Extension guttering in neighbours downpipe

26 Feb 2022
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United Kingdom
We have had a single storey extension built and the guttering from that connects to our neighbours downpipe which then goes in a underground system.
We live in terrace house and have never had a downpipe on our side, our original guttering connects to our other neighbours downpipe.

Is it OK to connect our extension guttering that way?
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Not if you don't have rights under the house deeds, which i doubt as this is a new extension.

Not straight forward really! but if you are in a terrace and each house is drained every other one then that is quite normal. If however your builder ( quite regularly ) causes issues with other people in the terrace, then that is poor building and will give you problems.
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Yeah we are in a terrace and it's every other one. The builder is a friend of theirs.
The wife hasn't liked us doing the extension from the beginning.
If you can't use your other neighbours drainpipe/guttering, or dig a soakaway, then you must be able to access the drainage system.

No can't use the other neighbours as to far away.
We can't have a soak away as the garden isn't long enough now.
The only way to access the drain system is to dig up their patio as other neighbour has a conservatory.
Don't think they would like that.
Building regs came out and said it was fine as its a shared drainage and we have to go to the nearest downpipe.

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