If you want to query the accurate information of individual property ownership certificate (including: the name of the owner of the house, the number of the property ownership certificate, the date of registration and approval, the building area, the design purpose of the house, the source of rights, whether the house is mortgaged, whether it is sealed up, etc.). ), you must bring your personal identity certificate and property ownership certificate to the archives or window of the local housing authority (real estate trading center, housing authority, housing authority) for inquiry.
If you haven't applied for a real estate license, you can check the sales contract on the website of the Housing Authority, enter the contract number and password (ask the developer for the password), and you can check your own purchase contract. There is no problem with the contract after filing with the Housing Authority.