Legal analysis: minor children need parents' agency to buy a house. 1. Buying a house in full: parents choose a house on behalf of their children, bring their children's birth certificate or one-child certificate, household registration book, and the seals of the children and guardians, negotiate the terms of the contract with the developer, sign a commercial housing sales contract, write the children's name in the buyer's column and signature, and sign their own name at the signature of the legal representative. Second, loan mortgage: Only the minor's father or mother or even the legal agent such as parents can jointly apply. The father or mother signs a contract for the sale of commercial housing with their children, and then the father or mother applies for a loan from the bank as a loan applicant. At the same time, three notarizations are needed: notarization of guardianship, notarization of real estate share (if you buy a house for your child, you can agree that the child's real estate share is 99% and the parent's share is 1%) and notarization of irrevocable joint and several liability commitment letter.

Legal basis: Article 13 of the Regulations on the Registration of Real Estate in People's Republic of China (PRC), the parties or their agents shall apply to the real estate registration agency for real estate registration. Where a person without civil capacity or with limited civil capacity applies for real estate registration, his guardian shall apply for it on his behalf. The real estate registration agency records the application for registration in front of the real estate register, and the applicant may withdraw the application for registration.