Some members of the cafe might be interested in Weds and Thurs episodes
of You and Yours (you can listen again online at www.bbc.co.uk/radio4,
with the relevent pieces starting about 25-30mins into the programme).
They were discussing the problems with bringing derelict/unused homes
back into use - there was a strong sense of frustration as to how to
persuade landlords to do something useful with empty homes, but no real
solutions such as land tax were discussed.
All the best,