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 £1,928

Last active Oct 26
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The Philog Paving Services

The Philog Paving Services is an established extension buildering business in CF23. We come highly recommended and provide competitive quotes for y...

From £1,816

Last active Sep 26
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JA Building Maintenance

Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in CF23. No obligation free quote...

From £1,984

Last active Sep 26
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TOR BUILD

Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in CF23. No obligation free quotes and many hap...

From £1,832

Last active Sep 26
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Charles Marshall Contracting Ltd

Relax... you have found a reliable extension builder in CF23. Charles Marshall Contracting Ltd is a friendly and reliable company based in CF23 who...

From £1,240

Last active Jul 26
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PK CONSTRUCTION

Paul Knox

Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. PK CONSTRU...

From £1,992

Last active Jul 26
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MCp Home Improvements

MCp Home Improvements is an established and experienced local extension builder in CF23. Please contact us for a free, no obligation quote and comp...

From £2,096

Last active Jun 26
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River Gods Limited

River Gods is a respected name in bathroom and kitchen design throughout South Wales. Known for quality, artisan-ship and exceptional value for mon...

From £1,880

Last active Jun 26
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ABS Allied Trades

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

ABS Allied Trades provides a local, trusted extension bu...

From £1,920

Last active Jun 26
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MGKB Ltd

Relax... you have found a reliable extension builder in CF23. MGKB Ltd is a friendly and reliable company based in CF23 who consider no job as too ...

From £1,920

Last active Jun 26
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TLC Building Services

Trusted and professional extension builder in CF23. Experienced in all extension buildering work and keeping within budget and on quote. TLC Buildi...

RSJ cost in CF23

Estimates for install an rsj near CF23

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CF23 it ranges from £1,240 (PK CONSTRUCTION based in CF14) to £2,096 (River Gods Limited based in CF14).

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 CF23 by posting a job with HaMuch and we will send it to extension builders in CF23.

"RSJ installation to open up kitchen and utility room. About 2m wide." - CARDIFF, job posted 01/01/70

"RSJ installation" - CARDIFF, job posted 01/01/70


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Cardiff£34£223
Install An RSJ near Caerphilly£33£208
Install An RSJ near Penarth£35£223
Install An RSJ near Risca£32£218
Install An RSJ near Church Village£34£214
Install An RSJ near Newport£41£233
Install An RSJ near Pontypridd£33£211
Install An RSJ near Barry£33£218
Install An RSJ near Cwmbran£43£219
Install An RSJ near Rhondda£31£206

Estimates for common extension builder jobs in CF23;

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...