How do you know the building is a big red book?
In the process of purchasing a house, confirming whether the property has a "big red book" (i.e. house ownership certificate) is a key step to protect your rights and interests. The following will present relevant content in a structured manner in terms of definitions, query methods, precautions, etc., and attach hot topic data in the past 10 days for reference.
1. What is the "Big Red Book"?

"Big Red Book" is the common name for "House Ownership Certificate", which is issued by the real estate registration agency to prove the owner's legal ownership of the house. In contrast, "small property rights houses" or unlicensed properties carry greater risks.
| Certificate type | Features | legal effect |
|---|---|---|
| Big red book (house ownership certificate) | Red cover, indicating the property owner, area, use and other information | Protected by law and can be traded and mortgaged |
| Small property rights or unlicensed houses | No nationally recognized ownership certificate | Rights and interests are not protected and transaction risks are high |
2. How to check whether the building is Dahongben?
1.Check the original property certificate: The seller is required to produce the original big red book and check whether the certificate number and property owner information are consistent with the records of the Housing Authority.
2.Online inquiry: Enter the property rights certificate number through the official website of the local real estate registration center or the "Government Service APP" to check the authenticity.
3.Housing Authority Verification: Bring your ID card and real estate information to the local housing authority window to apply for file inspection.
| Query method | Materials required | Time consuming |
|---|---|---|
| Offline Housing Authority Inquiry | Copy of ID card and real estate certificate | 1-3 working days |
| Online platform inquiry | Property certificate number/right holder’s name | Instant |
3. Related references of recent hot topics (last 10 days)
| Popular events | Related points | heat index |
|---|---|---|
| Unlicensed real estate disputes exposed in a city | Home buyers are unable to apply for loans because they don’t have a big red book | ★★★★ |
| Real estate registration nationwide network promoted | In the future, cross-regional property rights inquiries may be implemented | ★★★ |
4. Precautions
1.Beware of fake certificates: Some intermediaries may forge the Big Red Book, which needs to be verified through official channels.
2.Pay attention to the nature of the land: Even if there is a big red book, it needs to be confirmed that the land is "transferred" rather than "allocated".
3.Issues left over from history: Old houses may have discrepancies between the information on the certificate and the actual situation, and special verification is required.
Summary: Verify the authenticity of the real estate certificate through multiple channels and combine it with the latest policy trends to effectively avoid the risks of home purchase. If you find any doubts, it is recommended to consult a professional lawyer or the housing management department immediately.
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