Landautomate

What smoke and carbon monoxide detector duties does a California landlord have?

Verify smoke alarms and CO detectors are working. California law requires smoke alarms in each bedroom, outside each sleeping area, and on every level, plus carbon monoxide alarms outside each sleeping area and on every level of any unit with a gas, oil, or other fossil fuel heater or appliance, a fireplace, or an attached garage, all working when each new tenant moves in, so testing them at every turnover and once a year keeps the unit compliant and catches a failed alarm before an emergency.

The California rule

Each rule shows its schedule, its primary sources, and the date it was last verified.

Verify smoke alarms and CO detectors are working

On a recurring schedule · Last verified September 2026 · source 1 · source 2 · source 3

Related rules in California

The California guide lists every compliance obligation, the seasonal maintenance calendar, and baseline upkeep.

Open the California landlord guide · Smoke and carbon monoxide detector duties in every state

What Landautomate does with this page

This guide is the reading version of the Landautomate California rule base. In the app, the same rules become dated tasks on each California property, timed to its purchase date, lease dates, age, and climate, with an email before each one is due. The free preview shows a sample of that schedule for California in under a minute, no account needed.

Preview the California schedule

See this calendar built for your own property

The free preview takes a state and a few property facts and shows the schedule Landautomate would run, no account needed. Every new account starts with a 30-day free Pro trial, no card required.

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