Replacement consumer unit. Listed building consent ?

Hi guys. I have been asked to replace a consumer unit in a listed building. A domestic apartment to be precise. The existing consumer unit is a bog standard plastic split load board fitted probably 20 years ago. Am I likely to require any sort of permission as the building is listed. There are no other works involved so not altering any existing or historical features. Cheers. Gary

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  • From my reading of listed building guidelines, providing you aren't making changes to the fabric of the building you are ok. But if you need to start chopping holes in walls, ceilings etc then you may have an issue. If everything is covered they don't like cables or back boxes chased into walls or downlights in plaster and lath ceilings.

    Starting point would be to see what on the building is actually listed. Do the eicr, see if you will need to make other changes.

    If it's a thatched cottage the biggest issue is likely to be pvc cables in the loft without protection, then the debate about what's acceptable. Also if there are overhead power lines there should be a type 1 spd on the incoming supply. I have stopped working on thatched cottages as I think I am leaving myself open to risk if there's anything less than steel conduit containment in the loft and most people won't pay for it. But most others take a different view.

    If they have a thatched roof some insurance companies won't accept EICR's with C3's on.

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  • From my reading of listed building guidelines, providing you aren't making changes to the fabric of the building you are ok. But if you need to start chopping holes in walls, ceilings etc then you may have an issue. If everything is covered they don't like cables or back boxes chased into walls or downlights in plaster and lath ceilings.

    Starting point would be to see what on the building is actually listed. Do the eicr, see if you will need to make other changes.

    If it's a thatched cottage the biggest issue is likely to be pvc cables in the loft without protection, then the debate about what's acceptable. Also if there are overhead power lines there should be a type 1 spd on the incoming supply. I have stopped working on thatched cottages as I think I am leaving myself open to risk if there's anything less than steel conduit containment in the loft and most people won't pay for it. But most others take a different view.

    If they have a thatched roof some insurance companies won't accept EICR's with C3's on.

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