If it is caused by the developer, that is, the developer has not obtained the pre-sale permit, then the buyer can ask the developer to refund the deposit and pay the interest loss. However, if the bank refuses to lend because of the buyer's own reasons, such as the buyer's bad credit, then the deposit that the buyer needs to bear the corresponding responsibility cannot be refunded. Article 11 of the Interim Measures for Personal Loans The application for personal loans shall meet the following conditions: (1) The borrower is a People's Republic of China (PRC) citizen with full capacity for civil conduct or an overseas natural person who meets the relevant provisions of the state; (2) The purpose of the loan is clear and legal; (3) The amount, duration and currency of the loan application are reasonable; (4) The borrower has the willingness and ability to repay; (5) The borrower's credit status is good and there is no significant bad credit record; (6) Other conditions required by the lender.

Legal objectivity:

Article 587 of the Civil Code: If the debtor performs the debt, the deposit shall be used as the price or recovered. If the party paying the deposit fails to perform the debt or the performance of the debt is not in conformity with the agreement, thus the purpose of the contract cannot be achieved, it has no right to request the return of the deposit; If the party receiving the deposit fails to perform the debt or the performance of the debt does not conform to the agreement, so that the purpose of the contract cannot be achieved, the deposit shall be returned twice.