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. 

Install an RSJ cost in Barnard Castle - Sort by rates or availability

Turners Roofing Services

From £2,120

(last active 02/10/26)

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

D & G Builders

From £1,960

(last active 01/10/26)

Trusted and professional extension builder in Barnard Castle. Experienced in all extension buildering work and keeping within budget and on quote. ...

AA Paving

From £2,200

(last active 01/10/26)

Relax... you have found a reliable extension builder in Barnard Castle. AA Paving is a friendly and reliable company based in Barnard Castle who co...

Victory Procurement Solutions

From £2,048

(last active 14/08/26)

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

Victory Procurement Solutions provides a local, trusted...

Partek Site Services

From £1,832

(last active 03/08/26)

Partek Site Services is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote...

K & J Property

From £1,960

Need an Extension Builder in Barnard Castle? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs fo...

Croft-Hill Building & Joinery

From £2,264

Croft-Hill Building & Joinery is a trusted extension builder serving customers in Barnard Castle and the surrounding area. Contact us to today to g...

ANWEN CONSTRUCTION

From £2,048

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

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

pidesigns

From £2,408

Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in Barnard Castle. No obligation free quotes an...

D. Simpson Roof Rite Services

From £2,168

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

RSJ cost in Barnard Castle

Estimates for install an rsj near Barnard Castle

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Barnard Castle it ranges from £1,832 (Partek Site Services based in DL2) to £2,408 (Pidesigns based in DL1).

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


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Estimates for common extension builder jobs in Barnard Castle;

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...