I really wonder if we aren't finally coming to the end of the house as an investment kind of thinking. What's really needed is stackable movable residences that when you want to move a crane comes and picks up your house and it goes down the road maybe fold it up and it's placed where you want to live the next time.
But in order for that to happen so many things would have to change including the basis for lots of local government taxation which is founded on inflated values of homes and property in that particular jurisdiction. The idea of residency tied to a particular address and a lot more.
There doesn't seem to be anything here yet