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Extension against neighbours extension

Discussion in 'Building' started by jojothefirst, 3 Mar 2020.

  1. jojothefirst

    jojothefirst

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    Plan to do everything properly if and when we decide to do this project but just trying to get my head around this at this stage..
    Looking into building a single storey side return extension to make kitchen bigger and incorporate 2 outside buildings.
    Our neighbours extension forms the border of our property's so my thought was to tie into there extension.
    Spoke them about this and creating a party wall award but they have refused on the grounds it will affect them being able to sell there house and could cause damp problems.
    If i go down the route of getting surveyors in are they likely to go in my favour?

    Alternatively, is there a way to build a single skin wall on my land next to there extension and insulate the gap in between.

    Any input appriciated.
     
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  3. mrgobby

    mrgobby

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    If it’s their extension wall and within the boundary on their land then it’s their wall on their land and I can’t see your chances being very high
     
  4. ^woody^

    ^woody^

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    You have the right to create a new party wall astride the boundary, but not to use their existing wall on their side of the boundary.

    You would have to knock the wall down, build a new one and pay for the lot of it.

    Or build a completely new wall on your side of the boundary and this will need to meet the standards of an external wall and maintain a gap between the neighbours wall
     
  5. johnny2007

    johnny2007

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    Explain to them that the alternative to using their wall to tie yours is to leave a 4 inch gap which will attract leaves , birds (alive and dead), mammals (alive and dead cats mainly), rodents and inevitably dampness.
    Instead, i have never seen damp on a party wall.
    I say 4 inch gap assuming they built on the boundary.
    Of course, if they've left a larger gap (as they're supposed to), there would be a bigger gap but same problems.
     
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  7. garyo

    garyo

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    In these circumstances can you build 10mm away?
     
  8. johnny2007

    johnny2007

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    If you are within your boundary yes.
    Especially if it's permitted development.
    Speak to them and make them reason.
    A small gap between extensions is trouble for everyone.
     
  9. garyo

    garyo

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    My view is that if they've built right up to the boundary then it's only fair that you can too.

    Have you looked at their roof verge detail (assuming it's a monopitch roof) and established whether they're overhanging you, or whether they're actually 50mm set back to accommodate their dry verge or whatevers going on up there?
     
  10. Edddd

    Edddd

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    Maybe you could get an initial consultation with a surveyor? There is a presumption that the party wall process should enable work to take place, so the surveyors would probably reach a binding agreement that would allow you to proceed without the problematic gap. Unfortunately it could be quite expensive if that involves demolishing and rebuilding the existing wall.
     
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    DIYnot Local

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