The houses wouldn't be mansions as far as I know, but they would be high end and larger than the average house. I really don't have a specific size, but larger than your usual ranch style home, with higher ceilings as well.

The Makerbot Replicator 2 has a bed of 11.2" L x 6" W x 6.1" T. This seems like a great printer, and at a nice value as well so I'm considering purchasing this one, but I'm not sure if you take a larger house and scale it down to 11", if it will be large enough to get a feel for what it will look like finished. But at the same time, you want it small enough so people will keep it afterwards, and not be too large that it would be in the way.

Here's a couple of photos from the houses this contractor has built.

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