Vic and Ug,
Me thinks you're exhibiting one fatal flaw. You're trying to sort him out.
Sell up, or rent it out. Give him written notice. There's no incentive to go get a job and provide for one's self, like the parental life-line being cut, particularly given that from your opening description, he's not been retrenched, nor does he seem too concerned about the basics of Maslow's Pyramid of Human Needs because you two are meeting them.