Aggregation of consideration for immovable property transfers requires combining payments by multiple transferors or transferees for TDS threshold. The amendment provides that where there is more than one transferor or transferee in respect of any immovable property, the consideration for determining the exemption in sub section (2) shall be the aggregate of the amounts paid or payable by all the transferees to the transferor or by all the transferors to the transferee, thereby ensuring combined valuation for the TDS obligation under section 194-IA.