What should I do if the main sewer leaks upstairs?

First of all, we must find out the cause of water leakage. The quality of the new house is unqualified, and the developer is responsible for the maintenance during the warranty period;

If it is caused by faults such as improper decoration upstairs, the upstairs is responsible for maintenance;

If the warranty period of the house has expired and belongs to the whole building, if the main sewer needs maintenance, and the house maintenance fund is collected, the property department shall apply for the use of the maintenance fund;

If the public maintenance fund is not collected, the part belonging to * * * shall be borne by all owners * * *;

If there is a problem with the exclusive part of the upstairs, according to the principle of fairness, the expenses will still be borne by the upstairs. If a lawsuit is filed, it may be necessary to make corresponding appraisal to identify the cause of water leakage and the amount of loss. Pay attention to the preservation of the "Housing Quality Guarantee", housing maintenance fund payment receipts and other evidence.