Tds on property sold by nri

A NRI was allotted a flat by Omex faridabad in 2005. Though as per Buyer's agreement the possession was to be given in 3 years, offer for temporary possession for getting furnishing was offered in June 2014; the actual possession has been given now in 2016. Total cost of the flat was rs 32 lakh, which is being sold in Rs 48 Lakh. Pl advise the rate and amount on which TDS will be deducted i.e it will be on RS 16 Lakh or Rs 48 Lakh.Pl advise relevant section of IT Act