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 £1,976

Last active Oct 26
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Benton Builders

Benton Builders is an established and experienced local extension builder in Shirley. Please contact us for a free, no obligation quote and competi...

From £1,800

Last active Oct 26
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D Broomhall

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

D Broomhall provides a local, trusted extension builderi...

From £2,080

Last active Oct 26
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Tucker Construction

Relax... you have found a reliable extension builder in Shirley. Tucker Construction is a friendly and reliable company based in Shirley who consid...

From £2,160

Last active Oct 26
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SM&S General Property Repairs

SM&S General Property Repairs is a trusted extension builder serving customers in Shirley and the surrounding area. Contact us to today to get a co...

From £2,144

Last active Oct 26
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Wilson & Son

Wilson & Son is an established and experienced local extension builder in Shirley. Please contact us for a free, no obligation quote and competitiv...

From £2,000

Last active Oct 26
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Michael Locke Garage Doors

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

Michael Locke Garage Doors provides a local, trusted ext...

From £1,928

Last active Oct 26
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D & S Decorating & Building Services Ltd

Trusted and professional extension builder in Shirley. Experienced in all extension buildering work and keeping within budget and on quote. D & S D...

From £1,944

Last active Oct 26
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Platinum Build

Relax... you have found a reliable extension builder in Shirley. Platinum Build is a friendly and reliable company based in Shirley who consider no...

From £2,024

Last active Oct 26
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G Wilson Building & Roofing Services

Gary Wilson

Reliable person 25 years experience 

if you look on a website rated people and have a look at my ratings 

From £2,144

Last active Oct 26
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CREATION BUILDING SERVICES

Andrew Bouton

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

RSJ cost in Shirley

Estimates for install an rsj near Shirley

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Shirley it ranges from £1,800 (D Broomhall based in B45) to £2,160 (SM&S General Property Repairs based in B38).

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

"RSJ installation" - B90, job posted 03/08/26

"Total cost of structural engineer report, supply and install 6M RSJ for a load bearing wall to make kitchen/diner." - B90, job posted 01/11/25


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Estimates for common extension builder jobs in Shirley;

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...