Your lease ends when the date on the lease says it ends.Many leases have a clause that state the lease will go on a month-to-month basis after the first twelve months. Even so, if you are not ready to move out, notify your landlord at least thirty days ahead of the end date. If the landlord wants you out on the lease end date, then you better make arrangements to be moved out. If you want to go on a new lease, then let him know as soon as possible.If you want to use the month-to-month clause that might be in the lease, chances are the landlord will raise the rent if he allows you to stay under that arrangement. If you have a Housing Choice Voucher, don't forget to notify your caseworker.