Tips on Planning and Designing a Kitchen Extension

Adding a kitchen extension to your home is a great way to update the central hub of your home, making it a place people will love spending time in. It’s also one of the most cost-effective ways of adding value to your house. We take a look at some top tips for kitchen extension ideas, as well as how much kitchen extensions cost.

How Much Does a Kitchen Extension Cost?

One of the most important aspects to consider when planning your kitchen extension is the cost. Not only is it useful to know roughly what the project is going to set you back, but it’s also essential to budget for it ahead of time.

White house exterior with pool and kitchen extension
Photo by Digital Marketing Agency NTWRK on Unsplash

Of course, it’s impossible to say exactly how much your kitchen extension design will end up costing. However, there are some good guidelines on kitchen pricing:

  • Single storey extensions. Will cost around £1,500 per m² 
  • A more individual extension. Includes things like bespoke windows and doors. Will cost from £1,900 to £2,200 per m².  
  • Higher specification extension. With extra details and flourishes. Can cost up to £3,000 per m².
  • Redesigning work. Includes things like reworking an interior layout. Can cost £500 to £900 per m².

Make sure that you allow some extra room in your budget for any unforeseen costs.

Building Regulations for a Kitchen Extension

You’ll also need to bear in mind that, depending on the size and scale of your extension, you may need to get planning permission. This is another key factor when you’re trying to figure out how much kitchen extensions cost.

Regulations for houses with kitchen extension
Photo by Jesse Roberts on Unsplash

Several variables determine what kind of permission you’ll need. However, in general, you can avoid the need for planning permission for your rear kitchen extension if: 

  • A single-storey extension. These can be up to 6m from the original rear wall of an attached house or 8m on a detached property. It can be up to 4m in height unless it’s within 2m of your property’s boundary. In those instances, height is limited to 3m.
  • A double-storey extension. These have to be at the rear and can’t be any taller than the highest part of your existing roof. They also can’t extend beyond your rear wall by more than 3m, and they must match the original structure.

If you want to find out more about whether you need planning permission, you can check planningportal.co.uk for full conditions.

What and Who Do You Need?

It can be a daunting prospect when figuring out how to plan a kitchen extension. There are many different aspects to consider aside from how much the kitchen extension costs. To make the process easier for you, we’ve outlined some of the dos and don’ts of planning a kitchen extension: 

  • Do get detailed plans. Work with professional builders and tradespeople to come up with a cost estimate and detailed plans. Make sure to cover all angles and don’t leave anything to chance. 
  • Do plan for material storage. There will likely be many different building materials that will need storing somewhere on or near your property. Make sure there’s a safe place for them. 
Contractor working on kitchen extension
Photo by Charles Deluvio on Unsplash
  • Don’t micromanage. Once you’ve agreed on a price and timescale with your builders, let them work in the way they’re used to. Each tradesperson has their own way of working, so respect their profession. 
  • Don’t be unclear. If you’re taking on some parts of the project yourself, make sure your builder knows exactly which parts. Sometimes the line between where one job starts and another one ends can blur, so be sure to discuss this in advance.

Timeline of Building a Kitchen Extension

So, how long should your project take? Well, that depends on factors such as the size and scale of the work. You may be planning a rear kitchen extension, a conservatory kitchen extension, or a glass roof kitchen extension, and each would take a different amount of time. 

However, as a general rule, you can expect: 

  • Week 1. Prep.
  • Week 2. Groundwork and Foundations. 
  • Week 3-4. Low-Level and Ground Work.
  • Week 5-6. Internal and External Walls.
  • Week 7. Build Roof Structure.
  • Week 8. Lay Roof Covering.
  • Week 9-10.Guttering, Windows, Doors.
  • Week 11-12. Knock Through and Plastering.
  • Week 13. Final Work.
  • Week 14. Snagging and Garden Work.

Again, there’s always the potential for things to move faster or slower than these estimates, and delays may be possible. 

Photo by Im3rd Media on Unsplash

Kitchen Extension Layouts

Now that we’ve covered some of the basics of the prep, it’s time to provide some inspiration. Below, we’ve picked out seven gorgeous kitchen extension designs to give you some ideas: 

This beautiful open-plan kitchen extension gives a light and airy feel to the room. 

White kitchen with back garden view
Photo by Mark McCammon from Pexels

Those in search of a rear kitchen extension will love this design, which mixes modern and contemporary themes.

Grey kitchen design extension
Photo by Tamil Hari from Pexels

This sleek, modern design gives plenty of space with monochrome stylings.

Kitchen extension with large windows and doors to back garden
Image by Connoman from Pixabay

The gold of the lamps and the leather bar stools accentuate the clean design of this kitchen.

Kitchen extension layout
Image by Ryan Doka from Pixabay

Those looking for small kitchen extension ideas can take inspiration from this design.

Kitchen extension and dining room with skylight

If you’re looking for a kitchen extension with skylights, they don’t come much better than this one.

When it comes to conservatory kitchen extensions, this modern take is absolutely stunning.

Start Planning Your Kitchen Extension Today

You now have all the information on planning your project and how much kitchen extensions cost. Hopefully, you also have plenty of inspiration to get started on your own plans with. Adding a kitchen extension can significantly increase your space and improve your life. So contact us today and let us build the kitchen of your dreams!

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