Find a builder to make your building structurally sound

RSJs support your new extension or other construction to ensure that your property is structurally sound. They are crucial parts of your building work that mustn't be ignored, and must be installed by a professional.  To see prices and availability for your job click green button.

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From £2,608

Last active Nov 26
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Brick House Builders Ltd

Jatinder Kahlon

Hi, I’m Jatinder. I’m a qualified electrician and gas safe registered professional with 10 years of experience in the trade. We specialise in l...

From £2,448

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 £2,616

Last active Oct 26
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TFC Construction

Trusted and professional extension builder in Twickenham. Experienced in all extension buildering work and keeping within budget and on quote. TFC ...

From £2,352

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 £2,096

Last active Oct 26
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Tota Builders

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

From £2,392

Last active Oct 26
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AG-Renovation Ltd

AG-Renovation Ltd is a trusted extension builder serving customers in Twickenham and the surrounding area. Contact us to today to get a competitive...

From £2,104

Last active Sep 26
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Elite Construction London Ltd

Elite Construction London Ltd

Elite Construction London Ltd has been one of the top providers of building and remodeling services in London for more than ten years.Our goal is ...

From £2,568

Last active Sep 26
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BUILDING SPACE UK LTD

Relax... you have found a reliable extension builder in Twickenham. BUILDING SPACE UK LTD is a friendly and reliable company based in Twickenham wh...

From £2,616

Last active Sep 26
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Andy Harris Construction

Andy Harris

Andy Harris Construction is an established and experienced local extension builder in Twickenham. Please contact us for a free, no obligation quote...

From £2,592

Last active Sep 26
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BUILDING ANGELS LTD

BUILDING ANGELS LTD is an established extension buildering business in Twickenham. We come highly recommended and provide competitive quotes for yo...

RSJ cost in Twickenham

Estimates for install an rsj near Twickenham

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Twickenham it ranges from £2,096 (Tota Builders based in TW2) to £2,616 (TFC Construction based in TW10).

Comparing extension builders estimates for fitting an RSJ 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 install an RSJ in Twickenham by posting a job with HaMuch and we will send it to extension builders in Twickenham.


Estimates for common extension builder jobs in Twickenham;

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...