Peter Beaumont it is irrelevant who owns the land, if you have a legally binding lease, usafruct or superficies agreement, and you haven't broken any of the terms and conditions, you tell them to leave they are trespassing, if they refuse, contact your solicitor/lawyer, you would probably need to take it to court, and involve the head village man and the police, I can tell you one thing, I wouldn't just walk away without a fight, some Thai families, think they can just do anything they want to, even if you buy land and a house in your wife/girlfriends name, and don't have a lease, you can still take it to court, but you need to have proof, that you gave her the money to purchase it, to have any chance of recovering any of the lost money, the court can force the sale of the house and land, to recover any debt.