Simply replacing your existing flat roof with a new one should be a pretty straightforward process.
Pitched roof extension planning permission.
Is planning permission required.
Any upper floor window located in a side elevation must be obscure glazed.
In most cases a like for like replacement does not require any planning permission.
This should be a straightforward process especially if it is a low pitch roof.
When converting your flat roof into a pitched roof that s when planning permission may come into play.
Check guidance notes from your local council.
Roof pitch must match existing house as far as practicable note that this also applies to any upper storey built on an existing extension.
Pitched roof extensions typically cost more simply because they involve more work and take longer to complete.
There are height restrictions depending on the type of roof 4m for dual pitch roofs 3m for other roofs and 2 5m when the building is within 2m of the boundary outbuildings may only be single storey with the maximum eaves height remaining at 2 5m.
However you will likely need to apply for planning permission as it is not a like for like replacement.
Any alteration to project no more than 150 millimetres from the existing roof plane.
If mansard roof extensions are common in your area your local council may have produced specific planning design guidance on mansard roofs aimed at.
Converting your flat roof to a pitched roof does require planning permission as any alteration that is higher than the highest part of the existing roof requires approval.
Pitched roof extensions afford a more traditional look and that means they blend in better with the style of many houses.
Is planning permission required.
You do not normally need to apply for planning permission to re roof your house or to insert roof lights or skylights as the permitted development rules allow for roof alterations subject to the following limits and conditions.
How big can a single storey extension be without planning permission.
Pros of a pitched roof extension.
For instance if you are planning on increasing.
All side extensions of more than one.
And non opening unless the openable part is more than 1 7 metres above the floor.
Converting a flat garage roof to a pitched roof is a relatively simple job for professional roofing contractors.