NJ, don't know about where you live, but here in Truro and environs there's loads of properties in the centre of towns that could be converted, utilised and used to regenerate townships, assuming a younger population take-up. Manchester and Liverpool have two of the best programmes for this form of regeneration and it should be more actively encouraged, rather than eating up land with new-builds.
Some of the build is totally speculative....here in Truro, we have some 1500 new homes going up around the city on a population of 26,000.....(8000 homes). Could someone tell me where are all the new jobs involved to support this?