How to compensate for the leakage and flooding of the house downstairs?

Legal analysis: during the warranty period of the house, the developer is responsible for the water leakage caused by non-human reasons. Water leakage is not caused by the property, but if the property is neglected in management, or problems are not handled in time, resulting in increased losses or more serious problems, then the property should bear the responsibility. If property losses are caused by infringing upon the personal rights and interests of others, compensation shall be made according to the losses suffered by the infringed. The loss of the infringed is difficult to determine, so the infringer gains benefits.

Legal basis: 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 through 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.