I'm pretty new to all of this and I'm looking to purchase my first home in March. I've read a few different articles on the new rules for using secondary suites as income towards a mortage. My situation is this; the home I'm looking at purchasing has a two bedroom legal basement suite that rents for $1800. However the home is slightly out of what I can be approved for. Can I use this income against the mortage containing the basement suite? or does it only work when you already own the home with the basement suite and you're looking for a second mortage? Any help clearing this up will be greatly appreciated.