Which department should I complain about the water leakage in the house?

Usually look for the property department first. Because the property department is generally entrusted by the developer to contact the maintenance affairs, the property department (entrusted by the developer) should contact the construction unit for warranty. Secondly, you can complain to the housing construction department and the quality supervision department. Warranty content and warranty period of various common parts:

First, the roof waterproof for 5 years;

Second, the wall, kitchen floor, basement, pipeline leakage 1 year;

Three, metope, ceiling plaster layer fall off 1 year;

Fourth, the ground is empty and cracked, and sand is blown in a large area 1 year.

If the house is within the warranty period, the developer shall bear the responsibility of free maintenance. You can complain to the housing construction department and the quality supervision department. Specifically, the warranty period of roofing waterproof works, toilets, rooms and external walls with waterproof requirements is 5 years. If the house is within the warranty period, the developer shall bear the responsibility of free maintenance.

Legal basis:

Article 296 of the Civil Code of People's Republic of China (PRC)

The property owner uses the adjacent property for water use, drainage, traffic, pipeline laying, etc. We should try our best to avoid causing damage to neighboring real estate owners.

Article 165 of the Civil Code of People's Republic of China (PRC)

If the actor infringes upon the civil rights and interests of others due to his fault, he shall bear the tort liability. If the actor is presumed to be at fault according to the law and cannot prove that he is not at fault, he shall bear tort liability.

Article 167th of the Civil Code of People's Republic of China (PRC)

If the infringement endangers the personal and property safety of others, the infringed party has the right to request the infringer to bear the tort liability such as stopping the infringement, removing the obstruction and eliminating the danger.

Article 509 of the Civil Code of People's Republic of China (PRC)

Both parties shall fully perform their respective obligations in accordance with the agreement.

The parties shall abide by the principle of good faith and fulfill the obligations of notification, assistance and confidentiality according to the nature, purpose and trading habits of the contract.

During the performance of the contract, the parties shall avoid wasting resources, polluting the environment and destroying the ecology.

Article 51 of the Regulations on Property Management

Water supply, power supply, gas supply, heating, communication, cable television and other units shall bear the responsibility for the maintenance and conservation of relevant pipelines and facilities and equipment within the property management area according to law. If the units specified in the preceding paragraph temporarily occupy or dig roads and sites due to maintenance, they shall promptly restore the original state.