My Dad has been renting a house for 3 years. 2 years ago he added a roommate to the lease which expired on Jan. 31, 2008. He has been having problems getting the roommate to pay rent on time and has decided to move. He found a new place through the comapany he is already renting through. He gave notice on his current house, put a deposit on the new place and gave notice (30days) to the roommate 2 days ago. Yesterday the rental company called him to say that he and the roommate have to give notice at the same time and are both responsible for rent until the roommate also signs off on the rental agreement. The roommate wants to stay until Jan. 31, 2010 which will cause my Dad to pay rent on 2 places at once. If the lease is up and they are on a month-to-month can my Dad just give 30 day notice to both rental co. and roommate and be on his way or is he bound to the roommate until he decides to sign off?