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      Do I Need Planning Permission?
Extension? Do I need planning permission to build an extension click here>>
Loft conversion? Do I need planning permission to build a loft conversion click here>>

Don't assume that your project will automatically need planning permission. Many alterations do not.

Impotant ! It is recommended that you gain a Certificate of Lawfulness to prove that your project conforms to the conditions set out above. contact us for further information.

This depends on what you want to build, Some minor alterations and extensions, particularly to houses, can often be carried out without the need for planning permission. This is known as 'permitted development'.

It often depends also on whether your house has been extended in the past. Even if you now only want to put a conservatory on the back of your house, if you have previously had an extension, chances are you will need planning permission for the conservatory.

Planning Permission under permitted development rights. You will need to apply for Planning Permission to extend your property if:
  • the volume of the house would increase by more than 10% or 50m3 (whichever is greater) for terraced properties.
  • the volume of the house would increase by more than 15% or 70m3 (whichever is greater) for any other house type
  • you live in a conservation area, National park or Area of Outstanding Natural Beauty
  • the extension is closer to any highway than any part of the original house (a footpath is also classed as a highway)
  • the extension is higher then the roof of the original house or is over 4m high (pitched roof) or 3m high (flat roof)
  • you are using over half of your external garden space
  • the building is a Listed Building

These are only general rules for when you will need to apply for Planning Permission, and each project should be looked at individually. We would always advise seeking written confirmation that your development does not require Planning Permission from the local authority

Even if you have had no previous extensions, here are some examples of the type of extensions that in most cases need planning permission, to give you an idea:

  • A dormer window in the roof of your house facing the road;
  • A two story extension;
  • A extension to the front of your house, or to the side if it faces a road.

Whether you need planning permission to alter or extend your house depends on the size and position of what you want to do. You may need to know the volume of your proposed extension or an existing extension. The volume calculator may help click here.

Most alterations to business premises do need planning permission.

if you are extending your property you should always check this out. Why not use our site analysis service receive a detailed report find out more click here or contact us to discus your proposal, or talk to your local planning department at your local authority they should be able to advise you.

>>Click to see example of our plans

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Useful Downloads

THE PARTY WALL ETC ACT 1996
This booklet has been produced by the Department to explain in simple terms how the Party Wall etc Act 1996 ("the Act") may affect someone who either wishes to carry out work covered by the Act (the "Building Owner"), or receives notification under the Act of proposed adjacent work (the "Adjoining Owner").

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BUILDING REGULATIONS EXPLANATORY BOOKLET
This booklet provides an introduction to the Building Regulations in England and Wales and is intended for anyone proposing to carry out building projects. It is not a statement of the law but is intended to help you to understand the system.

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PLANNING: A GUIDE FOR HOUSEHOLDERS
This booklet gives a simplified guide to those aspects of the planning system which the householder is most likely to encounter. Revised version published June 2006.

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