yea on this one game ive played called puzzle pirates its like that... you bought a house and its just one place, but every one had a different place on the inside where only you or invited ppl could see your houses interior. so maybe it would be like a house in a "fortress"...you goto the front gate to get in, but inside its unbuilt, then you have to build the house yourself, so that carpentry isnt a wasted thing.