Find builders to lay your concrete foundations in S21 from £6,106

Concrete foundations keep your extension, conservatory or other new building stable for years to come. It's important to hire qualified extension builders to lay your foundations, but how much will it cost in S21? To see prices and availability for your job click Get quotes.

HaMuch is Excellent

Concrete foundations cost in S21 - Sort by rates or availability

From £6,114

(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 £6,154

(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 £6,106

(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 £6,386

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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 £6,162

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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 £6,434

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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...

Concrete foundation costs in S21

Estimates for concrete foundations near S21

Concrete foundations range from the £6,106 (C ROWLEY (SELFBUILD) based in S43) to £6,434 (Maison Frais based in S26) in S21.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.

Find out the exact cost of laying concrete foundations in S21 by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.


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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.

More extensions & conversions cost guides...