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 Get quotes.

HaMuch is Excellent

Install an RSJ cost in Wimbledon - Sort by rates or availability

From £2,376

(rates verified 05/10/26)
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Self employed

Hamza Elezi

Hight quality of jobs

From £2,248

(rates verified 18/09/26)
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J&J Building Solutions

Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Wimbledon. No obligation free q...

From £2,704

(last active 10/10/26)
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CSJ Building Services

Trusted and professional extension builder in Wimbledon. Experienced in all extension buildering work and keeping within budget and on quote. CSJ B...

From £2,408

(last active 22/09/26)
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Building Vision London Ltd

Building Vision London Ltd is a trusted extension builder serving customers in Wimbledon and the surrounding area. Contact us to today to get a com...

From £2,360

(last active 17/09/26)
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AVIB City Construction Ltd

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

From £2,336

(last active 17/09/26)
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KEVIN GEAR BUILDING & MAINTIAN

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

From £2,272

(last active 17/09/26)
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Sonik Building Services

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

From £2,520

(last active 17/09/26)
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Renaissance Timothy Brewer Ltd

Renaissance Timothy Brewer Ltd is an established extension buildering business in Wimbledon. We come highly recommended and provide competitive quo...

From £2,536

(last active 17/09/26)
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PRM BUILDING

Relax... you have found a reliable extension builder in Wimbledon. PRM BUILDING is a friendly and reliable company based in Wimbledon who consider ...

From £2,520

(last active 17/09/26)
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QSA Builders Ltd

QSA Builders Ltd are here to help customers who need an Extension Builder in Wimbledon. We offer a competitive rate to complete all your extension ...

RSJ cost in Wimbledon

Estimates for install an rsj near Wimbledon

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Wimbledon it ranges from £2,248 (J&J Building Solutions based in SW16) to £2,704 (CSJ Building Services based in SM1).

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 Wimbledon by posting a job with HaMuch and we will send it to extension builders in Wimbledon.


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Estimates for common extension builder jobs in Wimbledon;

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...