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 £2,384

Rates verified Oct 26
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Buildmac Ltd

Chris Czerwinski

About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...

From £2,480

Last active Oct 26
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ABC Associates STRUCTURES 4 U

Relax... you have found a reliable extension builder in High Wycombe. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Hig...

From £2,288

Last active Oct 26
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B.A Ruffle Building Contractor

B.A Ruffle Building Contractor is an established extension buildering business in High Wycombe. We come highly recommended and provide competitive ...

From £2,296

Last active Jul 26
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Building High Wycombe

Relax... you have found a reliable extension builder in High Wycombe. Building High Wycombe is a friendly and reliable company based in High Wycomb...

From £2,240

Last active Jul 26
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Mitchell & Co Building & Renovations Ltd

Mitchell & Co Building & Renovations Ltd is an established extension buildering business in High Wycombe. We come highly recommended and provide co...

From £2,592

Last active Jul 26
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jesson ladscaping and construction

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

From £2,544

Last active Jul 26
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Be Illuminated

Be Illuminated are here to help customers who need an Extension Builder in High Wycombe. We offer a competitive rate to complete all your extension...

From £2,568

Last active Jul 26
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Steve Knight Construction

Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...

From £2,232

Last active Jul 26
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GREENWORKS CONSTRUCTION

GREENWORKS CONSTRUCTION is an established and experienced local extension builder in High Wycombe. Please contact us for a free, no obligation quot...

From £2,408

Last active Jul 26
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JAYEM BUILDING SERVICES LTD

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

JAYEM BUILDING SERVICES LTD provides a local, trusted ex...

RSJ cost in High Wycombe

Estimates for install an rsj near High Wycombe

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in High Wycombe it ranges from £2,232 (GREENWORKS CONSTRUCTION based in SL7) to £2,592 (Jesson ladscaping and construction based in hp15).

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


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Estimates for common extension builder jobs in High Wycombe;

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...