This where will the money come from lark. Surely a government that can borrow money at a record low rate, create jobs through constructing housing stock that will in turn generate income and become an assert improve health, criminal justice cots, related improvements in getting people back to or keeping them in work, save countless millions on b and b s, housing benefit rip offs. The wider benefits to society of well housed people. You could ask what will the cost be of not doing it.