Everything You Need To Know About Planning Permission And Building Regulations For Your Extension.

For many people when planning an extension, planning permission and building regulations can be an unwanted concern. When you choose Whalley Home Improvements this headache is removed, leaving you free to think about the exciting parts of your build. Whalley Home Improvements are extremely knowledgeable about the planning and building regulations process and will take care of the research and application.

Will Is The Difference Between Planning Permission and Building Regulations?

Planning permission and building regulations are often confused. Both are the responsibility of the Local Authority and basically Planning permission takes into consideration the aesthetic effect of a new building/extension on the surrounding homes and neighbourhood, whilst building regulations define how the structure must be constructed in terms of thermal efficiency etc.

Do I Need Planning Permission?

Whalley Home Improvements will take care of this for you, but for your information, here is a summary of the basic facts. Under new regulations that came into effect from 1 October 2008 adding a conservatory to your home is considered to be permitted development, i.e. 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 meters for an attached house and four meters for a detached house.
  • Maximum height of a single-storey rear extension of four meters.
  • Maximum depth of a rear extension of more than one storey of three meters including ground floor.
  • Maximum eaves height of an extension within two meters of the boundary of three meters.
  • Maximum eaves and ridge height of extension no higher than existing house.
  • Side extensions to be single storey with maximum height of four meters 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. You may also need to check if your house is a ‘new build’ as developers sometimes place restrictions on them. Visit the Planning Portal – The Planning Portal is the UK Government’s online planning and building regulations resource for England and Wales.

Will My Conservatory Need To Satisfy 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:

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

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. We suggest that you contact Whalley Home Improvements or your local authority. Alternatively click here to visit the Planning Portal – The Planning Portal is the UK Government’s online planning and building regulations resource for England and Wales.

Request a Brochure
Start Your Quote
Explore in VR
Request a Brochure
Start Your Quote