No matter which department the property leaks to.

Housing and construction departments and quality supervision departments. According to the Civil Code of People's Republic of China (PRC), the warranty period of roofing waterproof works, waterproof toilets, rooms and external walls is 5 years. During the warranty period, the property must be maintained. If it is unattended, it can be reported in the housing and construction department and the quality supervision department to claim compensation for losses.