the required permit and inspections generally, is treated as a Building Code violation under § 15.04.030 and enforced the same as any other unpermitted work. A sustained violation is a misdemeanor under § 1.12.010(A), punishable by up to $1,000 in fines, six months in county jail, or both, plus the city's investigation costs.
Frequently Asked Questions
Will I have to install fire sprinklers on my home addition in San Bernardino?
Does this rule apply to a brand-new house, not an addition?
Who decides whether my addition needs sprinklers, and can I appeal?
Sources & Official References
Other rules in San Bernardino
California rules heatmap·Compare San Bernardino to another location·View the California building safety overview
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Fire Sprinkler Requirements in Nearby Cities
How other cities in San Bernardino County handle fire sprinkler requirements.