(Dons evil thinking cap) I was considering starting a service to truck homeless people to a neighborhood where you want to buy property. It would be called Goober (rhymes with Uber)...
Things are getting so ridiculous and government shows absolutely no interest in doing anything about it, if I won the lottery I'd actually consider doing things like this just to be a massive societal troll.
You may have to lobby local councils to make that legal first. In Westminster (a borough in central London), it's illegal to sleep on the street and illegal to "give people free food" on the street.