First, it usually takes about half a year to obtain a real estate certificate. Now you get it cheaper. When the house price rises after the certificate is issued, he can regret it. There is no use signing a contract. He can compensate you for liquidated damages. This is a risk.
2. Justice is deceived by the intermediary company. There are three types of justice in real estate:
1. The donation is fair, but the risk is that he has the right to cancel the donation.
2. Notarization of the contract. Once the contract is signed and fingerprinted, it becomes effective. Notarization is superfluous.
3. Entrust notarization, as agents often do. The agent will say that the notarized house belongs to you. In fact, entrusted notarization cannot prove the transfer of property rights. You are just a trustee who can handle the procedures related to the house.
To sum up, only transfer is the safest.