How about Dwelling UnitsWouldn't this simply be a two family house? I'm assuming upper one is not indepently supported on its own foundation.
Well it was still raining houses.Oz? As in the land Dorothy and Toto go to meet the Wizard of Oz? Of course that was a house above a witch, not another house.
The use of the term "only" would suggest that the house is not permitted to be located to the side.A friend of mine asked this very interesting question:
In Ontario building code, inn what condition which a house is only permitted on top of a house? Row town houses?