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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A F Beckett

Need an Extension Builder in DN31? A F Beckett has been helping local clients (20 mile radius) with their extension buildering jobs for many years....

From £2,240

Last active Apr 26
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Paul Wallis Building & Joinery Ltd

From building preservation to extensions in Grimsby, we have the skills and experience you need. We undertake a very wide selection of wor...

RSJ cost in DN31

Estimates for install an rsj near DN31

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in DN31 it ranges from £1,976 (A F Beckett based in DN32) to £2,240 (Paul Wallis Building & Joinery Ltd based in DN32).

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 DN31 by posting a job with HaMuch and we will send it to extension builders in DN31.


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Estimates for common extension builder jobs in DN31;

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...