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 £2,232

Last active Oct 26
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Shercoriana London Ltd

David Oreilly

We are a family run business we 40 years experience delivering multiple projects from new developments . Extension. Loft conversion. Including foun...

From £2,528

Last active Sep 26
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J Stevens Roofing & Guttering

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

From £2,472

Last active Sep 26
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DPP Construction (David Price Partnership)

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

DPP Construction (David Price Partnership) provides a lo...

From £2,168

Last active Sep 26
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D B Jones Builder

Trusted and professional extension builder in Reigate And Banstead. Experienced in all extension buildering work and keeping within budget and on q...

From £1,992

Last active Sep 26
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REIGATE MARBLE SHOP

ALBANA PERANA

The Reigate Marble Shop LTD.

Established in 2005, The Reigate Marble Shop...

From £2,352

Last active Sep 26
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Clarkes General Builders

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

From £2,424

Last active Sep 26
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S C H BUILDING SERVICES

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

S C H BUILDING SERVICES provides a local, trusted extens...

From £2,064

Last active Jun 26
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Crawley Construction Ltd

Crawley Construction Ltd

Contact us: 07454160840 Email: enquiries@ We are a family run business since 15 year’s+. We are build on tru...

From £2,080

Last active May 26
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J S Nisbet Loft Conversions

J S Nisbet Loft Conversions are here to help customers who need an Extension Builder in Reigate And Banstead. We offer a competitive rate to comple...

From £2,552

Last active May 26
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The Original Roofing Company

The Original Roofing Company are here to help customers who need an Extension Builder in Reigate And Banstead. We offer a competitive rate to compl...

RSJ cost in Reigate And Banstead

Estimates for install an rsj near Reigate And Banstead

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Reigate And Banstead it ranges from £1,992 (REIGATE MARBLE SHOP based in RH2) to £2,552 (The Original Roofing Company based in CR8).

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

"RSJ installation also I will need help with the cost of theses below IRS extension either the following measurements. L-3m w-3.5m H-Item Site Preparation Groundworks & Foundations Floor Construction Superstructure Roof Construction Windows and External Doors Internal Works Electrical ..." - CR3, job posted 11/08/25


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Redhill£41£269
Install An RSJ near Reigate£40£270
Install An RSJ near Reigate & Banstead£41£271
Install An RSJ near Caterham£43£271
Install An RSJ near Horley£38£258
Install An RSJ near Tadworth£41£271
Install An RSJ near Epsom£44£275
Install An RSJ near Crawley£38£255
Install An RSJ near Ewell£44£275
Install An RSJ near Sutton£43£274

Estimates for common extension builder jobs in Reigate And Banstead;

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...