Vlad, I’d do everything David said AND I would really try in advance to confirm (through references, public records, and my intuition) the JV partner’s reputation. I’d also try to find someone with something to lose if their reputation were to take a hit or (like in my case, as a licensed broker) who has to answer to a real estate board or other disciplinary body regarding ethics complaints, etc., since someone can file a complaint against a real estate licensee without the expense of hiring an attorney. Hopefully you just find someone who is trustworthy, because a slime ball is just going to find ways to circumvent your agreement or make it too financially onerous for you to litigate and come out net positive even if you prevail (esp. if your JV agreement or statute doesn’t provide for the ability to recover attorney fees). That said, I guess if you confirm someone is doing consistent deals, as David recommends, it’s less likely they’ll have any real incentive to breach your JV agreement – it would be too short-sighted (in theory).