Circumstances Where You May Need Planning Permission for Your Loft Conversion
- If you want to extend higher than the highest part of the current roof
- If your proposed additional roof space exceeds 40 cubic meters for terrace houses or 50 cubic meters for detached or semi-detached houses
- (You will also need to ascertain if the roof has been extended in the past. This will then have to be factored into the allowance.)
- If you want a walk on balcony or veranda
- If the materials or style does not match the existing
- If the roof enlargement was to overhang the outer wall of the “original house”*.
- If you want a dormer to the front roof slope
- If you are living in a conservation area
Circumstances Where You May Need Planning Permission For Your Home Extension
- If more than half the area of land surrounding the “original house”* is covered by buildings/ additions
- If the extension will be forward of the principle elevation fronting a highway
- If the maximum height exceeds four meters
- If it extends beyond the rear wall of the original house by more than three meters if it’s an attached house or more than four meters if it’s a detached house
- If the materials or style does not match the existing
- If a side extension is more than one storey and/or is more than half the width of the “original house”
- If you are living in a conservation area and it exceeds the limitations mentioned here.
When Planning Permission is a MUST
- If you are living in a flat, maisonette, ‘other building’ or a house which has an applicable article 4 direction, you will require planning permission to carry out works which would otherwise fall under PD as these types of properties are stripped of their PD rights. Check out our blog post for more details.
*”Original house” meaning the house as it was originally built or as it stood on 1st July 1948 (if built before then).