Is it necessary to obtain the consent of the property for the renovation of the toilet sewer?

Let the property say about your family and ask him if he cares. If he is in charge, let him solve it. If you don't care, you can handle it yourself. And such a property can only be like this! ! ! You can't keep people alive.

Of course, you can handle it yourself, as long as you block your own entrance to the water, don't involve other managers, and the property and neighbors can't say anything.