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How to Inspect Fire Extinguishers Across a Commercial Building

On August 26, 2026

How to Inspect Fire Extinguishers Across a Commercial Building

How to inspect a fire extinguisher safely and properly

Checking one extinguisher takes a minute. Checking forty across three floors, a parkade and a mechanical room is another story. In a commercial building, that’s where a building-wide fire extinguisher inspection usually slips: units get skipped, logs go blank, and nobody notices until an insurer or inspector asks for the records.

Here’s how to inspect every extinguisher in the building as one routine you can hand to anyone: an inventory, a fixed route, a named owner, one log and a plan for the yearly service. For the unit-by-unit checks, use our monthly fire extinguisher inspection checklist.

Start With a Building Inventory

Walk the whole building once and write down every extinguisher you find. Then number them. Put the number on the bracket or cabinet as well as the unit, because extinguishers leave for service all the time, and a number on the wall shows you instantly when a spot is empty.

For each unit, record:

  • Unit number and exact location (floor, room, nearest door)

  • Type and size

  • Serial number

  • Date of the last annual service

  • Anything unusual, such as a unit that’s hard to reach

Plan a Fixed Inspection Route

Pick a route and stick to it. Ground floor to top floor, then the parkade, then the mechanical and electrical rooms, works in most buildings. The same order every month means nothing gets skipped, and a backup can take over without a long handover.

Budget a minute or two per unit. A 30-unit building usually takes under an hour, plus extra time if some rooms are locked.

Name One Person as the Owner

Pick a person, not a department. They do the monthly walk or hand it to a trained backup, sign the log and call the service company when something fails. Without a named owner, tenants, caretakers and managers each assume somebody else handled it.

In a multi-tenant building, agree in writing who covers the common areas and who covers the tenant spaces. Five minutes of paperwork saves a lot of finger-pointing later.

Who Does What at a Glance

Not sure who handles what? Use this as a starting point and adjust it to your building.

Task

Who does it

How often

Walk the route and check every unit

Named owner or trained backup

Every month

Replace any failed unit and call the service company

Named owner

The same day

Full service and new tag

Certified technician

Once a year

Re-walk the inventory and update the sheet

Named owner

After any change, and once a year

Keep One Log for the Whole Building

A tag on the extinguisher isn’t a log. It only tells you about that one unit. A building-wide log shows what happened across the whole property, month after month. Keep it in a binder at the building office or in a shared spreadsheet, and record:

  • Unit number and location

  • Date checked and who checked it

  • Result: pass or deficiency

  • What the problem was

  • Date it was fixed and who fixed it

Insurers and fire inspectors often ask for this paper trail. A log that shows the problem, the fix date and the person behind it settles the question in seconds.

Fix Problems the Same Day

When a unit fails, take it out of service, tag it so nobody grabs it and put a replacement in its spot. Then log both steps. A spare or two of your most common type means a bracket never sits empty while the original is away for recharge. No spares? Ask your service company whether they provide a replacement unit.

Any extinguisher that’s been discharged, even briefly, goes for service before it returns to the wall.

Get Ready for the Annual Technician Visit

The yearly service goes more smoothly when you’ve done your homework. Send your inventory ahead of time, unlock mechanical rooms and cabinets, and tell the technician about any unit that’s been moved, used or damaged since the last visit. Afterwards, file the technician’s report next to your log and update each unit’s service date.

To see what the visit covers and who’s qualified to do it, read our guide to certified inspection requirements in Vancouver.

Check the Spots Most Buildings Miss

Even a careful routine has blind spots:

  • Parkades and loading bays: moisture, corrosion and the occasional bump from a vehicle

  • Kitchens: grease building up on nozzles, hoses and cabinets

  • Locked utility and electrical rooms: nobody has the key on inspection day

  • Stairwells: boxes and equipment stored in front of the unit

  • Tenant suites: units that quietly disappear at move-out

Give these spots a closer look during the monthly walk.

Update the Inventory When the Building Changes

Renovations, new tenants and a change in how a space is used all shift where extinguishers belong and which type you need. Re-walk the inventory after any of them, and review it in full once a year even if nothing seems to have changed.

Train the People Doing the Checks

Whoever does the monthly walk should recognize a failed unit and know the PASS method: pull the pin, aim at the base of the fire, squeeze the handle and sweep side to side. Our fire extinguisher training can cover both for your team.

One rule applies to everyone, trained or not. Never fight a fire that’s spreading fast, filling the room with smoke or blocking your exit. Get out and call 911.

Frequently Asked Questions

How long does a building-wide inspection take?

Roughly one to two minutes per unit for the monthly walk. A 30-unit building usually takes under an hour, plus extra time for locked rooms and paperwork.

Should every extinguisher have its own number?

Yes. A number on both the unit and its bracket lets your log match each extinguisher to its spot, and it shows right away when a unit has been swapped or removed.

Where should I keep the inspection log?

Keep one copy where the person covering the walk can reach it, such as a binder in the building office or a shared spreadsheet. Don’t leave it only on one person’s computer.

What if an extinguisher is missing during the walk?

Replace it right away and log the gap. Then find out why it’s gone: a swap for service, a tenant move-out or something else. Don’t just fill the spot and move on.

How often should I update the inventory?

After any renovation, tenant change or change in use, and once a year in full.

Conclusion

A building-wide inspection only works as a routine. Numbered units, a fixed route, a named owner and a log that tells the whole story are what keep the monthly walk quick and the yearly service painless.

If you manage a building in Surrey, Vancouver or anywhere in the Lower Mainland, Contact Otis Fire Protection to book your annual inspection. We’ve worked in fire protection across the region for 12+ years, completing 350+ projects every year, and every inspection comes with records you can hand to your insurer or fire inspector.