OBC DIVISION B · PART 10 — CHANGE OF USEUpdated for the 2024 Ontario Building Code
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Section 10.2 — Classification of Existing Buildings
Full text of Section 10.2 (Classification of Existing Buildings) — Division B, Part 10 (Change of Use) of the 2024 Ontario Building Code, with every article reproduced below.
10.2.1.Classification
10.2.1.1.Classification of Major Occupancy permalink →
(1) Every existing building or part of it shall be classified according to its major occupancy in accordance with the
requirements of Part 2 or Subsection 3.1.2.
10.2.1.2.Classification According to Construction and Occupancy permalink →
(1) Except as provided in Sentence (2), for the purposes of this Part, existing buildings shall be classified as to their
construction and occupancy as provided for in Sentence 11.2.1.1.(1).
(2) For the purpose of Parts 10 and 11, the calculation of the construction index and hazard index for Group G major
occupancy is permitted to be based on Group F, Division 2 major occupancy.
10.2.1.3.Building Size and Construction permalink →
r1 (1) The requirements of Articles 2.2.2.3. to 2.2.2.8. and 3.2.2.20. to 3.2.2.93. do not apply to this Part.
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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.