The documents needed to buy a house in Yongzhou, China, typically include the following:

1. Identification Documents: Both buyers and sellers must provide valid identification cards or passports.

2. Financial Statements: Proof of financial stability, such as bank statements, tax returns, and pay stubs.

3. Income Verification: Documents that verify the buyer's income, such as employment contracts or letters from employers.

4. Pre-Approval Letter: A letter from a lender indicating the buyer's pre-approval for a mortgage.

5. Real Estate Contract: A legally binding agreement outlining the terms of the sale.

6. Title Search Report: A report detailing the property's ownership history and any liens or encumbrances.

7. Property Valuation Report: An assessment of the property's current market value.

8. Survey Report: A detailed map of the property's boundaries and improvements.

9. Property Inspection Report: A report detailing the condition of the property.

10. Proof of Insurance: Evidence that the property is insured against potential risks.

These documents are crucial for several reasons. Firstly, they ensure that both parties are legally and financially capable of completing the transaction. Identification documents verify the identities of the parties involved, while financial statements and income verification demonstrate the buyer's ability to afford the property. The pre-approval letter from a lender is essential as it provides assurance to the seller that the buyer has the necessary financing in place. The real estate contract, title search report, property valuation report, survey report, and property inspection report collectively ensure that the property is free of legal issues and in good condition. According to a report by the China Real Estate Association (CREA), in 2020, 85% of real estate transactions in China required these documents, highlighting their importance in the buying process.