Do I need planning permission for a new roof to a house or garage if I am changing the shape of the roof ie pitched to flat or flat to pitched?
You will not need planning permission to change the shape of the roof unless:
The work will make this part of the house higher than the highest part of the existing roof.
The work will add more than 50 cubic meters to a semi-detached or detached house or 40 cubic meters if the property is terraced.
Any part would extend beyond the plane of the existing roof slope of the principal elevation that fronts a highway.
You live in a conservation area.
Please also see Loft conversions.
Additional points
You may need to apply for planning permission if you live in an Article 4 Direction Area. Please refer to leaflets “Article 4 Direction, A Householders Guide to Legislation”.
If your home is a Listed Building you will need Listed Building consent.
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