If the house has gone through the mortgage formalities, we can directly enter the title certificate number through official website, the local housing authority, and then we can know all the information of this house. You can also go to the local housing management department to inquire, and then you need to submit the real estate license and your ID card. After all, real estate belongs to personal privacy, and others have no right to inquire directly. Only after the issuance, they have the right to inquire.