Demolishing extension and reinstating original back wall?

[sp1234]

Hello All,

We have bought a house with a rather dodgy lean-to rear extension which we would like to get demolished. We do not want to replace it with another extension as we think a side extension is more suited to the style of house.

The openings from the house to the extension are through the original window openings so we have assumed that once the extension is demolished we would be able to get replacement windows and patio doors with minimal work required. Besides from filling in the hole where the foundations are we would also need the kitchen sink and a radiator moved back into the main house.

Does anyone know how much this would cost and how long it would take to do? Also has anyone done this? I have searched various websites and I can't find anyone posting a similar question - I am not sure if this is because it is straight forward to do or because no one removes space from their home!

Thanks for your help (this is my first post so please go easy on me!)

 

[noseall]

Knowing the size of the extension might be a clue?

 

[sp1234]

Yes I guess that would help! It is 2.8mx4m.

 

[noseall]

Are the walls plastered, i.e. will there be issues regards outside walls with paint and plaster on them?

Also does the water main rise in this part of the building? I guess not if it is an extension.

First thing to do is have a door and window made ready.

Once you have isolated the electrics and plumbing then the main building could be demolished down to the slab in a day. The slab and sub-dpc masonry may also be removed in the same day depending on how it all goes. There is no need to remove the found's unless you actually need to.

If you were serious about a new extension then a soakaway hole for the new extension rainwater could be dug and some of the material chucked in the hole...mebbe...?

You could perhaps get the job done for £3 - 3.5k. A lot more info need though. For all i know you may want solid oak sash windows which would eat into a big part of £3k on their own.