I don't have the comics at hand, but I'm pretty sure that I've seen external shots of Scrooge's house in Barks's work. Wasn't there one in the back-up story, recently referred to, where he converted all his money into $1,000,000 bills and put them in a 30-foot ball? As I remember it, it was a very ordinary-looking house, quite similar to Donald's. JMB