Kitchen Extension but Manhole in the way

[tlogic]

I'm at a very early stage of planning a Kitchen extension but need some input from you guys in relation to an existing manhole that will clash with the new extension foundations. The manhole is shared with my neighbour .

Theres two things I'd like to know which will put my mind at ease;

1. Would it be possible to move the manhole further out in the garden and build over the existing one, if so how can I approach this?

2. It appears my neighbour when they built their extension 15-20 years ago connected a 100mm pipe thorugh the brick enclosure of the manhole. This pipe enters the manhole probably 300mm - 400mm from the top of the manhole cover, the pipe is then connected to a down pipe to stop the water just dropping into the manhole. The invert level of the manhole is approx 1m. I can see this being a problem, is there anything i can do about this?

For me to go ahead with this extension I need to build over it to make it worth while. I've uploaded some pictures to give you an idea.


Inkedbackgarden2 LI

back garden


I haven't yet involved an architect but will do at some point in the next couple months. Just woundered what your thoughts are on this.

 

[leemoo]

Just wondering whether you could change it to an inspection chamber instead. That way you would still have access within the extension but would only be a small circle in the floor compared to a manhole size.

 

[Mick]

you can move them, you might need planning, at least for them to update their records (if they have any lol).

Have a look here:
Planning Permission | Drains and sewers | Planning Portal

I would get an idea of costs of a few builders (especially extension builders).

Are you doing all the works yourself?

If yes then I am guessing you are already competent builder and re-stacking the man hole would not be too much of an issue... you can even put right the connection from your neighbours. flow is the key here.

I am not saying to do this lol, but I have known many people to just move them mate....

Mick

 

[kegnkiwi]

We bought our house 16 years ago and it has been extended twice, what was the granny flat at the back actually has a manhole grate under the floor that was accessed through a trap door under the carpet. I think our house runs into this one and I think they moved the one that connects to the neighbours sewer system has been moved further into our back yard. I have just recently turned the granny flat into a big kitchen and laid solid wood floor but left a trap door with access under the island in the middle. It would be a pain to get to but it can be done.