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 £2,096

Last active Oct 26
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Barlam Drylining Ltd

Barlam Drylining Ltd are here to help customers who need an Extension Builder in CF46. We offer a competitive rate to complete all your extension b...

From £2,016

Last active Aug 26
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G T Brickwork

Gareth Thorpe

G T Brickwork is an established extension buildering business in CF46. We come highly recommended and provide competitive quotes for your work.

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From £1,904

Last active Jul 26
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BUILD-TEC CONTRACTORS LTD

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

From £2,048

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Atlantic Building Services Ltd

Atlantic Building Services Ltd is an established extension buildering business in CF46. We come highly recommended and provide competitive quotes f...

From £2,000

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MG3Design

Need an Extension Builder in CF46? MG3Design has been helping local clients (20 mile radius) with their extension buildering jobs for many years. G...

RSJ cost in CF46

Estimates for install an rsj near CF46

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CF46 it ranges from £1,904 (BUILD-TEC CONTRACTORS LTD based in CF45) to £2,096 (Barlam Drylining Ltd based in CF45).

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 CF46 by posting a job with HaMuch and we will send it to extension builders in CF46.


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Estimates for common extension builder jobs in CF46;

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...