The Ontario Building Code | Separation of Suites
9.10.9.13. Separation of Suites
(1) Except as required in Article 9.10.9.14. and as permitted by Sentence (2), each suite in other than business and personal services occupancies shall be separated from adjoining suites by a fire separationhaving a fire-resistance rating of not less than 45 min.
(2) Insprinklered buildings, suitesof business and personal services occupancy and mercantile occupancythat are served by public corridors conforming with Sentence 3.3.1.4.(4) are not required to be separated from each other by fire separations.
In Plain Language
Suites in general must be separated from one another and from other spaces as set out in this article, limiting how fire in one suite could spread to a neighbouring one.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.