The Ontario Building Code | Sanitary Facilities
3.10.2.7. sanitary Facilities
(1) Except as provided in Sentence (2), the requirements in Subsection 3.7.4. shall apply.
(2) Except as permitted in Sentences 3.7.4.1.(2) and (3), two washrooms, each containing a water closet and a lavatory, shall be provided within one of the buildings on the property.
3.10.3. Additional Requirements for Buildings Containing more than 1 Storey
In Plain Language
Subsection 3.7.4's plumbing fixture requirements generally apply, except two washrooms (each with a water closet and lavatory) must be provided somewhere on the property under specific exception conditions.
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.