I have a brother who has a dock with three places to tie up a boat. I have seen many yachts that I can get for free. Some are restored and they are giving them away. So no house could beat that. No taxes, no grass cutting, and I don't think they are giving away houses. So if you get a cheap boat that is what would determine the savings. Buying a million dollar yacht not so much. I have seen a 57' Chris craft for free. If you just live on this yacht I wouldn't really need motors. There is a ramp right next to the docks. I don't think you could beat this.