A tool for helping calculate the volume of common types of house and loft extensions.
Planning portal roof extensions.
Roof pitch of extensions higher than one storey to match that of the existing house as far as is practicable.
Roof pitch must match existing house as far as practicable note that this also applies to any upper storey built on an existing extension.
From the design stage to planning through to working out costs and the actual build project building an extension is a big commitment.
Find your council enter a postcode to find contact details for the council in your area.
Any alteration to project no more than 150 millimetres from the existing roof plane.
On the planning portal under your responsibilities other considerations before you start work.
Extensions two storey 5 roof pitch.
Materials used in exterior work to be similar in.
Roof pitch of extensions higher than one storey to match that of the existing house as far as is practicable.
Conservatory extensions single storey extensions two storey loft conversion outbuildings porches.
Roof extensions not to be permitted development in designated areas roof extensions apart from hip to gable ones to be set back as far as practicable at least 20cm from the original eaves the roof enlargement cannot overhang the outer face of the wall of the original house.
If the development is within the curtilage of a listed building you may need to submit a planning application for the work unless listed building consent has already been granted.
The professional portal is a hub of tools services and guidance for those working in the planning and building industry.
What to consider before planning an extension find a trade professional use our partner directories from riba fmb rtpi or cieem to find an architect builder planning consultant or ecologist to help with your project or development.
If you live in a house which is a listed building it is likely that you will need listed building consent for any building operations.
And non opening unless the openable part is more than 1 7 metres above the floor.