I vote for sending Mithalwen over to stage a house-saving demo
The one at Northmoor Road surprised me when I was there last year - it sold for a BIG amount (it would, in North Oxford) but the owner was just an ordinary pensioner, pottering around in the garage with his second hand VW car. The trellis around the top of the garden fence is shabby looking, but that is in fact the original trellis put up by Tolkien himself!