Use sustainable materials and save money on your new extension

Timber frame extensions are becoming more and more popular as people understand their thermal properties, cost-effectiveness and general sustainability. Built quicker than masonry frame extensions, they generally cost less and can support a variety of design elements to help you create your dream extension. But how much will a timber frame extension cost in S21? To see prices and availability for your job click Get quotes.

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Build a timber frame extension cost in S21 - Sort by rates or availability

From £25,864

(last active 08/09/26)
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MGG CONSTRUCTION LTD

Trusted and professional extension builder in S21. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONSTRU...

From £25,904

(last active 09/04/26)
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Maison Frais

Looking to Transform Your Home Space?Maison Frais are Space Solution Specialists based in S. Yorkshire. We help TRANSFORM people's family homes to ...

From £25,856

(last active 08/02/26)
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C ROWLEY (SELFBUILD)

C ROWLEY (SELFBUILD) is an established and experienced local extension builder in S21. Please contact us for a free, no obligation quote and compet...

From £26,136

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S. & A. Parsons (Building Contractors) Limited

S. & A. Parsons (Building Contractors) Limited is a trusted extension builder serving customers in S21 and the surrounding area. Contact us to toda...

From £25,912

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Oliver Wild Ltd

Oliver Wild Ltd is an established extension buildering business in S21. We come highly recommended and provide competitive quotes for your work.

From £26,184

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Maison Frais

Trusted and professional extension builder in S21. Experienced in all extension buildering work and keeping within budget and on quote. Maison Frai...

Timber frame extension cost in S21

Estimates for build a timber frame extension near S21

A timber frame extension built in S21 typically ranges from £25,856 (C ROWLEY (SELFBUILD) based in S43) to £26,184 (Maison Frais based in S26), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.

Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.

Get rates and quotes to build a timber frame extension in S21 by posting a job with HaMuch and we'll send it to extension builders in S21.


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Estimates for common extension builder jobs in S21;

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

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