Shared drainpipe on property line

Questioner

Dear reader, due to water damage in the garden during heavy rainfall, we want to connect a drain to the drainpipe that we share with the neighbours. The drainpipe is on the property boundary. Can the neighbours legally object to this or is this permitted? I would like to hear from you,

Lawyer

You want to extend the drainage channel? Because it is on the property line, you also have a say in it. Furthermore, the water drainage will not be obstructed, so I do not see on what grounds your neighbours could object. If he does, he has no interest in it.