It is catch 22. On the one hand I am against any proposal that incentivises making housing smaller and smaller, and cramming more and more houses on a plot. It's not even a good model for housing chickens, let alone humans. On the other hand, taking more green belt land for housing reduces the area of countryside, which I believe is vital for everyone's quality of life. The best way is to reduce the population, and therefore demand for houses. Good luck with that one!