There is a large water mark on the top of the living room downstairs in my house, and the residents

If it is a floor heating leak, you will have to compensate, if you can prove that it is an improper installation of floor heating, you can ask the decoration company for compensation. This and you can't be together with the two things that you pay downstairs, that is, you have to pay downstairs, and how to compensate for decoration has to be argued separately. If it is a leak that the property is responsible for managing and repairing, such as sewer pipes, you will pay part of the damage, and the property will also bear part of the responsibility.

Whether 50,000 yuan is reasonable depends on the loss, and there is an appraisal firm, but then it is another expense, which can be negotiated first, and then entrusted.

This needs to be technically examined, because if it is caused by the quality of the floor heating in your home, your home will have to pay a certain responsibility. You can claim compensation from the underfloor heating provider.

If it's not for the water leakage problem in your renovation, you don't care.

Let the legal avenue protect your property.