The first one is interesting, as it shows that they have vastly extended the house to the rear. The door under the stairs led to a half-bath (toilet and sink), and that was the buildings’ end.

If you ask me how I know that: I got the original house plans from the net and plan to - one day - build a proper LEGO model of it. Not the shrunken one they offer as a set, but built to scale from those plans, with the driveway, the garage, the garden with the tree and tree house.