Every Canadian Fire Alarm Code and Standard — And Where to Get Each One Free

Last updated: August 2026

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Quick answer

• The Ontario Fire Code is free and complete. Full text on e-Laws. No login, no fee.
• The Ontario Building Code is free but is no longer published in full. The regulation is now one page long. It adopts the National Building Code of Canada 2020 by reference.
• The Ontario Amendment Document is not published online. You email for it.
• The free consolidated substitute is the 2024 Building Code Compendium — $0.00 from Publications Ontario, but four amendment-document versions behind.
• The National Building Code of Canada 2020 is free from the NRC Publications Archive. No registration.
• The CAN/ULC standards are paid. There is no legitimate free copy of S524, S537, S536 or S1001.
• The Ontario Electrical Safety Code is paid too — it is a CSA publication. ESA's bulletins are free; the code itself is not.
• The version matters more than the document. The newest published edition is almost never the one that applies.

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The master table

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Ontario Fire Code — free, complete, current

O. Reg. 213/07. The whole thing is on e-Laws at no cost: ontario.ca/laws/regulation/070213. The header reads "Consolidation period: January 1, 2026 - e-Laws currency date (August 12, 2026)", and the last amendment is O. Reg. 303/25.

Three places to know:

Note the section title. It is not called "Fire Alarm Systems" — searching for that phrase is why people conclude the Fire Code has no fire alarm section.

One practical warning: e-Laws pages are JavaScript-rendered. They can come back blank in some readers, PDF converters and scrapers. Open them in a normal browser.

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Ontario Building Code — free, but no longer published in full

This is the part that catches people out.

O. Reg. 163/24 is on e-Laws, free, at ontario.ca/laws/regulation/240163 — consolidation period 22 July 2026 to the e-Laws currency date of 12 August 2026, last amendment O. Reg. 242/26. It is one page long. It adopts the "National Building Code of Canada 2020 (First Printing), as amended by the document entitled 'Ontario Amendments to the National Building Code of Canada 2020', dated July 17, 2026."

That is the entire regulation. From ontario.ca, verbatim:

The structure of the Ontario Building Code regulation has changed. The new Building Code regulation is one page long and adopts the National Building Code of Canada 2020, except where it is amended by the Ontario Amendment Document... The full-length version of the Building Code will no longer be available on E-laws. Email us to request a copy of the Ontario Amendment Document.

The request address is Ontario.Amendment.Document@ontario.ca.

So the current Ontario Building Code is three documents you have to assemble yourself:

1. O. Reg. 163/24 — the one-page adopting regulation (free, e-Laws)
2. NBC 2020, First Printing — the body of the code (free, NRC)
3. The Ontario Amendment Document, 17 July 2026 — Ontario's changes (free, but only by email)

Note that the ontario.ca page carrying that explanation now displays a banner saying it is no longer up to date. Treat the structural explanation as good and the version numbers on it as suspect.

For how far Ontario's fire alarm provisions diverge from the national model, see where Ontario's fire alarm rules differ from the National Building Code.

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The 2024 Building Code Compendium — free, consolidated, and behind

If you want one document with the Ontario Building Code text already merged, that is the 2024 Building Code Compendium, and it costs $0.00 from Publications Ontario:

• Volume 1 — the Code text
• Volume 2 — Appendix A explanatory notes
• Building code and guides catalogue

The title page reads "2024 Building Code Compendium / Volume 1 / January 16, 2025 Update / (Containing O. Reg. 5/25)."

Read that date carefully. The Compendium is four amendment-document versions behind. O. Reg. 247/25, 110/26, 119/26 and 242/26 have all been adopted since that update. There is no free consolidated text reflecting the amendment document dated 17 July 2026 that is now in force.

How to work with it. Download it, use it for structure and for provisions that have not moved, and email once for the Ontario Amendment Document so you can check anything you are about to rely on. Do not quote a Compendium clause in a compliance document without confirming it against the amendment document.

The revoked one

O. Reg. 332/12 — the previous full-length Building Code — was revoked effective 1 January 2025. It is still readable on e-Laws at ontario.ca/laws/regulation/120332, which matters for grandfathered projects. It is not the current code, and a great deal of Canadian fire alarm content online still quotes it as if it were.

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National Building Code of Canada 2020 — free, national

This is a national model code, not a provincial law. It has no force in Ontario except through O. Reg. 163/24 adopting it.

It is free in electronic format from the NRC Publications Archive, with no registration: nrc-publications.canada.ca.

The Codes Canada landing page states that codes are "available directly through the NRC Publications Archive in free electronic format", alongside paid print: Binder $100.00 CAD, Soft cover $80.00 CAD.

Which download to take. The archive offers a First printing, a Second printing (which includes revisions and errata released 31 March 2025), and a separate Errata package (31 March 2025).

Take the First Printing. That is the printing O. Reg. 163/24 adopts. The Second Printing is the newer document and it is the wrong one for an Ontario compliance question.

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The CAN/ULC standards — paid, and there is no free copy

The fire alarm standards are published by ULSE Inc. and sold through the catalogue at shopulstandards.com. None of them are free. There is no government mirror, no NRC archive copy, no open-access edition.

The designation convention is genuinely inconsistent right now — 524, 536 and 1001 have lost the "S", S537 has kept it. Both forms refer to the same families of documents. For what each one actually covers, see CAN/ULC-S524, S537, S536 and S1001.

What you can read before buying. The catalogue exposes scope text for 524 and 536, so you can at least confirm you are buying the right document. The S537 scope is not public — the catalogue's abstract resource for it returns a file-not-found. There is no free way to preview what is in the verification standard.

On PDFs found elsewhere

Do not use a copy of a CAN/ULC standard from a document-sharing site, and do not link one. Unauthorized copies circulate widely. They are copyrighted, and — the practical problem — they are usually several editions stale. A free PDF of "S524" found on a file-sharing site is far more likely to be the 2014 edition than anything currently designated. Working from it will put you at odds with an inspector holding the real thing.

If you need the standard, buy the standard.

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Which editions the codes actually adopt

This is the part people get wrong, and it is the reason the master table has a "version in force" column at all.

Ontario Building Code, Division B Table 1.3.1.2 and Ontario Fire Code, Division B Table 1.2.1.A each pin a specific edition. They do not agree with each other, and neither agrees with what is currently for sale.

S536 is a Fire Code instrument only. It does not appear anywhere in either Compendium volume. Neither do S527, S528, S529, S530, S552, S559 or S573 — those are referenced one level down, by S524 and S537 themselves, rather than by the Building Code directly.

The three rules that decide it

From the Ontario Fire Code, Division B — note these are the referenced-documents rules, not the Division C qualification articles that share the same numbers:

1.2.1.1.(1) A reference in this Code to a document set out in Table 1.2.1.A. is to the edition designated in the table.

1.2.1.2 Unless otherwise specified in this Code, the documents referenced in this Code shall include all amendments, revisions and supplements effective to January 1, 2026.

1.2.1.3 Despite Articles 1.2.1.1. and 1.2.1.2., the Chief Fire Official may permit compliance with an edition of a document previous to that referred to in this Code if the Chief Fire Official is satisfied that compliance with the edition referred to in this Code is impractical.

So: the table decides, amendments run to 1 January 2026, and the Chief Fire Official can allow an older edition where the designated one is impractical.

The headline

The newest published edition is almost never the one that applies. Ontario is on the 2019 editions of S524 and S537 in both codes, and on S1001-11 — a fifteen-year gap to the published 2nd edition.

Buying CAN/ULC-524-2024 does not make you compliant with a code that designates S524:2019. Longer treatment: which edition of the standard actually applies to your job.

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Standards Council of Canada — free, and worth understanding

SCC's registers are free and they answer a question that comes up constantly: who is actually accredited to do what.

There are two separate accreditation programs, and they are routinely confused.

Effective 1 April 2025, ULC Standards transferred its accreditation activities to UL Standards & Engagement, and SCC merged the two SDO accreditation files. The accredited standards developer is now ULSE Inc. Writing the standards and certifying the equipment are two different accreditations held under two different files — see ULC vs UL: what actually counts in Canada.

Where "CAN" comes from

The "CAN" prefix is an SCC-mandated descriptor marking National Standard of Canada status. SCC's Requirements & Guidance for SDOs, clause 7.4: "The SDO shall use the 'CAN' descriptor preceding the standard designation."

So "CAN/ULC-S537" reads as: National Standard of Canada, developed by the ULC standards organization, designation S537. The prefix is not decoration.

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Electrical Safety Authority — free bulletins, paid code

Free. ESA's recognized certification marks page tells you which marks are accepted in Ontario. ESA: "Before an electrical product or piece of electrical equipment is used, sold, displayed or advertised for sale in Ontario, it must be approved by an accredited certification or evaluation agency."

Also free. Bulletin 2-7-38, covering Rules 2-022 and 2-024: "To meet the requirements of the OESC (Rules 2-022 and 2-024), equipment shall be approved to a recognized Canadian standard."

Not free. The Ontario Electrical Safety Code itself is a paid CSA publication. Nobody publishes it for nothing, and any site claiming to offer it free is not offering the real current document. Budget for it.

For the fire alarm circuit provisions, see powering a fire alarm system: what CEC Section 32 requires.

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How to check that what you found is current

Two lines on any e-Laws page tell you everything, and almost nobody reads them.

Check both lines before relying on anything you find. This single habit catches the most common error in Canadian fire alarm content online — quoting O. Reg. 332/12 as current law when it was revoked on 1 January 2025.

And for anything printed rather than hosted — the Compendium, a saved PDF — check the update date on the title page against the last amendment number on e-Laws. If they do not line up, the printed one is behind.

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Last updated

Last updated: August 2026.

The two dates this page turns on:

• 2024 Building Code Compendium — consolidated to the 16 January 2025 Update (containing O. Reg. 5/25). Four amendment-document versions behind as of this writing.
• Ontario e-Laws currency date — 12 August 2026, for both O. Reg. 213/07 (Fire Code, consolidation period from 1 January 2026) and O. Reg. 163/24 (Building Code, consolidation period from 22 July 2026).

Verify both before citing anything here in a compliance document.