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OBC DIVISION B · PART 3 · SECTION 3.10 — SELF-SERVICE STORAGE BUILDINGS

Do self-storage buildings need sprinklers under the Ontario Building Code?

Not always. Sprinkler requirements depend on the building's area, height, construction type and classification under Section 3.10 and Subsection 3.2.2. Smaller single-storey self-storage buildings can often be unsprinklered, while larger or multi-storey facilities generally require sprinkler protection.

Code reference
Whether a self-service storage building requires an automatic sprinkler system is determined by applying the building size and construction provisions of Part 3 to the building's classification, as modified by Section 3.10. Larger buildings, additional storeys and certain construction types trigger sprinklering, while modest single-storey buildings may be permitted without it.
OBC Division B, Section 3.10 and Subsection 3.2.2

Paraphrased for clarity — open this provision in the BUILDAiD Library for the exact wording.

What this means in practice

Sprinkler decisions drive self-storage economics, so run the Subsection 3.2.2 analysis early with the Section 3.10 modifications in mind. Designers sometimes carve a large facility into multiple buildings with firewalls to stay under unsprinklered area thresholds; that works only if the firewalls genuinely meet code. Remember that sprinklering often buys back travel distance, spatial separation and construction relaxations, so a sprinklered design is not always the expensive option overall. Insurers may require sprinklers even where the OBC does not.

Plain language

Small, one-storey self-storage buildings often do not need fire sprinklers in Ontario, but bigger or taller ones usually do. The answer depends on the building's size and how it is built, so this gets decided early in design.

Related questions

What Ontario Building Code rules apply to self-service storage buildings?What fire separations are required in a self-storage building in Ontario?How many exits does a self-storage building need in Ontario, and what are the travel distance limits?

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This page is provided for general information. Building code requirements depend on your specific project, occupancy and municipality, and code editions change. Always verify requirements against the current Ontario Building Code and confirm with your local building department.