If only economists ruled the world
I think we should have totally open borders, no planning laws, people on housing benefit being able to live at taxpayers' expense wherever they want with their landlords to be able to charge whatever they want; improve the help to buy scheme so that buyers only have to pay back loans if they really, really wish to i.e. operating a bit like student loans.
Furthermore, all houses for sale should be advertised in every country in the world with an absolute ban on British people being allowed to purchase a new built property since allowing people to live in properties which could more usefully be purchased for investment purposes by foreigners would be a clear market distortion.
All this will work because the government has a bottomless pit of money from which to draw and we have an endless supply of land; let's face it, what are farmers for if we can import all the food we need? Come on, get out those concrete mixers, you know it makes (economic) sense; we could become more wealthy and successful even than Ireland before their housing based economy crashed.