Convert your basement in TW4 from £36,690

Range from the cheapest Convert a basement £36,690 (LA PIETRA CONSTRUCTIONS based in TW3) to the dearest Convert a basement £42,360 (ZNS Construction based in TW14). To see prices and availability for your job click green button.

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From £40,290

Last active Oct 26
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Slick Construction Ltd

Need to find an Extension Builder near you for all your extension buildering work?

Slick Construction Ltd provides a local, trusted extensi...

From £39,210

Last active Oct 26
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Hawaii Ltd

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £40,020

Last active Oct 26
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Image Design & Consultants

Image Design & Consultants is a trusted extension builder serving customers in TW4 and the surrounding area. Contact us to today to get a competiti...

From £41,640

Last active Sep 26
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BUILDING SPACE UK LTD

Relax... you have found a reliable extension builder in TW4. BUILDING SPACE UK LTD is a friendly and reliable company based in TW4 who consider no ...

From £42,360

Last active Sep 26
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ZNS Construction

Need an Extension Builder in TW4? ZNS Construction has been helping local clients (10 mile radius) with their extension buildering jobs for many ye...

From £41,550

Last active Sep 26
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JP CONSTRUCTION

JP CONSTRUCTION is an established extension buildering business in TW4. We come highly recommended and provide competitive quotes for your work.

From £38,850

Last active Aug 26
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Complex Renovation

Complex Renovation serving clients in London and surrounding areas providing highest standard building services.We provide a range of expert renov...

From £39,120

Last active Aug 26
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BK Verma

BK Verma is a trusted extension builder serving customers in TW4 and the surrounding area. Contact us to today to get a competitive quote for exten...

From £37,050

Last active Aug 26
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AMBUILD LTD

Need to find an Extension Builder near you for all your extension buildering work?

AMBUILD LTD provides a local, trusted extension builderi...

From £36,690

Last active Aug 26
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LA PIETRA CONSTRUCTIONS

LA PIETRA CONSTRUCTIONS is a trusted extension builder serving customers in TW4 and the surrounding area. Contact us to today to get a competitive ...

Cheapest builders to convert your basement in TW4

Estimates for convert a basement near TW4

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

What to do - Get rates and quotes for the cost to convert a basement in TW4 by posting a job with HaMuch and we will send it to  extension builders in TW4.

"Basement conversion" - TW2, job posted 05/04/26


Estimates for common extension builder jobs in TW4;

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...