The permitted development rules allow for roof alterations without the need for planning permission subject to the following limits and conditions.
Planning permission for roof windows.
They do not protrude more than 150mm beyond the plane of the roof slope they are no higher than the highest part of the roof.
These are specific to any other alteration to the roof of a dwellinghouse as detailed in schedule 2 part 1 class c of the the town and country planning general permitted development england order 2015 as amended.
Protrude more than 150 millimetres above the existing roof plane.
Whether you need planning permission to install your new roof windows or not you must still follow any relevant building regulations outlined in the planning portal and seek building regulations approval for any work you have carried out.
The window projects more than 150mm from the roof plane.
You plan to install any windows more than 150mm above the existing roof plane.
Or any listed building including tenements flats and business properties this is known as listed building consent.
Any opening to be 1 7m above the floor.
Are installed on the side of your building without any obscure glazing to protect privacy.
You do not normally need to apply for planning permission to re roof your house or to insert roof lights or skylights.
The window will sit higher than the current peak of the roof.
You ll need planning permission to install a roof window if any of the following situations apply.
A side facing window doesn t have obscuring glazing.
Are higher than the highest part of the roof or stand out above the roof ridge.
Any alteration to the roof cannot project more than 150 millimetres from the existing roof plane.
When you will need planning and building permission.
Any windows installed must protrude no more than 150 millimetres above the existing roof plane.
Planning permission and listed building consent you will need planning permission if you plan to replace or repair windows in.
No alteration to be higher than the highest part of the roof.
A conservation area.
However roof windows need planning permission if they.
Loft conversions and windows in the roof permissions maintenance and repair permissions new dwellings permissions satellite and tv antennae permissions windows doors and sunpipes permissions commercial developments.
Side facing windows to be obscure glazed.
You plan to install a.
You will need planning permission for your roof window if.
The window will protrude over the roof ridge or be higher than the highest part of the roof.