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Placer County, CA Fire Regulations: Smoke Detectors (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Minimum coverage: One smoke alarm per bedroom + per level
Standard: Installed per California Building Code
Inspection cycle: Fire-life safety inspection every 3 years
Two failed inspections: STR application denied, § 9.42.050(B)(10)
Also required: CO alarms, fire extinguisher, § 9.42.080(I)-(J)
Scope: STR units in Eastern Placer County STR Area

Summary

Every short-term rental permitted in eastern Placer County must have working smoke alarms installed per the California Building Code, at minimum one in each bedroom and at least one on every level, including basements and habitable attics; compliance is checked at a life-safety fire inspection required every three years.

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

H. Smoke Alarms. Smoke alarms, in good working order, shall be installed in accordance with the California Building Code and at a minimum shall be installed in each bedroom, and at least one alarm on every level of the short-term rental, including basements and habitable attics.

View official code

Full Breakdown

080(H) sets the smoke alarm standard for permitted short-term rentals: alarms in good working order, installed in accordance with the California Building Code, with a minimum of one in each bedroom and at least one on every level of the unit, including basements and habitable attics. 080(J). 080(L) requires fire district staff to re-inspect for smoke alarm compliance, among other items, once every three years or on request. 050(B)(10). 330, but this file does not print a standalone county amendment to the Residential Code's own smoke alarm chapter for owner-occupied homes outside the STR program.

Violations & Fines

An STR that fails its required smoke alarm inspection, or omits smoke alarm information from its permit application, can have that application or renewal denied under Section 9.42.050(C)(1)(g) for a failed or refused fire inspection. Two failed fire-life safety inspections within a 12-month period results in outright denial under Section 9.42.050(B)(10), and an owner who refuses to allow the required inspection risks permit revocation under Section 9.42.100(D).

Frequently Asked Questions

How many smoke alarms does a Placer County vacation rental need?

At least one in every bedroom and at least one on every level of the unit, including basements and habitable attics, installed per the California Building Code, under Section 9.42.080(H). The property must list the exact number and location of alarms on its STR permit application.

Do smoke alarms get inspected in Placer County short-term rentals?

Yes. Section 9.42.080(L) requires a fire district life-safety inspection that checks smoke alarm compliance, among other items, once every three years, and again on request. Two failed fire-life safety inspections within 12 months results in denial of the STR permit application.

Does this smoke alarm rule apply to any home in Placer County, or just rentals?

As written in Section 9.42.080(H), it specifically governs permitted short-term rental units in the Eastern Placer County STR Area. Owner-occupied homes outside the STR program are covered by the county's separately adopted California Residential Code construction standards, not this STR-specific provision.

Sources & Official References

[1]Placer County Code § 9.42.080 (qcode.us)

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