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Roof Height Limit to Window for PD [Drawings]

Discussion in 'Building Regulations and Planning Permission' started by GateBeam, 8 Sep 2019.

  1. GateBeam

    GateBeam

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    Hi,

    Does the maximum height for a single story rear extension using a gable or hip roof have to below the existing window?
    Or can the I go above the window as long as I stay under the 4m PD rules?
    I can't find anything on the planning portal unfortunately.

    For example , in this drawing, would the maximum height be the "window height" or the "Bullnose Brick External Sill Height" or Can I go above these lines as long as I am under 4m?

    Maximum.png

    Thank you.
     
  2. ^woody^

    ^woody^

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    The dimension is the only criteria.
     
  3. catlad

    catlad

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    You can put a smaller window in and higher the cill
     
  4. GateBeam

    GateBeam

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    @^woody^

    I'm not quite understanding what you mean. The dimension for which part? Thanks.
     
  5. ^woody^

    ^woody^

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    The 4m dimension. The window is irrelevant.
     
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  6. GateBeam

    GateBeam

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    @catlad

    The extension's height is OK because the ceiling height is 2.4m.
    So there's no need to put a new window in the existing building as the extension height can be adjusted.
    So does the extension have to below the window?
     
  7. GateBeam

    GateBeam

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    @^woody^
    I see.(y) The reason for asking was because the proposed extension roof's height could block light to the existing window.
    But now I go as you suggested and take advantage of the full 4m and ignore the window:)
     
  8. Nakajo

    Nakajo

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    How will it block 'light'? Where I live most of the 'light', comes from the Sun, which, for most of the day, is above me.
     
  9. GateBeam

    GateBeam

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    @Nakajo
    Haha, my main reasoning was that I assumed there would be a rule similar to the 45 degree / right to light rule for any window that may become covered/shadowed by new buildings. But I now know there is not, so all good.
     
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