Hahaha, I don't think you can call it free because the house you were given belongs to someone else. The only way out of here is to stay away from home to avoid conflict because you know it belongs to someone else.
I wonder how the house that is given to the person for free actually belong to another person but if it is possible to actually know the real owner of the house and know how it is been transferred, it is going to help to know who is actually entitled to the house.