Answer:
Estate from period to period
Explanation:
When the tenant continues to pays the monthly rents even after the expiry of the one year contract lease on a house, the leasehold estates exists is called as the Estate from period to period. The 'Estate from period to period' is a type of agreement between the owner and the tenant where the starting period of the tenancy and the length of duration of the tenancy is mentioned but the agreement does not end after the specific duration and continues. Such agreement of estate is called Estate from period to period.
Thus the answer is Estate from period to period.