Legal advice, my home is an old building, and now there is a leak in the bathroom upstairs, and there is no property. How about this legal responsibility? If a lawsuit is filed, what is the procedure?

Its legal basis is Article 83 of the General Principles of Civil Law: the neighboring parties of real estate should correctly handle the neighboring relations in terms of water interception, drainage, transportation, ventilation and lighting in accordance with the spirit of convenient production, convenient life, solidarity and mutual assistance, fairness and reasonableness. If it causes obstruction or loss to the neighboring party, it shall stop the infringement, remove the obstruction and compensate for the loss. If the neighboring party fails to perform the court's judgment, the injured party may ask the construction team to repair it downstairs, and the expenses incurred may be claimed by the upstairs owner to the court. If there is no compensation upstairs, you can apply to the court for enforcement. Therefore, if the water leakage is not caused by the people downstairs, it is the responsibility of the upstairs, and the upstairs has the responsibility to repair it until the downstairs no longer leaks, and compensate the corresponding losses downstairs. Some people just soften up when you go to court and can't do it anymore. Hehe, I didn't say to cut off the water pipe and install it. Isn't this era too cruel? Waterproof warranty for 5 years and pipeline for 2 years. During the warranty period, the developer is not responsible. If it is not handled, you can complain to the local quality supervision department. They specialize in this matter, and then you can't go to court, or you will be responsible for delaying the warranty period! In addition, if the same place can't be repaired twice during the warranty period, you can find someone to repair it yourself, and the cost will be paid by the developer. If it is not handled by people upstairs as soon as possible during the warranty period, it will provide more information and better suggestions, and provide professional technical consultation on waterproof and leakage repair of concrete for free, so as to avoid the troubles of repairing today, leaking tomorrow, repairing year after year and leaking year after year.