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 Get quotes.

HaMuch is Excellent

Install an RSJ cost in Knowle - Sort by rates or availability

From £2,080

Last active Oct 26
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Tucker Construction

Relax... you have found a reliable extension builder in Knowle. Tucker Construction is a friendly and reliable company based in Knowle who consider...

From £2,160

Last active Oct 26
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SM&S General Property Repairs

SM&S General Property Repairs is a trusted extension builder serving customers in Knowle and the surrounding area. Contact us to today to get a com...

From £2,024

Last active Oct 26
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G Wilson Building & Roofing Services

Gary Wilson

Reliable person 25 years experience 

if you look on a website rated people and have a look at my ratings 

From £1,912

Last active Oct 26
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BAKER CONSTRUCTION

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

BAKER CONSTRUCTION provides a local, trusted extension b...

From £2,144

Last active Oct 26
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Avonvale Garage Doors

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

Avonvale Garage Doors provides a local, trusted extensio...

From £2,080

Last active Sep 26
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IMAGE BUILDING SERVICES LMT

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

From £2,264

Last active Sep 26
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MYBUILD

Ben Birch

I have been in the building industry for 28 years and have carried out extensions,loft conversions, knock throughs, plastering, carpentry,roofing a...

From £1,928

Last active Sep 26
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F.I.I Building Services Ltd

Relax... you have found a reliable extension builder in Knowle. F.I.I Building Services Ltd is a friendly and reliable company based in Knowle who ...

From £1,976

Last active Jul 26
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Benton Builders

Benton Builders is an established and experienced local extension builder in Knowle. Please contact us for a free, no obligation quote and competit...

From £1,904

Last active Jul 26
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Oakwood Construction

Building Beautiful Homes Since 1980Welcome to Oakwood Construction. Here in the heart of the Midlands, we are more than simply your new home builde...

RSJ cost in Knowle

Estimates for install an rsj near Knowle

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Knowle it ranges from £1,904 (Oakwood Construction based in CV4) to £2,264 (MYBUILD based in B93).

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

"Total cost of structural engineer report, supply and install 6M RSJ for a load bearing wall to make kitchen/diner." - B90, job posted 01/11/25

"RSJ installation" - B90, job posted 03/08/26


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Knowle£31£241
Install An RSJ near Solihull£29£231
Install An RSJ near Kenilworth£29£223
Install An RSJ near Coventry£28£221
Install An RSJ near Warwick£28£213
Install An RSJ near Birmingham£28£226
Install An RSJ near Leamington Spa£27£212
Install An RSJ near Sutton Coldfield£29£228
Install An RSJ near Smethwick£28£225
Install An RSJ near Bedworth£28£219

Estimates for common extension builder jobs in Knowle;

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...