... but I've often had dreams about the "old house" I lived in when I was growing up in another country. All I can say is that there's some kind of nostalgia involved when you dream about your old home.
Speaking of which, I had a dream about my old house again. Every once in a while, I dream about my family's house in the old country and the pig pen we had in the back. I grew up in a rural, mostly agricultural area, and most people had their own vegetable gardens as well as livestock back then. When I dream about the "pigs" living in the cage, I often feel sympathetic to them. I look at how dingy their living space is and how they haven't been fed lately. Well, guess what? Last night I dreamt that one of the pigs (or the only pig in there) was dead.

It would appear that he died of starvation, not having been fed in a long time.
Now personally, I don't know what the old house or the pigs represent in my dreams, but perhaps what they're trying to tell me is that there's something I need to nourish, take care of, and look after in my life. Could it possibly be my health? My friendships or family relationships? My finances? It's a very interesting concept.