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Conservatory & Garden Building Centre at Buckland, near Reigate in Surrey

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Planning Regulations - a guide

Under new regulations that came into effect from 1 October 2008 adding a Conservatory or Outbuilding to your home (excluding flats and maisonettes) is considered to be permitted development, not needing an application for planning permission, subject to the following limits and conditions:

Conservatories and Outbuildings


No more than half the area of land around the "original house" would be covered by additions or other buildings.

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.

Conservatories (extensions)

View a Video Guide

No conservatory forward of the principal elevation or side elevation fronting a highway

Maximum depth of a rear conservatory of

  • 3m for an attached house and
  • 4m for a detached house.


  • Maximum height of a conservatory of 4m.

    Maximum eaves height of a conservatory within 2m of the boundary of 3m.

    Side conservatories maximum height of 4m and width no more than half that of the original house

    No verandas, balconies or raised platforms

    On designated land* no permitted development for rear conservatories of more than one storey; no cladding of the exterior; no side conservatories

    Outbuildings (garages, sheds, summerhouses etc)

    View a Video Guide


    No outbuilding forward of the principal elevation fronting a highway

    Outbuildings to be single storey with a maximum eaves height of 2.5m and a maximum overall height of

  • 4m with a dual pitched roof
  • 3m for any other roof

    Maximum height of 2.5m within 2m of a boundary

    No verandas, balconies or raised platforms

    In National Parks, the Broads, Areas of Outstanding Natural Beauty and World Heritage Sites the maximum area to be covered by buildings, enclosures, containers and pools more than 20 metres from house to be limited to 10 square metres

    On designated land* buildings, enclosures, containers and pools at the side of properties will require planning permission

    Within the curtilage of listed buildings any outbuilding will require planning permission.



    *Designated land includes National Parks and the Broads, Areas of Outstanding Natural Beauty, Conservation Areas and World Heritage Sites.

    Where work is proposed to a listed building, listed building consent may be required

    We would recommend that you check these details with your local planning department and/or visit the

    Government Planning Portal


  • Building Regulations

    A separate requirement not usually applicable to buildings with a floor area of less than 30sqm (internal) although they are applicable to any size conservatory if there is an opening without an externally rated door between the house and the conservatory

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