Variations on Common Theme

I haven't had this dream in quite awhile, but I have it, or variations of it, often. 
I dream I am living in or moving back into a house that we lived in 6 years ago.  It was a small house, but was quaint, and was well-built, an older house.  My dream consists of finding other rooms, floors, or wings that I didn't know existed.  Suddenly the house becomes larger in square footage, due to the discovery.  I am elated, because now my whole family can fit comfortably into the house that was so near and dear.  The extra wings, floors, rooms, etc. in my dreams have been elaborate in nature, sometimes equating to the level of an 1800s mansion.  One dream had renovations of the original structure, to make it more modern and functional.