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Additional Roofspace vol measured externally or internally?

Discussion in 'Building Regulations and Planning Permission' started by freddiemercurystwin, 7 Jan 2011.

  1. freddiemercurystwin

    freddiemercurystwin

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    As per the title really, under PD is the additional roofspace volume created by a dormer for instance measured externally or internally? I always understood it to be internal however the calculator doodar on the Planning Portal states external dims are to be used: http://www.planningportal.gov.uk/planning/usefultools/volume
     
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  3. jeds

    jeds

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    Defo external.
     
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  4. DevilDamo

    DevilDamo

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    Planning is and has always been gross external, whereas it's internal for building reg's :)
     
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