Room mate night mare

[Julian Buick]

I have a friend that has a roommate. At first she got along great with him, in fact maybe got along too well. As you can imagine things have not worked out well and she would like to get rid of him. He has stopped paying rent and refuses to leave. What recourse does she have? I’m assuming there was never a lease agreement or anything like that. Since it’s her house and there is no contract can she just throw him out or does he have some kind of squatters rights or something? This is in Savannah, Georgia. Thanks in advance for any advice.