Code Library › Volume 1 › Section 9.10 — Fire Protection
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.10.9.13.Separation of Residential Occupancies

(1) Except as provided in Sentences (2) and (4), residential occupancies shall be separated from all other major occupancies by a fire separation having a fire-resistance rating of not less than 1 h. (2) Except as provided in Sentence (3), a major occupancy classified as a residential occupancy, including live/work units, shall be separated from other major occupancies classified as mercantile or medium hazard industrial occupancies by a fire separation having a fire-resistance rating of not less than 2 h. (3) Where not more than two dwelling units or live/work units are located in a building containing a mercantile occupancy, such mercantile occupancy shall be separated from the dwelling units or live/work units by a fire separation having not less than 1 h fire-resistance rating. (4) The requirement for fire separations between major occupancies in Sentence (1) is waived for the occupancies allowed within live/work units.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.