Depending on the type of tenancy you fall under, your tenancy is subject to specific laws regarding termination. If your tenancy is an 'estate for years' arrangement, then your lease has a specific date on which it runs out and no notice is required. Likewise, 'tenancy at will' agreements have no requirement for termination. Under this agreement either party may terminate. The most common form of termination falls under a 'periodic tenancy' agreement. Periodic tenancy is what people commonly think of as month-to-month or year-to-year leases. Every state has laws which establish how much notice must be given by either party in a 'periodic tenancy' agreement. Thirty days is a standard which many states have set. Either party usually has the right to do this without cause as long as the proper notification requirements are met. For more information about the termination of a tenancy, contact a real estate lawyer in your area.