What should I do if the new house is flooded by the property?

The landlord's question is not clear: the property management company serves the owner, how did they flood the owner's house?

My understanding is that either the upstairs leaked to the downstairs and flooded the house downstairs; Either heating or tap water flooded the owner's home; Either the sewer is blocked and the water flows back, causing the loss of the owner's home;

When this problem occurs, it is necessary to distinguish the responsibility, whether it is poor property management, construction quality problems, upstairs owners' problems, natural disasters or other reasons, and analyze it according to the facts.

If there is a dispute and no one really bears the responsibility, then resort to the law.