The house purchase contract does not necessarily need to be signed by both spouses. As long as one person signs the house purchase contract, it is valid. However, both husband and wife need to be present, and the house purchased is the joint property of the husband and wife.

If the buyer of the house purchase contract belongs to a husband and wife, then both people need to sign at this time, and after the real estate certificate is completed, there will be a real estate certificate and a ** *There is a property ownership certificate, which also proves that the property is the joint property of both husband and wife. So if it is a house purchase contract and the buyer is one of the spouses, then you only need to buy it and the buyer must sign it. That’s it. At the same time, if you need a loan to buy a house, no matter whether the buyer is one party or both parties, you need to sign the loan contract.

"The People's Republic of China and the Civil Code"

Article 1062

Husbands and wives have equal rights to the same property. Processing rights.

"Interpretation of the Supreme People's Court on the Application of the Marriage and Family Section of the "People's Republic of China and Civil Code" (1)"

Article 28

If one party sells a house jointly owned by the couple without the consent of the other party, and a third party purchases it in good faith, pays a reasonable consideration and has registered the real estate, and the other party claims to recover the house, the People's Court will not support it.