Planning permission for greenhouses

When is planning permission required to construct a greenhouse?

Normally it will not be necessary to obtain planning permission for the construction of a greenhouse as the construction of a greenhouse will normally be classed as a “permitted development” for which planning permission is not needed.

However, planning permission will be required in the following circumstances:

  • where the greenhouse is to be constructed in a front garden; or

  • where the overall height of the greenhouse would exceed 4 metres, in the case of a building with a ridged roof, or 3 metres, in any other case; or

  • where the greenhouse is to have a cubic content greater than 10 cubic metres and where any part of it will be situated within 5 metres of any part of the dwelling house;

  • where more than half of the area of land around the “original house” (the house as it was first built or as it stood on 1 July 1948 if it was built before that date) would be covered by the greenhouse or other buildings; or

  • where the greenhouse is to be built in a National Park, the Broads, an Area of Outstanding Natural Beauty or a World Heritage Site and it is to be more than 20 metres away from the house and over 10 cubic metres in volume; or

  • where the greenhouse is to be constructed on “designated land” (designated land includes National Parks, the Broads, Areas of Outstanding Natural Beauty, Conservation Areas and World Heritage Sites); or

  • where the greenhouse is to be constructed within the curtilage of a listed building planning permission may also be required.

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For more information on:

  • Is planning permission required to increase the height or size of an existing greenhouse?
  • How do I apply for planning permission?
  • Is there anything else I should consider before constructing a greenhouse?