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 £2,016

Last active Aug 26
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Eric J Ivins

Eric J Ivins is a trusted extension builder serving customers in Monmouthshire and the surrounding area. Contact us to today to get a competitive q...

From £2,184

Last active Aug 26
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PARTRIDGE - WILSON BUILDERS

Need to find an Extension Builder near you for all your extension buildering work?

PARTRIDGE - WILSON BUILDERS provides a local, trusted ex...

From £1,768

Last active Aug 26
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D BENDON CONSTRUCTION LTD

D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in Monmouthshire. Please contact us for a free, no obligation q...

From £1,944

Last active Aug 26
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OWEN BROTHERS CONSTRUCTION LTD

OWEN BROTHERS CONSTRUCTION LTD are here to help customers who need an Extension Builder in Monmouthshire. We offer a competitive rate to complete a...

From £1,968

Last active Dec 25
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JSP Building Contractors Ltd

Our building services company JSP Carpentry & Building Services has 15 years of experience in the industry. Since then, we have been helping custom...

From £1,808

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HEDLYN BUILDING CONTRACTORS

Relax... you have found a reliable extension builder in Monmouthshire. HEDLYN BUILDING CONTRACTORS is a friendly and reliable company based in Mon...

From £2,144

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H VAUGHAN BUILDERS

H VAUGHAN BUILDERS is an established extension buildering business in Monmouthshire. We come highly recommended and provide competitive quotes for ...

RSJ cost in Monmouthshire

Estimates for install an rsj near Monmouthshire

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Monmouthshire it ranges from £1,768 (D BENDON CONSTRUCTION LTD based in NP4) to £2,184 (PARTRIDGE - WILSON BUILDERS based in NP44).

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


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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Pontypool£30£210
Install An RSJ near Cwmbran£43£219
Install An RSJ near Newport£41£233
Install An RSJ near Risca£32£218
Install An RSJ near Ebbw Vale£30£217
Install An RSJ near Tredegar£30£217
Install An RSJ near Caerphilly£33£208
Install An RSJ near Portishead£33£247
Install An RSJ near Bradley Stoke£34£259
Install An RSJ near Clevedon£32£243

Estimates for common extension builder jobs in Monmouthshire;

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...