My neighbour has asked if they can run a drain underground through my garden to meet the main combined drain for the row of houses.
They currently have a soakaway for water from their roof but this has failed. Instead of replacing it they want to run a pipe underground to take the water to the main drain but joining it in my garden rather than theirs (I think their inspection cover has been concreted over).
It would mean digging up part of my patio, flowerbeds etc. What would you do? My instinct is to say no. Whose responsibly would it become if it gets blocked? It's disruptive to my garden, plants/hedge will have to come out) would my insurance provider be happy with it? Any risks if it goes wrong (I think it would be done as a diy job rather than by a contractor). I don't really know anything about drainage and plumbing so any advice would be very gratefully received!
thread title edited by MNHQ at OP's request.