There are several different types of extensions which are permitted to existing houses without the need of formal planning permission. The permitted extensions need to comply with conditions and limits which are listed in the General Permitted Development Order (GDPO) which is broken down into different classes of development:
• Class A: enlargement, improvement or other alteration to a dwellinghouse;
• Class B: an addition or alteration to a roof;
• Class C: any other alteration to the roof;
• Class D: construction of a porch outside any external door;
• Class E: construction of outbuildings or enclosures within the grounds of a dwelling;
• Class F: provision or replacement of hard surfacing (such as driveways and patios);
• Class G: construction of chimneys, flues or soil and vent pipes (SVPs)
• Class H: installation of microwave antenna
Unfortunately the GDPO – which was revised in October 2008 as part of the Planning Reform introduced to streamline the planning process – has been poorly written in places and left much scope for misinterpretation – even Appeal Inspectors are concluding appeals with enormous differences of opinion as they interpret the Order in vastly different ways. Householders wishing to undertake works which should be considered permitted development are advised to consult all available resources, including the newly issued Mini Guides produced by the Planning Portal and/or submitting a Certificate of Lawful Use or Development application to their local planning authority to ensure you are developing within the law.
PHD Associates can provide you with information as to what your property can achieve under the General Permitted Development Order, or you would like some plans and elevations drawn up to submit a Certificate of Lawful Use or Development application to your local planning authority, please contact us.
Indication of the footprint acheivable under permitted development.