Is it legal for the property to outsource the high-rise hoisting and transportation business to someone?

Property outsourcing is legal. Property management companies have the right to contract a certain job to a third party.

If the property does not force the owner to use this person to hoist and transport materials, the owner can freely choose the way to transport materials, then the property will not be responsible.

If the property requires the owner to transport materials through its designated personnel, this behavior violates the unfair competition law and property management regulations, and the owner can complain to the industrial and commercial department and the housing management department.