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 DE21 - Sort by rates or availability

From £2,312

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J Pearson Building

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

J Pearson Building provides a local, trusted extension b...

From £1,952

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Fitted Solutions Ltd

Fitted Solutions was established in 2006 by founder Sam Fisher; with a promise to deliver exceptional craftmanship combined with first class custom...

From £2,104

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Fearn Property

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

From £2,064

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Refresh Renovations Derbyshire

Nestled in the rolling hillside of the West Midlands, Derby is a city birthed by the Roman Empire, and grown in the industrial revolution. Initiall...

From £1,944

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The Blackbrook Group

The Blackbrook Group offers a one-stop shop for your construction project. We offer support from concept through to completion. We start with an in...

RSJ cost in DE21

Estimates for install an rsj near DE21

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in DE21 it ranges from £1,944 (The Blackbrook Group based in DE22) to £2,312 (J Pearson Building based in DE24).

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 DE21 by posting a job with HaMuch and we will send it to extension builders in DE21.

"RSJ installation" - DERBY, job posted 07/11/25

"RSJ installation Remove wall between kitchen and utility. Fit 3.4m steel beam Obtain Building Control approval and aign off" - DE3, job posted 01/01/70


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Derby£29£227
Install An RSJ near Erewash£31£234
Install An RSJ near Ilkeston£31£236
Install An RSJ near Amber Valley£32£244
Install An RSJ near Belper£32£244
Install An RSJ near Heanor£31£236
Install An RSJ near Long Eaton£32£249
Install An RSJ near Ripley£32£246
Install An RSJ near Broxtowe£34£240
Install An RSJ near Nottingham£34£241

Estimates for common extension builder jobs in DE21;

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...