I bought three Plasticville houses recently in N Gauge. The Cape Cod Houses (two to a pack), Police Station, and a residential house. The residential house seemed to be way too small to me. It has two floors and a garage but seems scaled small. Figures would touch the ceiling is you put an actual second floor in it.
The Cape Cod houses are nice. But they are more like one room fishing shacks. The Police Station is a good size for a small town sheriff's office. One floor and enough room inside to add a few things.
Hope that is a little helpful at least.