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Five Fire Alarm Code Questions Every Building Owner Should Be Able to Answer

May 26, 2026

Most building owners in Ontario inherit a fire alarm system the day they take possession — and almost nobody hands them a manual. The codes that govern that system are split across several documents, and knowing which one applies to which question is half the battle. Here are five questions every owner or property manager should be able to answer, and where the answers actually live.

1. When was the system last inspected — and by whom?

The Ontario Fire Code requires fire alarm systems in most buildings to be inspected and tested on a recurring schedule. The detailed procedures come from CAN/ULC-S536, the standard for inspection and testing of fire alarm systems. The work is typically performed by a qualified fire protection contractor, and the records belong to you, the owner — not the contractor.

If you can't put your hands on the most recent annual inspection report, that's the first thing to fix. Fire department inspectors ask for these records, and missing documentation is one of the most common violations found during routine inspections.

2. Do you have a fire safety plan, and is it current?

Buildings with fire alarm systems generally require an approved fire safety plan under the Ontario Fire Code. The plan covers emergency procedures, the responsibilities of supervisory staff, fire drill schedules, and the maintenance obligations for your fire protection equipment.

A fire safety plan isn't a one-time document. It needs to reflect the building as it actually operates today — current staff, current tenant mix, current equipment. If your building changed use, changed management, or was renovated since the plan was approved, it likely needs an update.

3. What happens when the system goes into trouble?

Every fire alarm panel distinguishes between alarm, supervisory, and trouble conditions. A trouble signal means something in the system isn't working as designed — a wiring fault, a failed device, a battery issue. Owners should know who receives those signals and what the response procedure is.

If your system is monitored, confirm the monitoring agreement is active and the contact list is current. If it isn't monitored, someone on-site needs to know what a trouble condition looks like and who to call. A panel that has been sitting in trouble for weeks is a system that may not work when it matters.

4. Who is allowed to silence or reset the panel?

It's a simple question with real consequences. Silencing an alarm without investigating it, or resetting a panel without understanding why it activated, can mask a real problem — and in some cases it violates the building's fire safety plan. Supervisory staff named in the plan should be trained on the panel's basic operation, and everyone else should know that the panel is not theirs to touch.

5. When the building changes, does the system have to change too?

This is the question owners miss most often. Renovations, changes of use, and even some tenant fit-outs can trigger requirements for the fire alarm system under the Ontario Building Code. New partition walls can leave detectors in the wrong place. A change from office to residential occupancy changes the rules entirely. Modifications to the system itself generally require verification under CAN/ULC-S537 before the modified portions go back into service.

The safe habit: before any renovation, ask whether the fire alarm system is affected — and get the answer in writing from someone qualified to give it.

Where the answers come from

None of this replaces advice from a qualified professional or your local fire department — but an owner who can answer these five questions is in far better shape than most.