The greatest value of writing a Roommate Agreement is that it forces you and your roommates to take your co-tenancy responsibilities seriously. The more you can anticipate potential problems, the better prepared you'll be to handle disputes that arise. Moreover, the lease agreement does not decide the behavior of the roommates towards each other. Since the behavior of the tenants does not violate the law, roommates are free to do anything. In addition to that, it is likely that your roommate can leave the apartment and never return, leaving you to pay the rent. Different aspects of the rental agreement should be discussed, including how the monthly rent will be split and paid between the roommates. The contract should also outline who is responsible for various expenses such as utilities, maintenance, and upkeep. The landlord must be informed of any roommate change and the departing roommate will be responsible for their portion of rent through the end of the rental period unless other arrangements are made with the other roommates and landlord, in writing. A rental lease agreement is usually made between a landlord and the tenant. By virtue of the agreement, the tenant receives the permission to use the property and assets (optional) of the landlord for a specified period of time.