From £2,080
J.collinson is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote and comp...
From £2,016
DANNY WOOD BUILDERS LIMITED are here to help customers who need an Extension Builder in Barnard Castle. We offer a competitive rate to complete all...
From £1,936
Need an Extension Builder in Barnard Castle? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension build...
From £2,168
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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 £2,240
Need to find an Extension Builder near you for all your extension buildering work?
SBC (BUILDERS) LIMITED provides a local, trusted extensi...
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 £1,928
GURKHA CONSTRUCTION SVCS LTD is a trusted extension builder serving customers in Barnard Castle and the surrounding area. Contact us to today to ge...
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?
Victory Procurement Solutions provides a local, trusted...

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 £2,264 (Croft-Hill Building & Joinery based in DL15).
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 | £34 | £218 |
| Install An RSJ near Newton Aycliffe | £34 | £200 |
| Install An RSJ near Darlington | £53 | £194 |
| Install An RSJ near Spennymoor | £33 | £220 |
| Install An RSJ near Consett | £28 | £202 |
| Install An RSJ near Durham | £42 | £236 |
| Install An RSJ near Stanley | £29 | £206 |
| Install An RSJ near Chester-le-Street | £31 | £213 |
| Install An RSJ near Stockton-on-Tees | £35 | £201 |
| Install An RSJ near Ingleby Barwick | £36 | £202 |
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 - £17,363

Two storey extension - £87,795

Build a timber frame extension - £25,863

Build a swimming pool - £80,863

Single storey extension - £52,264

Side return extension - £39,961

Install an RSJ - £2,063

Outbuilding - £9,863

Build a Mansard loft conversion - £51,863

Loft conversion - £32,468

Build a kitchen extension - £41,863

Hip to gable loft conversion - £41,863

Granny annexe - £86,863

Garden office - £9,863

Convert a Garage - £15,863

Garage - £18,363

Build a flat roof extension - £21,863

Build a dormer loft conversion - £41,863

Concrete foundations - £6,113

Convert a bungalow loft - £28,863

Convert a basement - £35,961