Relocating soil pipe and inspection chamber

[rabcnesbit]

I live in a 1930's mid-terraced building. An rear extension (which is the kitchen) was built sometime ago (before I bought the property) which has the inspection chamber under the kitchen floor, and the soil pipe in the kitchen (boxed in). Apparently this was allowed when the extension was built years ago. I want to relocate these (soil pipe and inspection chamber) outside (i.e. out of the kitchen extension). I worry about an unfortunate incident where the soil pipe or inspection chamber is blocked or damage and get foul smell and/or excrement in the kitchen!!! My question how difficult and how much roughly this will cost? I am aware I would need permission from the relevant authorities (water/sewage company etc.). Pictures attached. The red circle by the washing machine is where the inspection chamber currently is, and the other picture is the boxed soil pipe. Thanks

 

[noseall]

My question how difficult and how much roughly this will cost?

How deep is the drain?

Does it service all the properties in the row and does it run in a straight line?

 

[rabcnesbit]

How deep is the drain?

Does it service all the properties in the row and does it run in a straight line?

Hi noseall, thanks for your response. Unfortunately, I can not answer those questions (as it obviously require actually breaking/digging up the floor etc.). However, I guess this might be info I might be able to get from the water/sewage company, not sure? If it helps, my neighbour (adjoining my building) had an extension recently built, and the soil pipe and inspection chamber were relocated outside of the extension foot print, so it would appear it can be done. Obviously, my extension is already built over the inspection chamber, with the soil pipe inside the extension. I think what I am really after is whether it can done (relocated) and estimated cost, so I know whether it is a project I can afford to pursue? Thank you.

 

[noseall]

I think what I am really after is whether it can done

If its practical - yes.

estimated cost, so I know whether it is a project I can afford to pursue? Thank you.

Not a clue until the questions are answered.
Start at £3k and go upwards.
£20k wouldn't be silly if it was deep

 

[thomp1983]

It's going to be seriously expensive especially given your not going to actually gain anything.

There's no reason for there to be any issue with your sewer but if your after piece of mind ask your neighbour if either they have a cctv survey showing your sewer from when there sewer was moved or if they'd mind you having a survey done using their inspection chamber.

A cctv survey should set you back between £300 - £800 and will actually show if there's any reason for concern.