Oral notice from either party to the other is not valid. At the end of a written lease. When a tenant damages property. When a tenant violates a condition of a written lease. When a tenant is involved in criminal activity.
Some leases contain an automatic renewal clause.
These are automatically renewed unless the tenant notifies the landlord that he will move when the lease ends. Any agreement between a tenant and landlord allowing the tenant to stay after the lease ends should be in writing. Otherwise if there is a disagreement, the tenant may be charged double rent as a holdover or treated as a trespasser. If a tenant wishes to move before a lease ends, he may choose to sublease. This means leasing your lease to another person who moves in and pays rent.