If I were Housing Minister (and I never will be, so this isn't relevant - it's just a fantasy), I'd go on a tour of the towns and inner cities and just look at the state of some of them. There are some towns where there are whole streets with boarded up shops and small industrial units - and I know some of them have been like that for years. I'd flatten the lot and build decent housing on it, making sure that there is planning for communal spaces and infrastructure. The problem is, of course, that they tend to be in areas of high unemployment (which is why they're derelict in the first place), so some dots need joining and employment needs to be encouraged to the areas. Whether or not any government or regional mayor has the foresight to do that, I don't know.