06/09/2026
Most people don’t know what a Part 3 building is.
That gap is one of the most common reasons commercial projects hit a wall at the permit stage.
Part 3 of the Ontario Building Code governs restaurants, daycares, offices, retail, and most buildings where the public gathers. The rules are more demanding — and a licensed architect is legally required.
The part that surprises most clients: a change of use triggers it even if the renovation looks minor. Same building, completely different compliance picture.
Full breakdown on the SODA blog → link in bio.
DaycareDesign NeverOrdinary SODAarchitecture