I am wondering what the benefit of putting in a granny flat behind an existing residence would be when you can put a unit or house. I guess a granny flat doesn't need to have the land subdivided and a unit or house would?
I am not in favour of building new g/flats unless they are already in situ, because they will set you back $100K, hard to access the equity and you can not sell it off. Not to mention unless you have the right set up, separate meters, separate entries, you may end up with tenant issues.