The Ontario Building Code | Application
(1) This Section applies where proposed construction,
(a) in respect of an existing building will result in any of the following changes of use of all or part of the building:
(i) a change of the major occupancy of all or part of a buildingthat is designated with a "Y" in Table 220.127.116.11. of Division C,
(ii) a suite of a Group C major occupancyis converted into more than one suite of a Group C major occupancy,
(iii) 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,
(iv) a farm building or part of a farm building is changed to a major occupancy,
(v) a building or part of a buildingis changed to a post-disaster building,
(vi) a building or part of a buildingis changed to a retirement home regulated under the Retirement Homes Act, 2010, or
Note: On July 1, 2017, Subclause 18.104.22.168.(1)(a)(vi) of Division B of the Regulation is amended by striking out "a retirement home regulated under the Retirement Homes Act, 2010" and substituting "a retirement home". (See: O. Reg. 139/17, s. 48)
(vii) the use of a building or part of a buildingis changed and the previous major occupancy of the building or part of the buildingcannot be determined, or
(b) in respect of an existing building of combustible constructionwill extend the building by adding a storey or storeys such that the extended building will be more than four storeys in building height.
(2) For the purposes of this Section and Sentences 22.214.171.124.(1) and 126.96.36.199.(4), the changes of use set out in Subclauses (1)(a)(ii) to (iv) and (vi) shall also be deemed to constitute a change in major occupancy.
(3) The requirements of this Section are in addition to the requirements of other Parts of this Division as they apply to the proposed construction.
3.17.2. Additional Construction