If you answered yes to all of these then you are eligible to use Part 11 of the OBC.
#STAIRS ONTARIO BUILDING CODE PROFESSIONAL#
You, or your contractor, may not even need a construction professional to sign off on the design. The great thing about OBC Part 11 is that, if your building or renovation qualifies, you can build under less stringent requirements than if you were doing new construction.
#STAIRS ONTARIO BUILDING CODE CODE#
The current revision of the OBC is 2012, and the code this article is based off of. There is no Part 11 for renovations in the NBC and it is unique to Ontario. It is based off of the National Building Code of Canada 2010 (NBC), the current latest revision of the NBC is 2015 (Ontario has not adopted it yet). The OBC is available online, it is updated about every 4 years and is the governing document for building construction in Ontario. These clauses are tucked way in the back of the OBC under Part 11: Renovations. If you are renovating your home or business there are some clauses in the Ontario Building Code(OBC) that you should know.