yes, the buyer needs to obtain tax deduction account number, deduct 30.9% of the sale consideration and pay it ot the government within 7th of the next month. quarterly TDS return also should be filed.
If the immovable property is purchased from a Non-Resident Indian (NRI) then TDS has to be done U/s 195 (TDS Rate is at 20%+Education Cess) and not under section 194IA.