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 £5,352

Last active Oct 26
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Essex loft extensions Ltd

Colin

We are small building company working for the residential and domestic properties? We work on all types of buildings creating Loft conversion and H...

From £2,112

Last active May 26
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J G BUILDING SERVICES

J G BUILDING SERVICES is a trusted extension builder serving customers in CM20 and the surrounding area. Contact us to today to get a competitive q...

From £2,368

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Mmaes Limited

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

From £2,608

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Prestige Construction & Building Services Limited

Prestige Construction & Building Services Ltd is a family-run business with over 30 years industry experience. We offer a Design and Build service ...

From £2,224

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Loft in Space London

Need an Extension Builder in CM20? Loft in Space London has been helping local clients (20 mile radius) with their extension buildering jobs for ma...

From £2,328

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THE ROMAN BUILDING COMPANY

Trusted and professional extension builder in CM20. Experienced in all extension buildering work and keeping within budget and on quote. THE ROMAN ...

From £2,280

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VIBE CONSTRUCTION LIMITED

VIBE CONSTRUCTION LIMITED is an established extension buildering business in CM20. We come highly recommended and provide competitive quotes for yo...

From £2,200

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Added Space Ltd

Our building services company Added Space Ltd have over fifty years combined experience. We have been helping customers in Harlow and the surroundi...

From £2,040

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Urban lofts and extensions ltd

Urban lofts and extensions ltd is an established extension buildering business in CM20. We come highly recommended and provide competitive quotes f...

From £2,368

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Welstrong Construction

Welstrong Construction is a team of friends and brothers who enjoy working in the building industry and aim to make sure every customer is fully sa...

RSJ cost in CM20

Estimates for install an rsj near CM20

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CM20 it ranges from £2,040 (Urban lofts and extensions ltd based in cm20) to £5,352 (Essex loft extensions Ltd based in CM20).

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 CM20 by posting a job with HaMuch and we will send it to extension builders in CM20.


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Estimates for common extension builder jobs in CM20;

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...