Can the owner refuse the unified property management of the community?

You can't. According to the property management regulations: "A property management area is managed by a property management enterprise." In general, a residential area is a property management area, which can only be managed by a property enterprise.

So a residential area is managed by a property company. If the owners are dissatisfied with the property company, they must go through the owners' committee. Of course, the owner has the right to supervise the work of the realty service enterprise, and can also dismiss the realty service enterprise. However, this right cannot be exercised arbitrarily and without restriction, and must be exercised through the owners' committee in accordance with legal procedures. Some owners can't refuse the unified management of residential properties without owners' committees according to their own wishes.