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 £2,080

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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 £2,912

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 East Ham. No obligation free quotes and many ha...

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 East Ham and the surrounding area. Contact us to today to get a competit...

From £2,376

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Fedora and sons Ltd

MIHAI Martolea

Member since September 2026

Fedora and sons Ltd is a trusted extension builder serving customers in East Ham and the surrounding area. Contact us to today to get a competitive...

From £2,384

Last active Nov 26
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CC&D BUILDING LTD

Catalin CIOBANU

Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in East Ham. No obligation free quotes ...

From £2,368

Last active Oct 26
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M Saleem Builders

Relax... you have found a reliable extension builder in East Ham. M Saleem Builders is a friendly and reliable company based in East Ham who consid...

From £2,296

Last active Oct 26
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KS Plastering SERVICE

Sampson Essien

Thistle Bonding Coat: Ideal for use on low-suction backgrounds such as brick or concrete blocks, this product provided a solid foundation, Thi...

From £2,408

Last active Oct 26
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GNB Construction Builders Ltd

Trusted and professional extension builder in East Ham. Experienced in all extension buildering work and keeping within budget and on quote. GNB Co...

From £2,120

Last active Oct 26
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G HAMID CONSTRUCTION LTD

Relax... you have found a reliable extension builder in East Ham. G HAMID CONSTRUCTION LTD is a friendly and reliable company based in East Ham who...

From £2,272

Last active Oct 26
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Kaseno Group

Kaseno Group are here to help customers who need an Extension Builder in East Ham. We offer a competitive rate to complete all your extension build...

RSJ cost in East Ham

Estimates for install an rsj near East Ham

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in East Ham it ranges from £2,080 (Can design and Construction based in Ig11) to £2,912 (Render based in IG1).

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


Estimates for common extension builder jobs in East Ham;

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...