Conservatories Planning Permission

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

  • No more than half the area of land around the "original house"* 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* no permitted development for rear extensions of more than one storey; no cladding of the exterior; no side extensions.

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

* 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.

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

Building Regulations

Building regulations will generally apply if you want to build an extension to your home. However, conservatories are normally exempt when they meet a number of conditions.

Conservatories

Conservatories are normally exempt from building regulations when:

  1. They are built at ground level and are less than 30 square metres in floor area
  2. At least half of the new wall and three quarters of the roof is either glazed or translucent material
  3. The conservatory is separated from the house by external quality door(s).
  4. Glazing and any fixed electrical installations comply with the applicable building regulations requirements (see below).

You are advised not to construct conservatories where they will restrict ladder access to windows serving rooms in roof or loft conversions, particularly if any of the windows are intended to help escape or rescue if there is a fire.

Any new structural opening between the conservatory and the existing house will require building regulations approval, even if the conservatory itself is an exempt structure.

Further Information

The following common work section gives an indication of another element normally required to satisfy the requirements of the Regulations for conservatories:

Doors and windows : Planning Permission

Planning permission is not normally required for repairing, fitting or replacing doors and windows (including double glazing).

However, if the building is listed or is in a conservation area (or other designated area) you should consult with your local planning authority.

Also, if you are a leaseholder, you may first need to get permission from your landlord or management company.

Building Regulations

Since 1 April 2002 building regulations have applied to all replacement glazing. The regulations apply to thermal performance and other areas such as safety, air supply, means of escape and ventilation.

Electrics : Planning Permission

Planning permission is not generally required for installing or replacing electrical circuits. However, if you live in a listed building you are advised to contact your Local Planning Authority before carrying our any work.

Building Regulations

If you are carrying out electrical work in your home or garden in England and Wales, you will have to follow new rules in the Building Regulations.

You should use an installer who is registered with a competent person scheme to seek approval from a Building Control body. This is true for most work. However, you do not need to tell them about repairs, replacements and maintenance work or extra power points or lighting points or other alterations to existing circuits (except in a kitchen or bathroom, or outdoors).

Disclaimer: this is an introductory guide and is not a definitive source of legal information

© Crown Copyright 2008 www.planningportal.gov.uk

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