1. Inquire at the Housing Authority: Bring the original ID card and real estate license to the local housing authority, and ask the staff whether the real estate license is mortgaged by providing the real estate license number and personal ID number.
2. Inquire at the real estate registration center: Go to the local real estate registration center, provide the real estate license number and personal ID number, and ask the staff whether the real estate license is mortgaged.
3. Online inquiry: Enter the real estate license number and personal identification number through the official website of the Housing Authority or relevant inquiry tools to conduct online inquiry on whether the real estate license is mortgaged.
4. Consult the real estate agent: Real estate agents generally have information about whether the house is mortgaged, and can directly consult to know whether the house is mortgaged.
5. Consult the bank: If the house has been mortgaged, you can consult the mortgage bank to confirm whether to cancel the mortgage.