Service tax residential property

Dear Sir, I have purchase flat in Baroda. It is under construction property and Builder give me possession during December-2016. I have made payments to Builder as per Agreement which are as under; 01. Rs. 100000.00 Dated 05.10.2015 (Booking Amount) 02. 402500 DTD 01.03.2015 (As per agreement for 30%) 03. Rs. 500000.00 DTD 20.05.2015 04. Rs. 235000.00 DTD 19.06.2015 05. Rs. 350000.00 DTD 04.12.2015 05. Rs. 87000.00 will pay soon within one month. Now the Builder asking me to pay Rs. 62000.00 as service tax and Flat cost is Rs. 1675000.00 Kindly inform my service tax liability as service tax is different during the 2015 & 2016. Can I need to pay Swach Bharat & Krishikalyan cess for the amount paid during the 2015 as there is no such provisions under the Act. Secondly, Builder asking me to pay in cash and not cheque. He is also not ready to issue receipt for the service tax. Even he do not mention service tax registration no on the receipt which he issued me for my previous payments. Kindly reply at the earliest and do the needful. Thanks & Regards, Ritesh Dave