Permitted Development, Explained

Published on 21st May 2016
Planning permission can be a daunting thought, often enough to keep any thoughts of a home renovation way off most people radar. But, what most people don’t always realise is that many home improvement projects can be completed under your permitted development rights – which allow for certain construction to be undertaken without the need for lengthy planning applications.

0847.dead sapce side extension (2)

Your permitted development rights derive from a general planning permission granted not by the local authority but by parliament itself. So if you live in a flat, maisonette of other ‘nonstandard’ property, bear in mind that the permitted development rights which apply to many common projects for houses may not apply.

In some areas of the country, known generally as ‘designated areas’, permitted development rights are also more restricted. So, if you live in a Conservation Area, a National Park, an Area of Outstanding Natural Beauty or the Norfolk or Suffolk Broads, you will need to consult your local authority in regards to any project to plan to undertake on your property. This also applies if the property is a listed building.

Now that’s out of the way, let’s get on with the good news! Adding a conservatory to your home, can be undertaken without the lengthy hassle of a planning application! By following the rules laid out by your permitted development rights, you can get straight on with creating an amazing new space to enjoy in your home.

In order to comply with permitted development your new conservatory should be subject to the limits and conditions we’ve listed below:

  • No more than half the area of land around the “original house”[1] would be covered by additions or other buildings.
  • No extension forward of the principal elevation or side elevation fronting a highway.
  • No extension to be higher than the highest part of the roof.
  • Maximum depth of a single-storey rear extension of three metres for an attached house and four metres for a detached house.
  • Maximum height of a single-storey rear extension of four metres.
  • Maximum depth of a rear extension of more than one storey of three metres including ground floor.
  • Maximum eaves height of an extension within two metres of the boundary of three metres.
  • Maximum eaves and ridge height of extension no higher than existing house.
  • Side extensions to be single storey with maximum height of four metres and width no more than half that of the original house.
  • Roof pitch of extensions higher than one storey to match existing house.
  • No verandas, balconies or raised platforms.
  • On designated land[2] no permitted development for rear extensions of more than one storey; no cladding of the exterior; no side extensions.

If that still seems like a lot to get your head around, our expert Apropos designers will be happy to help discuss your permitted development rights with you and steer your conservatory design towards to permitted parameters.

To arrange an obligation free design consultation with your local designer, get in touch today.

[1] The term “original house” means the house as it was first built or as it stood on 1 July 1948 (if it was built before that date). Although you may not have built an extension to the house, a previous owner may have done so.

[2] Designated land includes national parks and the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites.

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