When Is Fire Watch Required in California? A Plain Guide for Property Managers

The common situations that trigger a fire watch in California, what a fire watch guard actually does, and how the fire watch log works.

By the APS Security team · Licensed BSIS PPO #PP0121407 · Updated 2026-11-13

What a fire watch is

A fire watch is a trained person whose only job is to walk a building or site on a set schedule, looking for fire, smoke and fire hazards, when the normal fire protection is not working or when the work going on creates extra risk. It is a stand-in for the alarm or sprinkler system, not a replacement for fixing it. The fire watch stays in place until the system is back in service or the fire department says it can end. In California, the fire code official (usually your local fire department or fire marshal) decides when a fire watch is needed and what it must look like.

Impaired sprinklers or fire alarms

The most common reason for a fire watch is a fire protection system that is out of service. That can be a sprinkler system shut down for repairs, a tenant improvement or a broken pipe, or a fire alarm panel that is in trouble, being replaced or not reporting to the monitoring company. Under the California Fire Code, when a required fire protection system is out of service, the fire department and the fire code official must be notified right away, and the official can require the building to be evacuated or an approved fire watch to be provided until the system is restored. Many owners also learn about the need for a fire watch from their alarm company, sprinkler contractor or insurance carrier. If you are told a system is impaired, call your fire department, ask what they require, and get the fire watch in place before people are left unprotected.

Hot work on job sites and in buildings

Welding, cutting, brazing, grinding and torch work can start fires that smolder for a long time after the work stops. The California Fire Code requires a fire watch during hot work and for at least 30 minutes after it ends, and the fire code official or the site's hot work program can require a longer watch. Some hot work permits, insurance carriers and national standards ask for more time, so read your permit carefully. The fire watch person should have an extinguisher ready, know how to sound the alarm, and keep watching the area, including the floors below and the other side of walls where sparks can travel.

Fire marshal orders and other situations

A fire marshal or inspector can also order a fire watch in other cases, such as a building that failed an inspection, a crowded event where exits or systems are a concern, a building under heavy renovation, or a vacant building with a history of trespassers. Sometimes the order comes with a specific round schedule, such as walking every floor at set intervals, or a log format you must use. Always follow the written order. If anything is unclear, ask the inspector before the first round, not after.

What a fire watch guard does on each round

A good fire watch guard learns the building before the first round: where the exits, stairwells, pull stations, extinguishers and the alarm panel are, and who to call. On each round, they walk every required area, look and smell for smoke or fire, check that exits and fire lanes are clear and doors are not propped or chained, and note hazards like stored trash, blocked sprinkler heads or space heaters. If they find a fire, they call 911 first, then alert the building and help people get out. They do not leave the post until relieved. APS fire watch guards check in each round with GPS and take time-stamped photos, so there is proof that every area was checked.

The fire watch log

The log is the record the fire department and your insurer will look at. It should show, at the very least, the property address, the guard's name, the date, the time each round started and ended, the areas checked, anything found and what was done about it, and any calls made. Many fire departments have their own log form; if yours does, use it. Keep the logs on file after the fire watch ends. APS provides a written fire watch log plus a Daily Activity Report after every shift with GPS check-ins and photos for each round.

Getting a fire watch started

Fire watch usually has to start fast, sometimes within hours. Have this ready when you call: the address, which system is down or what hot work is planned, what the fire department told you, and the hours or days you expect to need coverage. Cost depends on the hours, the size of the property and how many guards are needed to make every round on time, so the best step is to request a free quote. APS Security (BSIS PPO #PP0121407) provides fire watch across Los Angeles, Orange, Riverside and San Bernardino counties and can often start the same day. Call (833) 388-0071.

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