Code & Standards Guides
Plain-language explainers on the Canadian codes and standards that govern fire alarm systems and buildings — what each document covers, who uses it, and how they fit together.
How the Codes & Standards Fit Together
Start here. The full lifecycle of a fire alarm system — from the building code that requires it to the standards that govern its installation, verification, and testing — and who is responsible at every stage.
Building & Fire Codes
The Ontario Building Code (OBC 2024)
Ontario's construction regulation: how it's structured, when it applies, occupancy classifications, and the fire protection requirements that matter to fire alarm work.
The National Building Code of Canada (NBC 2025)
Canada's model building code: how provinces adopt and adapt it, its objective-based structure, and when to consult it alongside your provincial code.
The Ontario Fire Code (OFC)
The regulation that governs existing buildings: fire safety plans, maintenance and testing obligations, retrofit requirements, and what owners are responsible for.
ULC Fire Alarm Standards
CAN/ULC-S524 — Installation of Fire Alarm Systems
The installation standard: device placement and spacing, wiring methods, notification appliances, supervisory devices, and how it connects to the building codes.
CAN/ULC-S537 — Verification of Fire Alarm Systems
Acceptance testing after installation or modification: what gets verified, who performs it, and what the verification report covers.
CAN/ULC-S536 — Inspection and Testing of Fire Alarm Systems
The recurring inspection standard: testing frequencies, what gets checked at each interval, documentation, and the Ontario Fire Code connection.
CAN/ULC-S527 — Control Units for Fire Alarm Systems
The product standard for fire alarm panels: what the control unit itself must do, and how it differs from the installation rules in S524.