Fire watch requirements explained

A fire watch is a dedicated, documented watch for fire, smoke and related hazards when a building’s normal protections are reduced, not yet in service, or required as a condition of occupancy or work. It is not a casual extra hour on a gate post, and it is not a substitute for a fire-safety plan. The people who authorise it — typically the authority having jurisdiction, a fire-safety plan, an insurer’s condition, or a construction or impairment procedure — expect a trained person, a defined route, a way to raise the alarm, and a log that can be read after the shift.

This guide explains what a professional fire watch usually includes, when it is commonly required, and how to brief it so the watch is real. Requirements vary by city, province, state and site. Confirm them with the authority having jurisdiction and with your own fire-safety plan. Nothing here is a legal determination. For operational support see our fire watch service, and for related construction practice see the construction site security checklist.

When a watch is typically required

A watch is commonly called when fire-detection or suppression is impaired, isolated or not yet commissioned; when hot work is underway or has just finished in a vulnerable area; when a building is in a phase of construction or renovation that leaves exits, alarms or compartments incomplete; or when an authority or a fire-safety plan requires a watch as a condition of continued work or occupancy. The trigger is a reduced safety margin, not a desire for general security presence.

If you only need access control or after-hours deterrence, use a security post or a patrol. If you need someone whose primary job is to look for fire and raise the alarm, you need a fire watch. Combining the two on one officer is only defensible when the watch route, the interval and the log still hold if a visitor appears at the gate. If the gate wins every time, you no longer have a watch.

What the watch must actually do

A professional watch is built around a route, an interval, observation and communication. The officer walks a defined path that covers the impaired area, adjacent compartments, plant rooms and exit paths as the brief requires. The interval is short enough that a fire can be discovered and reported while it is still small. The officer knows how to raise the alarm, how to call the fire department or the operations desk, and how to direct responding crews to the right entrance.

The log is part of the work. Each round should record time, areas checked, exceptions (odours, hot spots, blocked exits, isolated devices, unattended hot work) and any action taken. A book that only says “all quiet” at the end of a shift will not help you if you are asked what was inspected at a given hour. Supervisors and the NSOC should know that a missed round is an incident, not a paperwork nicety.

Training, tools and relief

The person on the watch must understand the site’s fire alarm method, evacuation routes, assembly points, and any impairments that change those routes. They need a way to communicate that still works if the floor is noisy or the device is isolated. They need a torch, access to the areas on the route, and the authority to stop unsafe work if the brief gives it to them. A watch officer who cannot enter the impaired zone is not watching it.

Relief matters. A watch with no break plan becomes an exhausted officer sitting down, which is how rounds slip. Post orders should name the relief method, the overlap, and who takes the log. If the watch runs overnight, the night supervisor and the NSOC must be able to see that rounds are still occurring.

How a security company should brief it

Ask for a written watch order: the reason for the watch, the area, the interval, the route, the alarm method, the call tree, the log, and the end condition (when the system is restored, when hot work is signed off, or when the authority stands the watch down). Ask who is licensed and trained to do the work, and how the company will fill a no-show. Our published licences are listed on the licences and compliance page; your due diligence should still include a check with the regulator where that is appropriate.

Xtreme staffs fire watch from the same organisation that runs posts and patrols: 4,500+ full-time staff, a 17,000+ officer network, 40+ offices, 270+ patrol units where a mobile check is part of a wider programme, a 24/7 NSOC, and $10 million in liability coverage. We work across Canada, the United States and Australia. A watch in Surrey, Vancouver or another published city should still be briefed to that site’s fire-safety plan, not to a generic paragraph.

Standing the watch down

The watch ends when the condition that required it has ended and the person who required it is satisfied — the system is restored, the permit is closed, the authority has agreed, or the fire-safety plan no longer calls for it. Until then, do not quietly convert the watch into a receptionist post. Record the stand-down time, the reason, and who authorised it. Keep the logs with the project or building file.

If you are unsure whether you need a watch or a security post, describe the impairment and the occupancy to us and we will help you separate the two. Call 1-800-730-3712 (Press 1 Canada, 2 USA, 3 Australia), use WhatsApp, or request a quote. For contractor due diligence more generally, see how to choose a security company in Canada.

Impairments, hot work and neighbouring occupancy

Write the reason for the watch in the first line of the order. “Detection isolated on level three,” “suppression drained for a renovation,” or “hot work on the roof with occupancy below” each produce a different route. If people remain in the building, the watch must also know how those people will be told to leave and which exits still work. If the site is a construction envelope beside an occupied tower, the brief must say how the officer reaches the neighbour’s duty manager, not only the superintendent.

Hot work deserves a hard start and a hard finish. A watch that begins after the last spark and ends after the agreed cool-down is a watch. A watch that is asked to “keep an eye on it” while also signing in concrete trucks is a gate post with an extra hope attached. If both duties are required, staff both, or accept in writing that the interval of the watch will slip every time the gate is busy — and then do not call it a watch.

Keep impairments visible. A board or a pass-down that lists isolated devices, drained valves or covered detectors helps the oncoming officer and the fire crew that may attend. When the system is restored, record that restoration in the same log and stand the watch down only with the authority that required it. For a wider site plan, return to the construction site security checklist or fire watch service page.

If two or more impairments overlap — for example hot work in a zone whose detection is already isolated — rewrite the route rather than stacking informal instructions on the same officer. The log should still be readable by someone who was not at the hand-over.