PART 10 — CHANGE OF USEUpdated for the 2024 Ontario Building Code

10.1.1.2.Change in Major Occupancy

(1) The following changes of use are also deemed to be a change in major occupancy for the purposes of this Part: (a) a suite of a Group C major occupancy is converted into more than one suite of a Group C major occupancy, (b) a suite or part of a suite of a Group A, Division 2 or Group A, Division 4 major occupancy is converted to a gaming premises, (c) a farm building or part of a farm building is changed to another major occupancy other than a Group G major occupancy, (d) a building or part of a building is changed to a post-disaster building, (e) a building or part of a building is changed to a retirement home, (f) 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, or (g) a farm building or part of a farm building is changed to a Group G, Division 1 major occupancy.

Understand this provision in seconds

BUILDAiD Assist explains any article of the building code in plain English — with exact citations, exceptions and related requirements.

Try BUILDAiD Beta

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.