Is it legal to rent the property on the roof of the unit to a mobile company privately?

Without the consent of the owner, the property company directly negotiates with the mobile company. Usually, the property company will give property leasing to the mobile company, sign a lease contract for a certain period, and the mobile company will pay the rent to the property company. Because the property management company occupied the rental income of the public area of the community by taking advantage of its position during its tenure as the property management office of the community, its essence was malicious occupation of relevant income, which was not made public and was obviously illegal.