From £2,096
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
2 reviews
From £2,464
30 years experience In building . Plastering and colour renders
"Totally unreliable, takes your money and doesn't finish the job." - NORTH EAST,reviewed 04/10/17, L S
From £1,960
Trusted and professional extension builder in DL14. Experienced in all extension buildering work and keeping within budget and on quote. D & G Buil...
From £2,304
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in DL14. Please contact us for a free, no obligation quote and c...
From £1,944
Trusted and professional extension builder in DL14. Experienced in all extension buildering work and keeping within budget and on quote. Empire Bui...
From £3,112
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
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 £2,008
Trusted and professional extension builder in DL14. Experienced in all extension buildering work and keeping within budget and on quote. DHB Builde...
From £2,032
LJP Roofing are here to help customers who need an Extension Builder in DL14. We offer a competitive rate to complete all your extension buildering...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in DL14 it ranges from £1,944 (Empire Building Contracts based in TS18) to £3,112 (Radici Construction North East Ltd based in DH1).
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 DL14 by posting a job with HaMuch and we will send it to extension builders in DL14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Bishop Auckland | £39 | £247 |
| Install An RSJ near Spennymoor | £38 | £248 |
| Install An RSJ near Newton Aycliffe | £39 | £227 |
| Install An RSJ near Durham | £47 | £267 |
| Install An RSJ near Darlington | £60 | £222 |
| Install An RSJ near Chester-le-Street | £35 | £242 |
| Install An RSJ near Stanley | £34 | £242 |
| Install An RSJ near Consett | £33 | £241 |
| Install An RSJ near Stockton-on-Tees | £41 | £228 |
| Install An RSJ near Peterlee | £36 | £230 |
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 - £17,524

Two storey extension - £88,036

Build a timber frame extension - £26,024

Build a swimming pool - £81,024

Single storey extension - £55,480

Side return extension - £41,770

Install an RSJ - £2,224

Outbuilding - £10,024

Build a Mansard loft conversion - £52,024

Loft conversion - £33,975

Build a kitchen extension - £42,024

Hip to gable loft conversion - £42,024

Granny annexe - £87,024

Garden office - £10,024

Convert a Garage - £16,024

Garage - £18,524

Build a flat roof extension - £22,024

Build a dormer loft conversion - £42,024

Concrete foundations - £6,274

Convert a bungalow loft - £29,024

Convert a basement - £37,770