Do I have to sign an agreement to build a house in the name of a relative? Because relatives voluntarily immigrated to our town to build a house, they went to the countryside to give it to them. ...

A notarization can avoid future disputes.

The function of entrusted notarization is to entrust his house ownership to you. You go to the notary office and the notary will do it for you.

The other party wants both husband and wife's ID cards, household registration books, and proof of property rights, so you can be a personal ID card.