Planning permission for your garden room

In many cases garden buildings and structures can be built in your garden or on the land around your house without the need to apply for planning permission. Examples of these are garages, summerhouses, sheds and log cabins to mention a few.

The current guidelines for planning permission and garden buildings is as follows:

  • Buildings or structures that are positioned within 2 metres of your boundary (in England) must not excedd 2.5m in height
  • Buildings or structures that are positioned more than 2 metres from your boundary must not exceed 3 metres in height, or more than 4 metres high with a ridged roof)
  • Garden Buildings are not permitted development if they are positioned forward of the principal elevation of your house. This means the house as it was originally built or as it stood on 1st July 1948
  • Outbuildings must not cover more than half the area of the land around the original house
  • You must apply for planning if your building or structure is to be used for running a business or storing commercial goods
  • You must apply for planning for separate self-contained living accommodation
  • You must apply for planning permission if your house is listed, you live within a conservation area, a national park or the broads, an area of outstanding natural beauty or a world heritage site. In these areas, the total area of any building (more than 20m from the wall of your house) must not exceed 10 sqm

Building Regulation Approval

In simple terms building regulation approval is separate to a planning application, a planning application asks “can you build it”. Building regulation deals with “how” you build it.

If your building is over 30sqm internally you will need to apply for building regulations approval.

All of the above information is supplied as a guide only, if you are in any doubt either contact your local planning authority where in most instances you are able to make a pre-application enquiry or alternatively visit the government planning portal website, their illustrative guide will quickly tell you if you need planning permission or not.

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