What's the Cost of a Kitchen Extension?

At the forefront of our customers’ minds is often the inquiry about the expense involved in a kitchen extension. To offer clarity on this matter, we’ve developed an innovative extension cost estimator. Understanding that extension building costs can fluctuate, particularly in bustling urban centers like London, our tool aims to demystify the financial aspect of your project.


Our intuitive tool streamlines the process, allowing you to discern precisely which extension options are feasible for you while accounting for various cost factors. Additionally, we’ve incorporated 3D models to vividly illustrate how your envisioned extension would seamlessly integrate with your existing home, empowering you to visualize the transformation.

House Type
Select from below options

Detached

Semi-detached

End of terrace

Terraced-Flat Back

Terraced-L Shaped

Extension Type
Select from below options

Rear Extension

Side & Rear Extension

Side Extension

Wraparound Extension

Roof Type
Select from below options

Flat Roof

Crown Roof

Gable Roof

Pitched Roof

Pitched & Flat Roof

Pitched (Hip Roof)

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Crown Roof
3m Rear Extension

Estimated Cost:

£85,000

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Flat Roof
3m Rear Extension

Estimated Cost:

£82,000

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Gable Roof
3m Rear Extension

Estimated Cost:

£83000

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Pitched Roof
3m Rear Extension

Estimated Cost:

£80,000

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Flat Roof
3m x 3m Rear Extension

Estimated Cost:

£67,000

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Pitched Roof
Small Side Return

Estimated Cost:

£67,000

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Flat Roof
Small Side Return

Estimated Cost:

£68,000

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Pitched Roof
Medium Side Return

Estimated Cost:

£68,000

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Flat Roof
Medium Side Return

Estimated Cost:

£69,000

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Pitched Roof
Large Side Return

Estimated Cost:

£78,000

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Flat Roof
Large Side Return

Estimated Cost:

£80,000

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Pitched & Flat Roof
Small Side & Rear Extension

Estimated Cost:

£83,000

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Pitched & Flat Roof
Medium Side & Rear Extension

Estimated Cost:

£95,000

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Pitched & Flat Roof
Large Side & Rear Extension

Estimated Cost:

£112,000

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Pitched (Hip) Roof
Small Wraparound Extension

Estimated Cost:

£85,000

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Flat Roof
Small Wraparound Extension

Estimated Cost:

£87,000

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Gable Roof
Small Wraparound Extension

Estimated Cost:

£86,000

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Pitched (Hip) Roof
Medium Wraparound Extension

Estimated Cost:

£97,000

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Flat Roof
Medium Wraparound Extension

Estimated Cost:

£100,000

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Gable Roof
Medium Wraparound Extension

Estimated Cost:

£97,000

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Pitched (Hip) Roof
Large Wraparound Extension

Estimated Cost:

£112,000

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Flat Roof
Large Wraparound Extension

Estimated Cost:

£118,000

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Gable Roof
Large Wraparound Extension

Estimated Cost:

£112,000

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Crown Roof
Large Wraparound Extension

Estimated Cost:

£220,000

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Flat Roof
Large Wraparound Extension

Estimated Cost:

£210,000

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Crown Roof
Medium Rear Extension

Estimated Cost:

£120,000

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Flat Roof
Medium Rear Extension

Estimated Cost:

£115,000

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Flat Roof
Medium Smaller Rear Extension

Estimated Cost:

£77,000

Contact Us

We're thrilled that you're considering reaching out to us! Whether you have a question or feedback or just want to say hello, we're all ears. Your thoughts and inquiries mean the world to us.