The US has lots of available land but not in areas people want to live. Of course the want to live part is usually linked in some way to job availability but obviously lots of other factors like family, climate, etc. It would be interesting to see what would happen with UBI. Would people spread out more than they do today or would everyone stay in the cities and suburbs they are in today and just pay more for their housing. What I will say is UBI will certainly be great for the housing market in most locations. (Detroit not so much).