Certificate of Verification
A certificate of verification is the document issued on completion of a CAN/ULC-S537 verification, attesting that a new or altered fire alarm system was installed in conformance with its design and with CAN/ULC-S524 and performs all of its intended functions. It is the output of the standard rather than a document either Ontario code names, but the Ontario Fire Code gives it the longest retention period in the regulation: Article 1.1.2.2.(2) requires initial verification reports for systems installed after 21 November 2007 to be kept for the life of the system, regardless of which code the system was installed under. It is issued once per installation or qualifying alteration and is never renewed on a schedule.
What the document actually is
Two things, usually stapled together. A short certificate or letter of confirmation carrying the building identification, the system description, the date, the standard and edition verified against, and a signature. Behind it, the full S537 report: the device-by-device record that supports the claim on the front page. A certificate with no report behind it is not much use to the next person who opens the binder.
Since the 2019 editions the report form sits in the body of CAN/ULC-S537 rather than an appendix, which makes its structure mandatory rather than a suggested template.
Which standard and which code provision
The certificate comes from S537. The duty to verify comes from Ontario Building Code Article 3.2.4.5.(2), with Division B Table 1.3.1.2 fixing S537:2019. Neither Ontario code specifies what the certificate must look like or what it must say, because that sits inside the standard.
The Fire Code does one thing with it, and it is the thing worth remembering. Article 1.1.2.2.(2) requires initial verification and test reports for fire protection systems installed after 21 November 2007 to be retained throughout the life of the systems, whether the system was installed under the Fire Code or the Building Code. So the Fire Code reaches out and imposes a permanent retention duty on a document produced under the Building Code. Compare the annual inspection record, which only has to survive two years under Article 1.1.2.2.(1). Full comparison in verification vs annual inspection.
Who signs it
Ontario names no qualification for performing a verification or for signing the certificate. Fire Code Division C, Article 1.2.1.1 lists annual tests and inspections, interconnection testing, and repairs, replacements and alterations. Verification is not on that list, and we have not been able to find any Ontario provision that fills the gap. Who your AHJ will accept is a project question, and it is frequently settled by the specification and the insurer instead.
Alberta is different in a specific way. Under NBC(AE) 2023 Division C, Article 2.4.1.4.(1)(c), for a building not exempted by Article 2.4.1.1, a registered professional must design the system, carry out field reviews and witness the verification. Witnessing is not performing. Edmonton publishes a Fire Alarm Verification Letter of Confirmation form built around that requirement.
What it contains
Certi-Fire, a Canadian trade source rather than the standard itself, describes the S537 report as covering system information, control units and transponders, field devices, power supplies, circuit fault tolerance, ancillary devices, interconnections to fire signal receiving centres, deficiencies and recommendations, with device-level records tied to address and zone and battery results including capacity calculations. Treat that as indicative of shape, not definitive.
What goes wrong
The certificate is missing. On any building constructed after November 2007 the original is supposed to still be there. It very often is not, and reconstructing one means re-verifying, which means the cost of proving a twenty-year-old system lands on the current owner.
The certificate is stale. Alberta's form carries a notation that subsequent modifications invalidate it. Even where no such notation exists, a certificate describes the system as it was on one day. On an unfamiliar building, what has changed since is the better question.
The certificate is partial. Calgary Fire Marshal Bulletin 2025-001 requires all sections of S537 and S536 to be completed, rejects partial reports outright, requires inapplicable sections to be marked N/A rather than deleted, and states that tests or inspections may not be reworded or revised in order or format.
The certificate is treated as an annual. It is not, and a current annual does not substitute for a missing one. See what an S537 verification involves.
Fire Alarm Academy provides educational content only. It does not confer any certification, licence or credential, and it is not affiliated with, endorsed by, or accredited by the Canadian Fire Alarm Association, the Electrical Contractors Association of Ontario, ULC Standards, UL Standards and Engagement, CSA Group, the Electrical Safety Authority, any authority having jurisdiction, or any manufacturer. Always work from the edition of any standard adopted by your authority having jurisdiction.