Section 14(2) in The West Bengal Non-Agricultural Tenancy Act, 1949
(2)When the rent of a tenant has been enhanced by the Court or in pursuance of the conditions of a contract, it shall not be further enhanced during the fifteen years next following the date on which it has been last so enhanced and for the purposes of this section if an order of gradual enhancement of such rent has been made by a Court in accordance with the provisions of section 13, the full rent fixed by such order shall be deemed to have come into effect from the date of such order :Provided that the landlord of such tenant may institute a suit for the enhancement of the rent of such tenancy during the said period of fifteen years on the ground of any improvement effected to the non-agricultural land comprised in such tenancy by, or wholly or partly at the expense of, such landlord during such period.
