Does that mean it excludes most of the results from "Floor to ceiling libraries without a ladder"?
You know, if I'm buying a house, I think I can supply my own ladder separately...
Less pedantically, what I'm trying to say is: are you really sure these are the kinds of searches that home buyers are really looking for? "Home in london, under £1m, with big beautiful windows" - I suspect that most London buyers are going to care an awful lot about where in London the house is, a city-wide search isn't going to be useful to most. Maybe your functionality (as presented) won't inspire actual buyers.
Speaking of which, that might be a way to improve it - combine with location & mapping data to figure out nearby transport, services, schools, etc...