Periodic tenancy: an ongoing, continuing, repetitive estate; it continues until one party gives valid notice; date of termination is not

specified in the lease; three ways to create: express agreement, implication, or operation of law (either an oral lease violating s/f or

hold-over tenant situation); termination occurs by giving proper notice; notice required to be equal to length of period, except if period

is year then only 6 months notice is required; last day of period is effective day of termination