process of resale of flat in ghaziabad

I want to sell my under construction flat in Ghaziabad and have already found a new buyer. I have made about 80% payment to the builder till now and have not taken any loan from any bank. Now Builder is asking me for transfer fees and following procedure of transfer in order to make the deal legal:- 1) I have to write application to builder for transfer request. 2) Transfer fees to be deposited by me to him first. 2) Builder will cancel my membership and will issue new allotment to the buyer on the old agreed amount. 3) If new buyer is to seek loan, bank will send money to the builder. 4) After receipt of money from new buyer's bank, he will refund me the amount deposited by me to him. 5) Surplus amount/Black money to be mutually settled between me and new buyer. Is it the right process applicable in Ghaziabad for transfer of under construction flat or something else can be done?