As long as both husband and wife are legal couples and have marriage certificates, when selling the property jointly owned by both husband and wife or under the name of either husband and wife, both husband and wife need to bring their ID card, marriage certificate, real estate license, deed tax certificate and proof of housing registered in their name to the housing management office for signing procedures before selling the house to others.

Extended data:

First, the principle of publicity is the real right of real estate. When a husband and wife sign a sales contract, the buyer has the obligation to review the registered name of the house. When registered in the name of husband and wife or non-signatory, the buyer only signs a contract with one of the husband and wife, and it cannot be easily determined that the buyer is in good faith without the authorization of the other husband and wife, because Article 5 1 of the Contract Law stipulates that if the person who has no right to dispose of other people's property is ratified by the obligee or the person who has no right to dispose of it obtains the right to dispose of it after signing the contract, the contract is valid. Therefore, in this case, the contract is a contract with undetermined validity and needs the ratification of the other spouse.

Second, if the house is registered in the name of the signatory of both husband and wife, then the contract should be considered valid, because the purchaser only has the obligation to formally review the property rights of the house. The Property Law stipulates that the title certificate of a house is the proof of the ownership of real estate, and the buyer can believe that the seller in the house sales contract is the only property owner and has the right to dispose of the house. The buyer has no obligation to examine whether the seller is married or not, and whether the transferred house is the same property as the husband and wife registered under only one name.

References:

Marriage Law of the People's Republic of China (200 1 Amendment)

People's Republic of China (PRC) property right law

People's Republic of China (PRC) City Real Estate Management Law (revised in 2009)