PART 11 — RENOVATIONUpdated for the 2024 Ontario Building Code
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11.3.4.1.Extension, Material Alteration or Repair
(1) Despite Subsections 11.3.1. to 11.3.3., when an existing building is extended or subject to material alteration or
repair, Part 7 applies,
(a) to the design and construction of plumbing in the extensions and those parts of the building subject to material
alteration and repair, and
(b) to plumbing which is adversely affected by the extension, alteration or repair.
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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.