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 £2,176

Last active Oct 26
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DW Building

DW Building is a trusted extension builder serving customers in Botany Bay and the surrounding area. Contact us to today to get a competitive quote...

From £2,072

Last active Oct 26
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Colin Lynch Builders

Need an Extension Builder in Botany Bay? Colin Lynch Builders has been helping local clients (10 mile radius) with their extension buildering jobs ...

From £2,256

Last active Oct 26
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Wittick Building Ltd

Wittick Building Ltd is a trusted extension builder serving customers in Botany Bay and the surrounding area. Contact us to today to get a competit...

From £2,632

Last active Oct 26
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MM-Builders

Shelim Miah

Maintenance and repair 

Family run business from 2006

 

 

From £2,408

Last active Sep 26
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Roni Lofts Conversions Ltd

Need an Extension Builder in Botany Bay? Roni Lofts Conversions Ltd has been helping local clients (10 mile radius) with their extension buildering...

From £2,160

Last active Jul 26
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The00Company Ltd

Homeowners look no further if you want a qualified extension builder to work in your home. The00Company Ltd are tidy and neat, providing a quality ...

From £2,592

Last active Jun 26
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Home Projects

Relax... you have found a reliable extension builder in Botany Bay. Home Projects is a friendly and reliable company based in Botany Bay who consid...

From £2,512

Last active Mar 26
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R & I Builders

R & I Builders is an established extension buildering business in Botany Bay. We come highly recommended and provide competitive quotes for your wo...

From £2,552

Last active Mar 26
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EVS ARCHITECTURE & CONSTRUCTION LTD

HOW WE WORK?We are here to design the best places!Our experience includes projects all over the world, from small scaled projects to large resident...

From £2,632

Last active Mar 26
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AGK Building Services Ltd

AGK Building Services Ltd is a small family-run business with more than 20 years' experience in the building services industry. We have a team of d...

RSJ cost in Botany Bay

Estimates for install an rsj near Botany Bay

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Botany Bay it ranges from £2,072 (Colin Lynch Builders based in EN3) to £2,632 (MM-Builders based in N9).

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


Estimates for common extension builder jobs in Botany Bay;

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...