1. Loan to buy a suite, you can find the housing through the housing registration system, and then borrow money to buy a house, which counts as two sets.

I bought a suite with a loan and later sold it. You can't find the real estate through the house registration system, but you can find the loan record in the bank credit information system, and then loan a house, which counts as two sets.

3. I bought a suite in full and sold it, but the house registration system can't find it. Then buy a house with a loan, not counting two sets.

4. I bought a suite in full, and I can check the property through the house registration system. There are two sets of loans to buy a house.

5. If the local area does not have the query conditions of the housing registration system for the time being, and the bank conducts due diligence to verify that the purchaser already owns a house, then buying a house is also considered as two sets.