Code Library › Volume 1 › Section 9.35 — Garages and Carports
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.35.3.3.Drainage

(1) Detached garages of less than 55 m² floor area and not more than 1 storey in height that are not of masonry or masonry veneer construction need not conform with the foundation drainage requirements stated in Section 9.14. where the finished ground level is at or near the elevation of the garage’s floor and where the ground slopes away from the building.
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What are the foundation and floor slab requirements for garages in Ontario?What gas-proofing is required between an attached garage and the house in Ontario?What is the difference between a carport and a garage under the Ontario Building Code?

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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.