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.

HaMuch is Excellent

Install an RSJ cost in SO51 - Sort by rates or availability

From £2,240

Last active Jul 26
Get quotes

Grant Construction

Experienced extension builder ready to quote for your work. Grant Construction is the best extension builder in SO51. No obligation free quotes and...

From £2,384

Last active May 26
Get quotes

Novare Plumbing Ltd

The business offers a full design service for both kitchens and bathrooms.We work with you to make the best use of your space and find prod...

From £1,488

Get quotes

James Golby Construction

James Golby

All our work carries a life time guarantee , If we did it and you have a problem we want to know about it. Not the bloke in the pub or your next do...

From £2,472

Get quotes

Ibcon Construction

Ibcon Construction is an established and experienced local extension builder in SO51. Please contact us for a free, no obligation quote and competi...

From £2,112

Get quotes

BUY BUILDER LTD

BUY BUILDER LTD is an established extension buildering business in SO51. We come highly recommended and provide competitive quotes for your work.

From £2,160

Get quotes

E&B BUILDING SERVICES LTD

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

From £2,104

Get quotes

KT Carpentry & Building Services

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

From £2,264

Get quotes

James Golby Construction

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

RSJ cost in SO51

Estimates for install an rsj near SO51

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SO51 it ranges from £1,488 (James Golby Construction based in SO51) to £2,472 (Ibcon Construction based in SO51).

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 SO51 by posting a job with HaMuch and we will send it to extension builders in SO51.


Get extension builder rates instantly

Estimates for common extension builder jobs in SO51;

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...