Ningo, I've added more pix to give you a better idea what what it looks like inside. I've taken some liberties with the lower level and made one of the bedrooms into a family room.
It is a single-family home with what's known in this area as a downstairs "in-law" suite. I was the "inlaw".

I am almost out of building lots in RV. I have a handful of 30x40, a couple of 60x60 and 3 or 4 smaller lots. then I'm out of space in RV.