Placer County, CA Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Governing section
- Placer County Code § 9.42.080(I)
- Alarm placement
- Outside each bedroom, every level, near fuel-burning appliances
- Applies to
- Permitted short-term rentals in unincorporated Placer County
- Inspection cycle
- Fire district life-safety inspection before permit, every 3 years
- First penalty
- $1,500 citation after 30-day cure period
- Standard referenced
- California Building Code alarm installation requirements
Summary
Every short-term rental in unincorporated Placer County must have working carbon monoxide alarms installed per California Building Code standards: outside each bedroom, on every level including basements and habitable attics, and in bedrooms or attached bathrooms with a fuel-burning appliance. Fire district inspectors verify alarms during mandatory life-safety inspections under Code § 9.42.080.
I. Carbon Monoxide Alarms. Carbon monoxide alarms, in good working order, shall be installed in accordance with the California Building Code and at a minimum shall be installed outside each bedroom, on every level of the rental unit, including basements and habitable attics, and bedrooms or attached bathrooms with a fuel-burning appliance, and shall be installed in accordance with the manufacturer's installation instructions.
Full Breakdown
080(I) requires that carbon monoxide alarms be installed "in accordance with the California Building Code and at a minimum shall be installed outside each bedroom, on every level of the rental unit, including basements and habitable attics, and bedrooms or attached bathrooms with a fuel-burning appliance," and per the manufacturer's installation instructions. 42, the county's short-term rental ordinance, alongside a parallel smoke-alarm mandate in subsection (H) covering every bedroom and every level of the unit. Compliance is not just paperwork. 080(L) makes carbon monoxide alarms one of the items a fire district inspector checks during the mandatory life-safety inspection every STR must pass before its permit is issued and again once every three years, alongside smoke alarms, fire extinguishers, visible addressing, emergency communications, and outdoor grill/fireplace placement.
100(D). Inspection costs, including any re-inspection after noncompliance, are billed at the applicable fire district's fee schedule. 100(D)(1): the county notifies the owner and local contact person and gives 30 days to fix it.
Violations & Fines
Missing or malfunctioning carbon monoxide alarms are cited as an operational-standards violation under § 9.42.100(D)(1). The county gives the owner and local contact 30 days to cure after notice; a first missed deadline brings a $1,500 administrative penalty, a second $3,000, and a third $5,000, with penalties cumulative. Continued noncompliance after the third penalty can trigger nuisance abatement or judicial action, and repeated citations count toward permit revocation under § 9.42.100(F).
Frequently Asked Questions
Do all Placer County short-term rentals need carbon monoxide alarms?
Who checks that the alarms are actually installed?
What happens if an inspector finds a missing carbon monoxide alarm?
Sources & Official References
Other rules in Placer County
California rules heatmap·Compare Placer County to another location·View the California building safety overview
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