Depending on the situation, if the head of the household is the owner of the house, the demolition compensation agreement signed by someone other than the head of the household is invalid. If the head of the household is not the owner of the house, but the owner signs the expropriation compensation agreement, is valid.

A house demolition agreement is first of all a kind of agreement. An agreement is also a contract. The contract must have parties, and the parties usually have at least two parties. The head of the household is one of the parties. If the head of the household does not sign, the agreement will be invalid. Therefore, the head of the household must sign the house demolition agreement, otherwise the agreement will not be established. Extended information A house demolition contract refers to an agreement on house demolition matters reached between the house demolisher and the person being demolished. The house demolition contract is a bilateral contract. The demolisher is responsible for compensating and resettling the demolished people, and the demolished people should move out of the demolition site as agreed. Compared with other contracts, the biggest feature of a house demolition contract is its planning, comprehensiveness and party-specificity. After the demolition agreement is signed, it must be submitted to the housing demolition authority for filing, and can be notarized by a notary office. However, when demolishing a house that is managed in accordance with the law, if the custodian is the house demolition authority, the compensation and resettlement agreement must be notarized by a notary agency, and evidence preservation must be carried out. At the same time, the demolished person should hand over the original land use certificate, building ownership certificate or certificate of use to the demolisher, who will hand it over to the real estate ownership management department for cancellation registration procedures.

Legal basis:

"Regulations on Expropriation and Compensation of Houses on State-owned Land" Article 25 The house expropriation department and the expropriated persons shall, in accordance with the provisions of these regulations, negotiate on the compensation methods, compensation A compensation agreement shall be entered into regarding the amount and payment period, the location and area of ??the house used for property rights exchange, relocation fees, temporary resettlement fees or turnover housing, losses from production and business suspension, relocation period, transition method and transition period, etc. After a compensation agreement is concluded, if one party fails to perform its obligations under the compensation agreement, the other party may file a lawsuit in accordance with the law.

Article 26 If the house expropriation department and the expropriated person fail to reach a compensation agreement within the contract period specified in the expropriation compensation plan, or the owner of the expropriated house is unclear, the house expropriation department shall submit a request for compensation for the expropriation of the house. The people's government at the city or county level that makes the expropriation decision shall, in accordance with the provisions of these Regulations, make a compensation decision in accordance with the expropriation compensation plan and make an announcement within the scope of house expropriation.