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 CH4 - Sort by rates or availability

From £2,256

(last active 22/09/26)
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AJ Solutions

AJ Solutions is an established extension buildering business in CH4. We come highly recommended and provide competitive quotes for your work.

From £1,896

(last active 11/09/26)
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G P Roofing & Building Service

Gary Parkinson

G P Roofing & Building Service is a trusted extension builder serving customers in CH4 and the surrounding area. Contact us to today to get a compe...

From £1,816

(last active 28/02/26)
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ABBOTT BUILDING LTD

Need an Extension Builder in CH4? ABBOTT BUILDING LTD has been helping local clients (20 mile radius) with their extension buildering jobs for many...

From £1,800

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Zibi Home & Garden Services

Zbigniew Grzeszczyk

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

Zibi Home & Garden Services provides a local, trusted ex...

From £2,104

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Klw consultancy

Klw consultancy is an established and experienced local extension builder in CH4. Please contact us for a free, no obligation quote and competitive...

From £2,088

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Urban Construction

Urban Construction is a trusted extension builder serving customers in CH4 and the surrounding area. Contact us to today to get a competitive quote...

From £2,024

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P M Harris Roofing and Joinery Services

P M Harris Roofing and Joinery Services is an established extension buildering business in CH4. We come highly recommended and provide competitive ...

RSJ cost in CH4

Estimates for install an rsj near CH4

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CH4 it ranges from £1,800 (Zibi Home & Garden Services based in CH2) to £2,256 (AJ Solutions based in CH1).

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 CH4 by posting a job with HaMuch and we will send it to extension builders in CH4.


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Estimates for common extension builder jobs in CH4;

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...