DIVISION C · PART 1 — GENERALUpdated for the 2024 Ontario Building Code

1.3.1.4.Permits Under Section 10 of the Act

(1) Except as provided in Sentence (2), the following changes in use of a building or part of a building constitute an increase in hazard for the purposes of section 10 of the Act and require a permit under section 10 of the Act: (a) a change of the major occupancy of all or part of a building that is designated with a “Y” in Table 1.3.1.4. takes place, (b) a suite of a Group C major occupancy is converted into more than one suite of Group C major occupancy, (c) a suite or part of a suite of a Group A, Division 2 or a Group A, Division 4 major occupancy is converted to a gaming premises, (d) a farm building or part of a farm building is changed to another major occupancy other than a Group G major occupancy, (e) a farm building or part of a farm building is changed to a Group G, Division 1 major occupancy. (f) a building or part of a building is changed to a post-disaster building, (g) a building or part of a building is changed to a retirement home, or (h) the use of a building or part of a building is changed and the previous major occupancy of the building or part of the building cannot be determined. (2) A person is exempt from the requirement to obtain a permit under section 10 of the Act where the change in use of the building or part of the building will result from proposed construction and a permit under section 8 of the Act has been issued in respect of such construction. (3) A person is exempt from the requirement to obtain a permit under section 10 of the Act for the change of use of a building in unorganized territory. Table 1.3.1.4. Permit Required for Change of Use Forming Part of Sentence 1.3.1.4.(1)(1) FROM(2) A-1 A-2 A-3 A-4 B-1 B-2 B-3 C D E F-1 F-2 F-3 A-1 N(5) Y Y N(5) Y Y Y Y Y Y Y Y Y A-2 Y N(5) Y N(5) Y Y Y Y Y Y Y Y Y A-3 Y Y N(5) N(5) Y Y Y Y Y Y Y Y Y A-4 Y Y Y N(5) Y Y Y Y Y Y Y Y Y B-1 Y Y Y N(5) N(5) Y Y Y Y Y Y Y Y B-2 Y Y Y N(5) Y N(5) Y Y Y Y Y Y Y TO(3) B-3 Y Y Y N(5) Y N(5) N(5) Y Y Y Y Y Y C Y Y Y N(5) Y N(5) N(5) (4) Y Y Y Y Y D N(5) N(5) Y N(5) Y N(5) N(5) Y N(5) Y Y N(5) N(5) E Y Y Y N(5) Y Y Y Y Y N(5) Y Y Y F-1 Y Y Y N(5) Y Y Y Y Y Y N(5) Y Y F-2 Y Y Y N(5) Y Y Y Y Y Y N(5) N(5) Y F-3 Y N(5) Y N(5) Y Y Y Y N(5) N(5) N(5) N(5) N(5) Notes to Table 1.3.1.4.: (1) See Clause 1.3.1.4.(1)(a), Subclause 3.18.1.1.(1)(a)(i) of Division B and Clause 9.41.1.1.(1)(a) of Division B. (2) Major occupancy of all or part of a building before change of use. (3) Major occupancy of all or part of a building after change of use. (4) See Clause 1.3.1.4.(1)(b), Subclause 3.18.1.1.(1)(a)(ii) of Division B and Clauses 9.41.1.1.(1)(b) and 11.4.2.3.(1)(b) of Division B. (5) “N” is only applicable where the major occupancy of the entire suite is changed.

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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.