Ontario building code updated to reference revised April 21, 2026 Ontario Amendments document
BUILDING CODE — under the Building Code Act, 1992
Plain-language summary · AI-assisted · not legal advice
Ontario's building code regulation now points to a revised version of the "Ontario Amendments to the National Building Code of Canada 2020" dated April 21, 2026, replacing the previous April 1, 2026 dated document. The National Building Code of Canada 2020 (First Printing) itself remains the base code. Anyone involved in new construction or building permit applications should confirm they are referencing the April 21, 2026 version of the Ontario Amendments document rather than the earlier one. The practical effect is that the amendment document adopted as part of Ontario's building code has been updated, and compliance work should be based on the current version.
Who this affects: building permit applicants · architects and designers · general contractors and builders · building officials and inspectors · developers
Source of truth: O. Reg. 163/24 on ontario.ca · consolidated version 8 → 0
Legislative text © King's Printer for Ontario. This page is not an official version of the law and is not legal advice. Verify against the official source before acting.
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