If the buyer accidentally loses the loan contract, he can remedy it in the following ways: 1. The borrower can go to the developer or the housing authority to make a new copy. 2. If the borrower loses the loan contract before the bank mortgage, it is necessary for the borrower to declare the contract invalid. Three months later, he will apply for cancellation of the signed contract with relevant certificates, and then sign a new contract with the developer. 3. If the application for a loan to buy a house is a provident fund loan and there is no original house purchase contract, the borrower can also provide the information proof with the seal of the local house trading center. Article 465 of the Civil Code: Contracts established according to law shall be protected by law. A legally established contract is legally binding only on the parties, except as otherwise provided by law.

Legal objectivity:

Article 464 of the Civil Code of People's Republic of China (PRC) is an agreement between civil subjects to establish, change and terminate the civil legal relationship. Agreements on status relations such as marriage, adoption and guardianship shall be governed by legal provisions on such status relations; If there are no provisions, the provisions of this part can be applied according to their nature. Article 469 of the Civil Code of People's Republic of China (PRC) * * * The parties may conclude a contract in writing, orally or in other forms. Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained. A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.