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 £2,408

Last active May 26
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A Stanley Building Services

A Stanley Building Services is an established and experienced local extension builder in RG20. Please contact us for a free, no obligation quote an...

From £2,352

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Complete Building Services

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

Complete Building Services provides a local, trusted ext...

From £2,240

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Helyar Project Services Ltd

Need an Extension Builder in RG20? Helyar Project Services Ltd has been helping local clients (20 mile radius) with their extension buildering jobs...

From £2,496

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Fabric First Build Projects Ltd

Fabric First Build Projects Ltd are here to help customers who need an Extension Builder in RG20. We offer a competitive rate to complete all your ...

From £2,232

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Hartwood Oak Buildings Ltd.

Hartwood Oak Buildings Ltd. are here to help customers who need an Extension Builder in RG20. We offer a competitive rate to complete all your exte...

From £2,368

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Total Home Improvements

Relax... you have found a reliable extension builder in RG20. Total Home Improvements is a friendly and reliable company based in RG20 who consider...

RSJ cost in RG20

Estimates for install an rsj near RG20

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in RG20 it ranges from £2,232 (Hartwood Oak Buildings Ltd. based in RG20) to £2,496 (Fabric First Build Projects Ltd based in RG14).

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 RG20 by posting a job with HaMuch and we will send it to extension builders in RG20.


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Estimates for common extension builder jobs in RG20;

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...