Isn't this just a duplex or triplex? They're fairly common around here. Don't they have those in BC?
I think BC_Cheque is talking about the idea of high-rise towers that contain condos that have space comparable to a detached house. Perhaps three or four bedrooms... enough that a couple with the typical 2.3 kids wouldn't have to look for someplace with "more room" as their family grows. It sounds like a good idea. People do tend to think of a house with a yard when they picture a place to raise a family, but in some places that's becoming unviable.
-k