That’s one of my favorite Grand Designs episodes. They end up having to build a little ferry system to get the construction equipment over the water (which ulti

That’s one of my favorite Grand Designs episodes. They end up having to build a little ferry system to get the construction equipment over the water (which ultimately fails and dumps its cargo into the Thames, necessitating a whole recovery effort). It’s a different flotation technique though (“boat in a hole”), and much more expensive. I think the breakthrough here is the relatively cheap approach of slapping styro to the bottom of the house and letting it ride. I assume if you were trying to lift a bigger/taller house, you may need to start digging down to find room for all the foam, which starts blowing up the price tag.