Legal analysis: the contract has legal effect. It is stipulated that husband and wife have housing and equal rights of disposition. There is no rule that it needs to be handled together to be legal. However, according to the law, if one party disposes of all the property of * * * privately and causes losses, the spouse may sue the party selling the house for compensation. Other * * * owners (referring to the property owner on the property ownership registration certificate) have no capacity for civil conduct, and the signatory is both one of the property owners and the legal guardian of the person without capacity for civil conduct. For example, the husband has mental illness (physical illness does not limit the actor's civil capacity to buy and sell houses) and the wife (or parents, etc. ) is recognized as a guardian, the guardian's signature is valid. However, the beneficiaries of property rights can raise objections and should share the legitimate income.

2. Other property owners and signatories form an entrustment relationship. For example, the husband is a sailor and works at sea all the year round, so it is impossible to have time to participate in the activities of buying and selling houses. He can reach an agreement with his wife to entrust sales. At this time, the wife can sign in the name of the agent. Note: instead of signing a person's name, sign three names (assuming that the property owner is only husband and wife), one is the name of the wife, the other is the name of the husband (signed by the wife) and the other is the name of the agent entrusted by the husband (wife).

Legal basis: Article 502 of the Civil Code establishes a contract according to law, and the contract becomes effective upon its establishment, unless otherwise stipulated by law or agreed by the parties.

In accordance with the provisions of laws and administrative regulations, if the contract should go through the approval procedures, such provisions shall prevail. If the failure to go through the formalities such as approval affects the effectiveness of the contract, it will not affect the performance of the obligation clauses such as approval and the effectiveness of relevant clauses in the contract. If the party that should go through the formalities for approval fails to perform its obligations, the other party may require it to bear the responsibility for violating its obligations.

The modification, assignment and dissolution of a contract shall be subject to the provisions of laws and administrative regulations, and the provisions of the preceding paragraph shall apply and shall be subject to approval.