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Content on this site is based on the Ontario Building Code, Ontario Regulation 5/25, as published on e-Laws and last updated January 16, 2025. This site includes excerpts from Division B — Parts 1, 3–12 only. Division A, Division C, and the Appendices are not included.

Disclaimer. This site provides general access to Ontario Building Code information for reference only. It is not an official source and may omit or summarize content. Always verify requirements with the current OBC and your Authority Having Jurisdiction (AHJ). The Ontario Building Code is Crown copyright © King’s Printer for Ontario. Terms of Use.