The property is not allowed to be signed by the owner.

In China, it is illegal for a property management company to sign on behalf of the owner without the consent of the owner. The reason for this is the following：

1. Article 41 of the Property Law of People's Republic of China (PRC) stipulates: "The owner enjoys the property right to the house and its ancillary facilities, underground space, underground pipelines and the land attached to the house." This means that the owner has the ownership of his house and property, and has the right to accept, sell, exchange and give. No one can exercise these rights on behalf of the owner unless the owner entrusts an agent to exercise them on his behalf.

2. According to Article 9 of the Regulations on Property Management in People's Republic of China (PRC), entrusted by the owner, a property service enterprise shall sign a written service contract with the owner to provide property services for the owner. This means that the property management company should sign a written contract with the owner, and clearly stipulate the service content, service standards, service fees and other matters in the contract, so that the owner can make a clear decision.

Therefore, it is illegal for a property company to sign on behalf of the owner without the consent of the owner. If the owners are dissatisfied with this, they can complain to the relevant departments, seek judicial support and ask the property management company to compensate for the losses. At the same time, property companies should strengthen internal management, standardize behaviors, abide by relevant laws and regulations, and effectively protect the rights and interests of owners.