Where a restricted contract is referred to the appropriate tribunal under this Part, or Part VII, of this Act and—
the contract relates to a dwelling consisting of or comprising part only of a hereditament, and
no apportionment of the rateable value of the hereditament has been made under section 25 of this Act,
then, unless the lessor in the course of the proceedings requires that such an apportionment shall be made and, within 2 weeks of making the requirement, brings proceedings in the county court for the making of the apportionment, the tribunal shall have jurisdiction to deal with the reference if it appears to them that, had the apportionment been made, they would have had jurisdiction.