Do I need planning permission for my glass extension?
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Do I need planning permission for my glass extension?

Please note: Information provided in is this blog is correct at the time of writing.

When looking to install a stunning Solarlux product, one of the top questions asked is whether planning permission is required.

Adding a single storey glass extension (glass canopy, glass house or wintergarden) to your house could be classed as a ‘permitted development’. The installation is subject to a list of limits and conditions as defined on the Planning Portal.

These limits and conditions for single storey extensions include and not limited to:

  • The glass extension cannot take up more than half the area of land around the “original house*”
  • The glass extension cannot be higher than the highest part of the roof or higher at the eaves than the existing eaves
  • The glass side extension cannot be more than 4 metres in height and only up to half the width of the “original house*”
  • The materials used for the glass extension must be similar in appearance to the existing home
  • The glass extension must not extend beyond the rear wall of the “original house*” by more than:
    • 4 metres for a detached house
    • 3 metres for any other house

*Original house = the house as it was first built (or as it stood) on 1 July 1948 (if it was built before that date.

Please refer to the Planning Portal for the full list of the limits and conditions for a glazed extension.

If you want to exceed the limits of the ‘permitted development’, planning an extension at the front of your property or are in an Article 2(3) designated land^ then it is recommended that you always seek planning permission advice.

^ Article 2(3) designated land - this is defined as land within:

  • a conservation area; or
  • an area of outstanding natural beauty; or
  • an area specified by the Secretary of State for the purposes of enhancement and protection of the natural beauty and amenity of the countryside; or
  • the Broads; or
  • a National Park; or
  • a World Heritage Site.

Please note, the rules apply to the new proposed structure and any other previous extensions to the original build and apply to houses only and not to flats and maisonettes. For flats and maisonettes, click here.

Solarlux Akzent Plus wintergarden
Bespoke premium products from Solarlux

For over 35 years, Solarlux has built a reputation for precision-engineered products. Every detail of premium bespoke products are expertly crafted to your specification and taste to ensure you get the perfect product to suit the architecture of your home

Interested in a glazed extension but not sure if you want a glass house/canopy or wintergarden? Take a look at our blog 'The difference between a glass house/canopy and a wintergarden glazed extension'.

Know which type of structure you want? Then contact us now.

Solarlux Akzent Plus wintergarden