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Collect evidence yourself, take pictures of all the leaks, calculate the damage, and then sue him, together with the property and the developer.
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Plug them up, what's bullish.
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Sue directly and let them give you money.
Because the leak is with him, it must be solved from him. Although it was repaired, it didn't solve the problem, so I still had to discuss with him to solve it. If not, find a middleman or property to come forward.
If there is a leak in the sewer pipe, the person who appears in the house will be responsible for repairing it.
Find a developer or property.
Dig the best permeable waterproofing can be done by yourself. >>>More
Unless it is a drain pipe or riser inside the top, it should be repaired in this way. But generally, the upstairs leaks and the downstairs still have to open the ceiling to cooperate with the inspection.
Of course, you can use waterproof cement to wipe all the joints on the ground, maybe it will be good!