Dimension of plot

Ask the seller to provide you with the plans of the plot duly approved by the revenue officer showing the boundary and area details. If he does not provide you can yourself apply to the concerned revenue department under RTI. This will take time. In meanwhile you can take services of an approved goverment empanelled architect for measuring the subject plot and ask for a report. This report you can show to the seller and tell him about the discrepancy between actual area and area as informed to you by him. If he gives you a reasonable answer justifying the discrepancy then good. If not you may terminate the agreement and seek refund. Alternatively if area is less than informed then you can claim a proportionate reduction in consideration value payable to seller.