A Colorado roommate agreement is used by roommates to form a binding arrangement that determines the rules and responsibilities that all parties must follow. In addition to addressing the division of rent, the agreement will usually dictate how cleaning responsibilities will be managed between the roommates. Other common provisions include hours during which noise is acceptable, where smoking is prohibited, designated common areas, and permissions regarding overnight guests. Creating an agreement helps to ensure that the roommates will avoid and quickly resolve disputes while respecting the lease and property.