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 £2,320

Last active Nov 26
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Mobile Services

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

Mobile Services provides a local, trusted extension buil...

From £1,952

Last active Nov 26
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Steve Lovett Builders

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

From £2,160

Last active Nov 26
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ROB DINE CONSTRUCTION

ROB DINE CONSTRUCTION is an established and experienced local extension builder in SO18. Please contact us for a free, no obligation quote and comp...

From £2,168

Last active Nov 26
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Andy's Building Services

Trusted and professional extension builder in SO18. Experienced in all extension buildering work and keeping within budget and on quote. Andy's Bui...

From £2,392

Last active Oct 26
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AAConcepts

Arshad Ali

We are a Design and Build company based in Hampshire. Proud of our roots, we try to be the very best in the way we go about our business. Friendly...

From £2,336

Last active Oct 26
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Claytons Building and Roofing

Claytons Building and Roofing are here to help customers who need an Extension Builder in SO18. We offer a competitive rate to complete all your ex...

From £2,376

Last active Oct 26
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CSY Construction Ltd

Experienced extension builder ready to quote for your work. CSY Construction Ltd is the best extension builder in SO18. No obligation free quotes a...

From £2,184

Last active Jul 26
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T & S Construction

Need an Extension Builder in SO18? T & S Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many...

From £2,336

Last active Jul 26
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Artisan Builders

Experienced extension builder ready to quote for your work. Artisan Builders is the best extension builder in SO18. No obligation free quotes and m...

From £1,936

Last active Jun 26
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Property Maintenance Repair

Relax... you have found a reliable extension builder in SO18. Property Maintenance Repair is a friendly and reliable company based in SO18 who cons...

RSJ cost in SO18

Estimates for install an rsj near SO18

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SO18 it ranges from £1,936 (Property Maintenance Repair based in SO50) to £2,392 (AAConcepts based in SO14).

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 SO18 by posting a job with HaMuch and we will send it to extension builders in SO18.


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Estimates for common extension builder jobs in SO18;

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...