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

9.35.3.2.Protection from Damage Due to Soil Movement

(1) In clay-type soils subject to significant movement with a change in soil moisture content, the foundation depth of carports or garages connected to a dwelling unit directly or by a breezeway shall be approximately the same depth as the foundation of the main building. (2) Where slab-on-ground construction is used, a construction joint shall be provided between the main building slab and a slab serving an attached garage, breezeway or carport. (3) Except as provided in Section 9.12., foundations for attached unheated garages or carports shall be below frost level.
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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.