******* Legal Advice Needed ASAP ********
So what exactly happened with his part of the verbal agreement (working on your house)? Did he back out of that or do you simply not trust him now? If it's the latter, be careful...if you're trying to make him accountable to a verbal agreement, he can do the same, and say that you've changed the terms of the original agreement. That's just my no-legal-knowledge opinion...:D