1. Whose name is on the property certificate of the seller and whose signature has legal effect. Therefore, in this case, if it is the name on the husband's real estate license, the wife's signature and the husband's disapproval, the contract will be deemed invalid. Because the property owner must be present to sign the transfer.

2, whether immediate family members or husband and wife, in the absence of authorization, on behalf of the signing of the contract has no legal effect. More importantly, when you transfer ownership, you must go in person or entrust a legally authorized person.