Is there any relevant law, and does the property have the obligation to supervise the residents to do waterproof work before renovation?

As for the property losses caused by the inadequate waterproofing of the upstairs households' houses, the responsibility is not borne by the property management company, which provides property services and has no power to issue any compulsory orders to the owners. Therefore, according to the provisions of the Property Law and Tort Liability Law, upstairs residents should be liable for the economic losses caused by water leakage and should be waterproof immediately to avoid similar situations. If negotiation fails, or if they are unwilling to negotiate, they may directly bring a civil lawsuit to the people's court.