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Kitchen extension ideas – guest post by Phil Spencer

Kitchen extensions are a really good way to improve your home and add value. During the 80s and 90s the trend was to create as many rooms as possible, people wanted separate dining and utility rooms, whereas now there’s a preference for open-plan.

Many potential buyers with young families want this room to be the heart of the home and kitchens really do sell houses. Therefore, if you’re looking to add value to your home with a limited budget, focusing your money and efforts on creating a family kitchen/ living space is usually the best option.

open plan kitchen diner in white

Source: Alvhemmakleri

There are a number of different options and considerations when extending your kitchen, depending on the type of property you own, how you want to use the space and of course, budget.

Single storey extension

Single-storey extensions at the back of a house are increasingly popular, with full length sliding doors that draw a lot of light into the space. You can now buy off-the-shelve bi-folding doors which have made this type of extension a lot more affordable than it once was. This sort of extension is a relatively simple building project and costs in the range of £10,000 – £15,000.

In most cases single-storey extensions are classed as permitted development, meaning you don’t need to obtain planning permission. If you live in a conservation area or your property is listed, however, you will require it. To be on the safe side I advise checking with your local planning authority before you commence any work, there are some limitations regarding the size of an extension and its proximity to roads and properties surrounding it.

open plan kitchen with sliding glass doors

Source: Pinterest

Many people are choosing to knock through and combine their kitchen and a reception room to create an open plan living space. Done well this is the ideal solution for most families. With the lack of walls it’s important to zone the areas into cooking, dining and relaxing. This can be done by dividing the space with furniture, open book shelves can help divide a room but keep the open feel. Colour is a more subtle way to zone a space, but done well it’s really effective, especially in a small space.

open plan kitchen colour zoning

Source: G Blog

Conservatory extension vs. orangery

Orangeries and conservatories are often cheaper to build than single-storey extension and are a really good way to increase the living space in a kitchen area. The main difference between an orangery and a conservatory is the brickwork. Orangeries typically have a flat solid roof or flat glazing and solid brick walls, while conservatories are often entirely glazed. Orangeries were popular in the 17th century for people to grow citrus fruits, now they’re a modern solution to open plan living that with their solid walls are suited to installing kitchen appliances.

It’s important to get the proportions of the build right, especially the design of the roof, to make sure the extension fits with the original building.

Extension roof

The roof of an extension is the area that requires the most attention to tie the extension in with the original building. There are a couple of options:

  1.  a modern box-style extension with a flat roof, which can include sky lights
  2. an orangery style glass roof, with solid walls
  3. a conservatory glazed roof
  4. a parapet roof (a pitched roof concealing a flat roof), to give the appearance of a pitched roof and appear sympathetic to the original building.

The roof of an extension is the aspect of the build that is most affected by the constraints of permitted development. The height of the ridge of the roof and its impact on first floor windows should be considered and in many cases this is why people opt for a flat roof design.

Whether you want to create a modern box-like extension or a space that blends seamlessly into the original structure, extending the rear of your property is an easy way to generate extra living space and add value to your home. It’s not just about re-sale value, a well designed open plan style kitchen will change how you live in your home and that’s priceless.



Get connected with extension specialists near you by posting a job for free.  Up to 3 local builders will get in touch and provide quotes for your kitchen extension.

Phil Spencer

Phil Spencer doesn’t need much of an introduction, he’s TV’s most well-known property presenter, having co-presented Location, Location, Location and Relocation, Relocation for over 10 years. Phil'ls blog posts focus on adding value and advice/ tips for when you're buying or selling your house.

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    1. Hi Naheem,

      Post your job on our main site, Rated People. Up to three tradesmen will get in touch to give you a quote and you’ll be able to browse their profile pages to read previous customer reviews. If you’re just looking for costs and you’re not ready to undertake the job immediately, please let the tradesmen know when you’re posting the job.

      Kind regards,

  1. Nice pics. I am looking to build an extension kitchen also, but cant seem to find affordable architects who can come out and give ideas, etc. I am based in Enfield, North London.
    Any ideas or recommendations?

  2. Am looking to have an extension built for a kitchen. I cant seem to find any affordable decent architects to come out and take a look. I am based in Enfield, North London. You know anyone?
    Please help.

  3. I would like to knock down a bedroom to make bigger open plan kitchen dinning and lounge area. Will I loose a bedroom value. I have loft conversion as a bedroom with shower. At the moment I have 31/2 bedrooms. I live maisonette flat.

  4. Phil
    We have been trying unsuccessfully to find a builder for our single storey extension 9mtrs x 4mtrs( our budget is £60k (vat inc) based on your figures why are we struggling with quotes ranging from £60k + vat and an orangey at £87k basic shell, between builders and conservatries people we have seen over 15 different companies!
    Can you help us achieve our dream, we live in the Winchester area in Hampshire

    1. We are being told something similar; to remove a small conservatory and replace with a utility room and a garden room – £50-75K!

  5. Hello, I am planning to revamp my kitchen and give it a contemporary look. Now the problem is I don’t have much space. Also can you help me what could be done for House Extension in London? Lovely images, will try and add few things if possible.

  6. I am thinking of adding a single storey side extension to my kitchen. Will I need planning permission. Should I get a architect to do me some plans or should I just contact a reliable builder

  7. Any extension or conservatory which has a lot of windows or natural light is fantastic and looks really modern and open. I just had a rooflight put in my kitchen and I love how light it makes the house feel!

  8. Great advice here! Particularly agree with the importance of the roof. Style-wise, I’m a particular fan of the more modern flat roof, and sky lights are a gorgeous inclusion.

  9. Everyone has a dream to have a contemporary aesthetic home to achieve this people want to add luxury to living space. Glass showers, mirrors and windows are able to complete all the requirement of modern home and architecture.

  10. I really like the details and smallest things you have mentioned. Some of these ideas already have me thinking of what my next home extension projects will be like. Thank you so much for sharing this remarkable source of inspiration.

  11. I really like your post it is more useful to me. Kitchen extension improves as well as add value to a home because this is the heart of any house.

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