Building over a drain inspection point

[Dr C]

We are looking into doing a side return extension on our Victorian terrace but not sure if it’s possible with the location of our drain inspection point (see pic).
We want to extend the kitchen right out to the fence line but this would be over the drain Inspection point. We are in a row of 4 with the other properties having inspection points in the same location and next doors drain flows into ours so we don’t think diverting the drain out towards the garden to the end of the extension to keep it outside is possible?

Is it possible to have the inspection point inside the kitchen under a sealed access point? The inspection chamber itself is only shallow

 

[Notch7]

Unfortunately that drain may put a stop to your extension plans.

No you can't have a sealed drain cover on a public sewer, so your only option is to move outside, which looks unlikely.

 

[johnny2007]

Build a nice canopy in that strip of land and some wooden walls, then use it as a second shed to keep things that don't rot.
You'll be surprised how many things are made of plastic and don't fear a bit of cold and damp.
That will free some space indoors.
You could even use the space as a laundry, but of course w/m won't be perfectly dry as if it was indoors.