The external wall of my house is leaking, and the upstairs decoration leads to the leakage downstairs. Regardless of the property, can I refuse to pay the property management fee?

First of all, we must distinguish the responsible object. External wall leakage is the maintenance responsibility of the developer. If it is a property designated by the developer, the leakage of the external wall is the responsibility of the property. If they refuse to repair, they can refuse to pay the property fee. The water leakage caused by the upstairs decoration is the responsibility of the upstairs, and the upstairs should take the initiative to repair it. If it causes losses to your family, you should also be liable for compensation upstairs. If the upstairs refuses to repair, you can bring a lawsuit to the court for settlement.