2): Usually only one down payment is paid for second-hand transactions, and the down payment is paid on the day of transfer, and the final payment is paid after the account is completed.
3): This owner is a little clever. This problem can actually be handled like this. You can ask the intermediary for help. 800 thousand can be released from the bank
However, this will lead to the cost of the mat, so the owner wants you to mat, so there is no need to pay the fee.
4): If you have to give money in advance, you have to find a reliable and large-scale intermediary to sign the contract. The main content of the contract is that you help pay back the 800 thousand from the bank. You can let the owner go to the bank in advance to apply for early repayment. On the day of repayment, you can return it with your intermediary friends, and you can take the acceptance form. Then the real estate bureau must keep it for itself. Never give it to the owner. If he wants to give him a copy, the tax payment will be handled by the intermediary in the future.
5): Intermediary, what's the use? Is to play the role of "supervision", if there is any problem, tell him.
6): As long as you have the certificate, he can't run away. It's not that easy to reissue the real estate license. It takes two months.