Code Library › Volume 1 › Section 9.18 — Crawl Spaces
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.18.5.1.Drainage

(1) Except where it can be shown to be unnecessary, the ingress of water into a crawl space shall be controlled by grading or drainage. (2) Drainage of foundation walls shall conform to Article 9.14.2.1. (3) Drainage of the ground cover or floor-on-ground in the crawl space shall conform to Subsection 9.16.3. (4) Drains shall conform to Section 9.14.
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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.