The planning system is not fit for purpose any more. Developers buy up the sites, clear them, then sit on them for years while they wrangle with the local council about what they are allowed to build.
Once they receive planning permission they go back to the council to renegotiate so that they can reduce the social housing and affordable housing elements claiming that it's not financially viable. This might go on for ten years or even more. Meanwhile they have created an eyesore and have caused planning blight in the vicinity leading to run-down adjacent area, as nobody knows what is going to happen.
It costs the council hundreds of thousands in expensive planning appeals. In the end the council gives in. Or is forced to give in. This happens all the time round here (Gloucestershire) and everywhere else I guess.
Crazy system.
Surely there must be a better way of providing housing.