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 Warwickshire. Please contact us for a free, no obligation quote and co...

From £2,080

Last active Oct 26
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Tucker Construction

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

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 Warwickshire and the surrounding area. Contact us to today to get...

From £2,144

Last active Oct 26
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Wilson & Son

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

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...

From £2,144

Last active Oct 26
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Avonvale Garage Doors

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

Avonvale Garage Doors provides a local, trusted extensio...

From £2,264

Last active Sep 26
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MYBUILD

Ben Birch

I have been in the building industry for 28 years and have carried out extensions,loft conversions, knock throughs, plastering, carpentry,roofing a...

From £1,928

Last active Sep 26
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F.I.I Building Services Ltd

Relax... you have found a reliable extension builder in Warwickshire. F.I.I Building Services Ltd is a friendly and reliable company based in Warwi...

From £2,520

Last active Aug 26
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Inside & Out Property Refurbishments

Wayne Hay

Inside & Out property refurbishments Interior Design & Build service Grade1 Grade11 listed buildings complete renovation preservation conservati...

From £1,760

Last active Jul 26
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Cubit Contracts

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

Cubit Contracts provides a local, trusted extension buil...

RSJ cost in Warwickshire

Estimates for install an rsj near Warwickshire

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Warwickshire it ranges from £1,760 (Cubit Contracts based in B98) to £2,520 (Inside & Out Property Refurbishments based in B98).

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

"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

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


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Estimates for common extension builder jobs in Warwickshire;

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...