Real estate bureau inquiry: If you want to inquire about the accurate information of personal real estate license (including: the name of the owner of the house, the title certificate number, the date of registration and approval, the building area, the design purpose of the house, the source of rights, whether the house is mortgaged, etc. ), you must bring your personal identification and real estate license to the archives or window of the local housing authority (real estate trading center, housing authority, housing authority) for inquiry.