2. If the buyer accidentally loses the loan contract, it can also be remedied in the following ways: the borrower can go to the developer or the Housing Authority to make a new copy. 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 can apply for the cancellation of the signed contract with relevant certificates, and then sign a new contract with the developer.
Legal basis: Article 465 of the Civil Code of People's Republic of China (PRC). Contracts established according to law are protected by law. A legally established contract is legally binding only on the parties, except as otherwise provided by law.