These materials are used by buyers to apply for bank loans. If the seller doesn't sign, the information of the bank loan can't be reported, and there is no way to continue the transaction. Under normal circumstances, these materials should be signed at the buyer's loan bank, but your intermediary in the field mailed the materials for convenience. If you really don't feel at ease, you'd better go back and meet the buyer in person and then process the information.

If you really don't want to sell like this, and you haven't signed a sales contract or other entrustment, there is no liability for breach of contract. . .

All bank loans are like this. Before the loan is approved, there are a lot of blank contracts that need to be signed by buyers and sellers, and then they are reported to the bank for approval. How else can you sell your house? All your signatures only prove that you have agreed to sell your house to the buyer. If you don't sell it halfway after signing the contract, you will be liable for breach of contract. With your consent to sell the house, then this house can go through normal loan procedures. Banks can lend money to buyers, otherwise banks can't lend money to buyers out of thin air! It's no use signing your name until all the procedures have been completed. As long as your house is not closed for a day, it will still be your house, and you can't run away. What are you worried about?

As for the down payment receipt, it is necessary for the bank to approve the buyer's loan, because all the house payments are sent directly from the bank to the seller under the supervision of funds, and the transaction records are recorded for the most important completion.