Planning a Kitchen Extension

In most cases, a single storey extension can be built as a permitted development, meaning that you will not require planning permission for this build. However, some clients cannot make use of these developments – for example, if you live in a conservation area or if your home is listed. There are also some limitations placed on the size of your kitchen extension and proximity to roads and properties nearby.

Glazed Kitchen Extensions

Many clients prefer to make the most of the available light by building glazed extensions, or even orangeries or conservatories as part of the space. Orangeries typically have a flat, solid roof and provide a modern way to create an open plan kitchen with plenty of light.

Designing the Extension

We work with trusted architectural partners to create the designs for your kitchen extension – as part of the design process, we will ask you about your preferences and look at the design of your home to create an extension that works with the existing aesthetic.

Planning Permission

Depending on your area, you may be able to build your extension as a permitted development. If you choose this route, there will be restrictions on the size, positioning, and style of kitchen extension. If you build as a permitted development, your kitchen extension must:

  • Not be more than half the area of land around the original house
  • Not be higher than the highest part of the roof
  • Not extend beyond the rear wall of the original house by more than 3 metres if it is an attached house, or 4 meters if it is a detached house
  • Not be higher than 4 meters if it is a single storey extension
  • Be built with materials that are similar in appearance to the rest of the house
  • Not include raised platforms

However, many clients prefer to gain planning permission to give them greater flexibility with their design. If you choose this route, our architectural partners can submit the application on your behalf.


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Case Studies

Loft Conversions Add a Fifth to Property Values

Loft conversions are one of the best ways to make your home more spacious – an intelligently-designed conversion can add as much as 30% more living space to your home without extending the footprint of your house. As with all home improvements, conversions also increase the value and sale-ability of your home. A study by […]

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The client wanted to make extensive improvements to her home in Wandsworth, including a loft conversion, a kitchen extension, and alterations to her existing lounge and one of the existing bedrooms. All of the work took around 12 weeks and they were extremely happy with the results.  


Avian Construction Ltd

Peterden House
1A Leighton Rd
West Ealing
W13 9EL

020 3174 1241