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 £2,224

Rates verified Oct 26
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Ferguson Building Services Limited

Ferguson Building Services Limited is an established and experienced local extension builder in Henfield. Please contact us for a free, no obligati...

From £2,184

Last active Oct 26
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FIRST FORMAT BUILDING

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

FIRST FORMAT BUILDING provides a local, trusted extensio...

From £2,376

Last active Oct 26
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East West Refurbishment Limited

Need an Extension Builder in Henfield? East West Refurbishment Limited has been helping local clients (20 mile radius) with their extension builder...

From £2,192

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H P Building Services Sussex

Member since August 2026

H P Building Services Sussex is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles arou...

From £2,496

Last active Oct 26
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Proper Copper Design

Proper Copper DesignWe are a design lead copper homeware company specializing in contemporary handles, taps, showers and accessories. Our products ...

From £2,216

Last active Sep 26
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Good Construction (Sussex) Limited

Trusted and professional extension builder in Henfield. Experienced in all extension buildering work and keeping within budget and on quote. Good C...

From £2,136

Last active May 26
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ACF Carpentry Ltd

ACF Carpentry Ltd is an established and experienced local extension builder in Henfield. Please contact us for a free, no obligation quote and comp...

From £2,800

Last active Apr 26
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RJ's Carpentry Construction

Reuben Sargent

Rjscarpentryconstruction is a well established company with over 30 years of experience in the carpentry and construction industries

From £2,472

Last active Apr 26
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JBF Building & Roofing Maintenance Ltd

JBF Building & Roofing Maintenance Ltd is an established and experienced local extension builder in Henfield. Please contact us for a free, no obli...

From £2,408

Last active Apr 26
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Aurabuild

Relax... you have found a reliable extension builder in Henfield. Aurabuild is a friendly and reliable company based in Henfield who consider no jo...

RSJ cost in Henfield

Estimates for install an rsj near Henfield

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Henfield it ranges from £2,136 (ACF Carpentry Ltd based in BN15) to £2,800 (RJ's Carpentry Construction based in RH15).

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


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Estimates for common extension builder jobs in Henfield;

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...