Section 8(1)(e) in The West Bengal Premises Tenancy Act, 1956.
(e)where the provisions of clause (a) or clause (b) or clause (c) or clause (d) do not apply, such rent as would be reasonable having regard to the situation, locality and condition of the premises and the amenities provided therein and where there are similar or nearly similar premises in the locality, having regard also to the rent payable in respect of such premises: