The Ontario Building Code | Building in Flood Plains
9.1.1.8. building in Flood Plains
(1) Buildings constructed on flood plains shall,
(a) be designed and constructed in accordance with good engineering practice to withstand anticipated vertical and horizontal hydrostatic pressures acting on the structure, and
(b) incorporate floodproofing measures that will preserve the integrity of exits and means of egress during times of flooding.
In Plain Language
Buildings constructed in flood plains must meet the supplementary requirements referenced in this article addressing flood risk to the structure and its occupants.
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.