housing crisis in UK ?what crisis

There's always a crisis of not enough houses being built, or the 'wrong' sort or whatever.
To a simple soul such as myself, it seems it should be relatively simple to sort.
A) if needed , force local government to allot building spaces or whatever the correct phrase is, and allow said authority to rake of some of the windfall profit from that land as a tax.
b) allow the building companies to make money from building ! If this means that the 'social housing' bit of the law needs changing , then so be it........
Problem sorted QED :)