The Ontario Building Code | Classification of Major Occupancy
10.2.1.1. Classification of Major Occupancy
(1) Every existing building or part of it shall be classified according to its major occupancyin accordance with the requirements of Subsection 3.1.2.
In Plain Language
Major occupancy classification for an existing building being converted is determined as set out in this article, based on the new intended use.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.