There seem to be a lot of potential 'brownfield' sites around Havant ( where there's a white elephant of a large shopping mall with few of the spaces taken up ) and the land around there and Waterlooville - problem is of course, there's space to the West but the jobs are mainly to the East.
Any major housing scheme needs to address that, and generate income in Western areas which badly need it, the need becoming more dire the further West one goes, Cornwall actually being on the EEC poverty list ( or similar ) despite a lot of skilled locals.