Is it allowed to close off the neighbor's drain?

Questioner

We live in a terraced house with multiple drains and there are no partitions between the houses. My house has a rain drain, can I put a partition between it so that I can no longer get the dirt through my drain?

Lawyer

Not without more, you must receive the water that naturally comes from a higher plot. This will be arranged in an easement. It is true that the neighbor must ensure a clean passage by removing the dirt.