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Kitchen garden room extensions: how to create your own

5 min read
Oct '25 • by Heather

Quick summary

To create your own kitchen garden room extension, budget from about £25,000 to £80,000 depending on size, design, and materials, with costs influenced by glazing and complexity. Construction typically takes 8-12 months, but prefab models can be quicker. Keep in mind, planning permission may not be needed if you follow permitted development rules, but some restrictions apply for flats, listed buildings, and conservation areas.

Typically built with a solid roof, garden rooms differ in style from an orangery or conservatory kitchen extension. However, they still possess the airy, spacious, one-with-nature feel synonymous with their counterparts.

They’re the perfect way to take outdoor living to the next level, whether you desire to impress your friends at the next summer party or just want a space where you can enjoy family dinners while being close to nature.

What is a garden room?

A garden room is basically an insulated building ‌in your garden, which is separate from your primary residence.

Unlike a shed, it’s a luxurious, multi-functional room built with the best materials and made to provide all year use.

It makes a beautiful addition to your home and can be designed and furnished in numerous ways, depending on what you intend to use it for.

What is a garden room used for?

There really is no limit to what you can use your garden room for. A garden room offers you solitude from the stress and distractions of home life and can be used for several purposes.

If you’re self-employed or work from home, you could turn your garden room into a home office.

How much does an architect charge?