The Ontario Building Code | Areas of Combination Bedrooms
9.5.7.3. Areas of Combination Bedrooms
(1) Bedroom spaces in combination with other spaces in dwelling units shall have an area not less than 4.2 m².
In Plain Language
Combination bedrooms, rooms serving as a bedroom along with another function, have area requirements set out in this article reflecting their dual 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.