Ontario Building Code

[Levis]

The only thing that doesn't apply to us Canadians is the IRC checklist that Chief has, which I don't know how many experienced users actually use anyway, even in the US. Other than that, you can draw pretty much any kind of house. It's more up to you to know your local building codes. Chief doesn't allow or disallow drawing things a certain way based on Codes (e.g.: if your stairs don't meet code or your ceiling is too low, there's no pop up warning you of that).

If you are not familiar with the Codes, I would recommend buying the appropriate Code. You can get it online at http://www.nationalcodes.nrc.gc.ca/eng/nbc/. You can get it for only 10 days for fairly cheap if you plan on using it only once. There are also requirements outside of the Code that could apply, such as local bylaws, permit requirements, and architectural guidelines. If you're not comfortable with all that, I would recommend consulting a qualified architect or architectural draftsperson to help you design your plan.