Do not depend on the tenant for notification. Six weeks before the end of the lease send a certified letter notifying the tenant that the lease is expiring. If you are not willing to renew, you can send a notice of termination with it. If you want to renew, send a new lease by certified mail providing a deadline for its signing and return by certified mail. If the lease is not returned, you may send out your notice of termination. If you receive a notice the tenant will be leaving you can use it to evict if they do not move out.