A foreign friend wants to buy a house in our local area, but he is a foreign hukou and can't buy it here. He wants to leave his account at my house.

Because the real estate license is still your name, he can't get your house, but it is risky. If you want to sell your house in the future, although you have the right to sell your own house, you can't sell your house if the people in the household registration book refuse to move out. Pay attention to yourself. In order to put an end to this kind of trouble, if a friend doesn't help, you can set up a written evidence with him in black and white to ensure that this will not happen, and don't trust verbal promises.