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 £2,056

Last active Jun 26
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Trowel On

Trowel On is an established extension buildering business in SO40. We come highly recommended and provide competitive quotes for your work.

From £2,128

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GDS Building & Maintenance Ltd

GDS Building & Maintenance Ltd is an established and experienced local extension builder in SO40. Please contact us for a free, no obligation quote...

From £2,128

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1st Oak Building Preservation & Maintenance

Relax... you have found a reliable extension builder in SO40. 1st Oak Building Preservation & Maintenance is a friendly and reliable company based ...

From £2,312

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Safespec Building Services Limited

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

From £2,104

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KT Carpentry & Building Services

Our building services company KT Carpentry & Building Services has been helping customers in Southampton, Winchester, Brockenhurst and Portsmouth b...

RSJ cost in SO40

Estimates for install an rsj near SO40

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SO40 it ranges from £2,056 (Trowel On based in SO40) to £2,312 (Safespec Building Services Limited based in SO40).

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 SO40 by posting a job with HaMuch and we will send it to extension builders in SO40.


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Totton£34£243
Install An RSJ near Southampton£34£243
Install An RSJ near Romsey£32£230
Install An RSJ near New Forest£32£245
Install An RSJ near Eastleigh£34£244
Install An RSJ near Chandler's Ford£34£245
Install An RSJ near Hedge End£34£244
Install An RSJ near Locks Heath£33£240
Install An RSJ near Winchester£39£283
Install An RSJ near Fareham£35£250

Estimates for common extension builder jobs in SO40;

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...