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

Rates verified Oct 26
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SDS Constructions

Sean Smithers

Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...

From £3,432

Rates verified Oct 26
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Optimus Build Solutions

Vasile Boghean

Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...

From £2,080

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Can design and Construction

Erald Kanani

Member since August 2025

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

From £2,440

Last active Nov 26
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PHOENIX DEVELOPMNTS LONDON LTD

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

From £2,912

Last active Nov 26
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Render

Experienced extension builder ready to quote for your work. Render is the best extension builder in Becontree Heath. No obligation free quotes and ...

From £2,528

Last active Nov 26
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Tony Rutter

Need an Extension Builder in Becontree Heath? Tony Rutter has been helping local clients (10 mile radius) with their extension buildering jobs for ...

From £2,600

Last active Nov 26
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Decorating Building Service

Decorating Building Service are here to help customers who need an Extension Builder in Becontree Heath. We offer a competitive rate to complete al...

From £2,368

Last active Nov 26
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Sevcan Construction

Relax... you have found a reliable extension builder in Becontree Heath. Sevcan Construction is a friendly and reliable company based in Becontree ...

From £2,472

Last active Nov 26
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Kunshi Services UK Ltd

Kunshi Services UK Ltd is a trusted extension builder serving customers in Becontree Heath and the surrounding area. Contact us to today to get a c...

From £1,616

Last active Oct 26
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RTC Plumbers

Shaik Jamal

Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...

RSJ cost in Becontree Heath

Estimates for install an rsj near Becontree Heath

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Becontree Heath it ranges from £1,616 (RTC Plumbers based in RM6) to £3,432 (Optimus Build Solutions based in Rm1).

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


Estimates for common extension builder jobs in Becontree Heath;

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...