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. 

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Install an RSJ cost in CM20

Added Space Ltd

From £2,200

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

Essex loft extensions Ltd

From £5,352

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

Urban lofts and extensions ltd

From £2,040

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

Mmaes Limited

From £2,368

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

Welstrong Construction

From £2,368

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...

Enko Building Services LTD

From £2,256

With over 20 years of experience we specialise in fit-outs and maximising your living space. Lofts, extensions, basements, new builds and domestic ...

J G BUILDING SERVICES

From £2,112

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...

VIBE CONSTRUCTION LIMITED

From £2,280

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

PS Brick, Block & Home Improvement LTD

From £2,552

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

Loft in Space London

From £2,224

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...

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...