If the warranty construction team selected by the property is also a developer, then the developer is only responsible for maintenance, not for repair and decoration;
If it is decorated by a developer, the developer is responsible for maintenance, restoration of damaged decoration and compensation for your losses;
If the reason for the water leakage in your house upstairs is the water leakage caused by the wrong operation of the decoration company during the decoration, the decoration company is responsible for repairing and restoring the decoration, and compensating you for your losses. The decoration company signed a renovation contract with the house upstairs, and he will be responsible for it;
The above statement is about going through the formalities, and you need to sign a written contract, which should be called an agreement.
The contents of the agreement are time, place, participants, what problems to solve, when to solve them, who to solve them, what procedures to solve, and how to deal with problems that cannot be solved at maturity. Finally, sign the names of the participants, and those who have participated should be stamped with the official seal of the unit.