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Solano County, CA Building Safety: Carbon Monoxide Detectors (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Alarm coverage
Dwelling and every bedroom
Alarm types required
Smoke and carbon monoxide
Fire extinguisher
At least one, functional and marked
Verified at
Five-year permit renewal
First violation penalty
$1,500 under Sec. 10-24(b)(3)

Summary

Every Solano County vacation house rental must equip the dwelling and each individual bedroom with functional smoke and carbon monoxide alarms, and keep at least one working, clearly marked fire extinguisher on site, under Section 28.75.30(A)(7)(e) of the county code, part of the fire-safety conditions of the short-term rental permit.

These county ordinances apply to unincorporated areas of Solano County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

e. The dwelling and each bedroom shall be equipped with functional smoke and carbon monoxide alarms. At least one functional fire extinguisher shall be available and readily marked.

View official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 1868, passed April 9, 2026).

Full Breakdown

30(A)(7)(e) sits inside the fire-safety subsection of Solano County's vacation house rental ordinance, immediately after the rules gating High and Very High Fire Hazard Severity Zone approvals. It applies to every permitted vacation house rental in the county, not only those in a mapped fire hazard zone: the dwelling and each bedroom must be equipped with functional smoke and carbon monoxide alarms, and at least one functional fire extinguisher must be available and readily marked. The requirement is bedroom-by-bedroom, so a rental with a guest house counted toward occupancy under subsection (A)(2) must alarm each bedroom in the guest house as well as the main dwelling, matching the per-bedroom occupancy cap in subsection (A)(3) of up to two guests per bedroom.

The fire extinguisher requirement is a minimum of one per property, but it must be functional and marked so guests can find and use it, and Resource Management can verify both the alarms and the extinguisher during the periodic permit renewal required every five years under subsection (A)(14). This alarm and extinguisher mandate operates alongside the separate fire-pit restriction in subsection (7)(d), which bars guests from using any fire pit, fireplace, or other outdoor fire feature on a vacation house rental property, and the operator's duty under subsection (7)(f) to inform guests of area fire risk and evacuation routes.

All of subsection 7 traces back to the same permit condition: an operator who fails to maintain working alarms is out of compliance with the vacation house rental land use permit itself.

Violations & Fines

A vacation house rental missing functional smoke or carbon monoxide alarms, or without a marked, working fire extinguisher, is a short-term rental ordinance violation under Solano County Code Section 28.75.30(A)(15), enforced through the penalty schedule in Section 10-24(b)(3): $1,500 for a first violation, $3,000 for a second within one year, and $5,000 for a third or later violation, alongside possible non-renewal of the five-year operating permit.

Frequently Asked Questions

Do I need a carbon monoxide alarm in every bedroom of my Solano County vacation rental?
Yes, every bedroom. Section 28.75.30(A)(7)(e) requires that the dwelling and each bedroom be equipped with functional smoke and carbon monoxide alarms, so a single alarm in a hallway or living room does not satisfy the requirement if any bedroom lacks its own working unit.
Is a fire extinguisher required at a Solano County vacation house rental?
Yes. The same subsection requires at least one functional fire extinguisher, and it must be readily marked so guests can locate it quickly. Resource Management can check this during the five-year operating permit renewal cycle required under Section 28.75.30(A)(14).
Does this alarm requirement apply only to rentals in fire hazard zones?
No. Section 28.75.30(A)(7)(e) applies to every vacation house rental permitted under the ordinance, regardless of Fire Hazard Severity Zone designation. The Very High and High zone findings in subsections (a) through (c) are separate, additional requirements layered on top for rentals in those mapped zones.

Sources & Official References

Other rules in Solano County

All Solano County rules

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