The Government of Ontario will provide a free digital [PDF format] copy of the Ontario Building Code Compendium for non-commercial use. Follow the instructions at Request a digital copy of the 2012 Building Code Compendium to request a copy.
Note: Came into effect January 2014. Most of Ontario's revised Building Code takes effect Jan. 1, 2014. For more detail on the transition period, see section "Section 4.1. Transition Rule" at the end of the Code.
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Ontario Building Code 2012 - Compendium