If the house has a loan, it can refinance. This kind of mortgaged property is mortgaged again, which is called "secondary mortgage". The process of handling the second mortgage of the house: 1. With the consent of the bank, the buyer and the seller conduct real estate transactions and sign a purchase contract or letter of intent; 2. Apply for a loan from the bank and submit relevant materials; 3. After the credit investigation and review of the borrower, the bank will inform the borrower of the review results. If the bank agrees to the loan, it will sign a contract with the borrower and guarantor, and sign a supplementary contract for building mortgage loan with the seller, and the seller will pay off the difference between the loan amount and the loan principal and interest owed by the seller; 4. The borrower entrusts the bank to handle the formalities of real estate transaction transfer, mortgage registration and real estate insurance with the seller; 5. After obtaining the land and house property right certificate, the bank will transfer the loan funds to the mortgage loan account and related accounts of the seller at the original loan outlet to repay the principal and interest of the mortgage loan owed by the seller, and then transfer the remaining funds to the account opened by the seller in the bank; 6. The borrower repays the loan on schedule.

Legal objectivity:

Article 9 of the Measures for the Administration of Urban Real Estate Mortgage: If more than two mortgages are set for the same real estate, the mortgagor shall inform the mortgagee of the mortgaged conditions. The creditor's rights secured by the mortgagor shall not exceed the value of the mortgaged property. After the real estate is mortgaged, if the value of the mortgaged real estate is greater than the balance of the secured creditor's rights, it may be mortgaged again, but it shall not exceed the balance.