Landlords only have the right to reasonable access to the leased premises. If the landlord enters your rental unit for no reason or disturbs you at night, he or she may be breaching the lease. The landlord does have the right to enter rental premises occasionally for reasonable purpose including inspection and maintenance, repairs, or to show the property to potential buyers or renters. Reasonable also means that the landlord should come at a reasonable time, give you advance notice first, and should knock first—unless there is an emergency. If there is an emergency such as broken water pipes or smoke detectors activated, then the landlord has the right to enter immediately without prior notice.