From £2,120
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,960
Trusted and professional extension builder in Barnard Castle. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £2,200
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...
From £2,048
Need to find an Extension Builder near you for all your extension buildering work?
Victory Procurement Solutions provides a local, trusted...
From £1,832
Partek Site Services is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote...
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...
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...
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...
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...
From £2,168
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

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.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Bishop Auckland | £39 | £247 |
| Install An RSJ near Newton Aycliffe | £39 | £227 |
| Install An RSJ near Darlington | £60 | £222 |
| Install An RSJ near Spennymoor | £38 | £248 |
| Install An RSJ near Consett | £33 | £241 |
| Install An RSJ near Durham | £47 | £267 |
| Install An RSJ near Stanley | £34 | £242 |
| Install An RSJ near Chester-le-Street | £35 | £242 |
| Install An RSJ near Stockton-on-Tees | £41 | £228 |
| Install An RSJ near Ingleby Barwick | £41 | £228 |
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.

Underpin a building - £17,401

Two storey extension - £87,851

Build a timber frame extension - £25,901

Build a swimming pool - £80,901

Single storey extension - £53,016

Side return extension - £40,384

Install an RSJ - £2,101

Outbuilding - £9,901

Build a Mansard loft conversion - £51,901

Loft conversion - £32,820

Build a kitchen extension - £41,901

Hip to gable loft conversion - £41,901

Granny annexe - £86,901

Garden office - £9,901

Convert a Garage - £15,901

Garage - £18,401

Build a flat roof extension - £21,901

Build a dormer loft conversion - £41,901

Concrete foundations - £6,151

Convert a bungalow loft - £28,901

Convert a basement - £36,384