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 DL10. Experienced in all extension buildering work and keeping within budget and on quote. D & G Buil...
From £1,944
Trusted and professional extension builder in DL10. Experienced in all extension buildering work and keeping within budget and on quote. Empire Bui...
From £2,080
Relax... you have found a reliable extension builder in DL10. Under Pressure is a friendly and reliable company based in DL10 who consider no job a...
From £1,920
S & K Windows are here to help customers who need an Extension Builder in DL10. We offer a competitive rate to complete all your extension builderi...
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 DL10. Please contact us for a free, no obligation quote and compe...
From £2,152
Barlow Construction Limited are here to help customers who need an Extension Builder in DL10. We offer a competitive rate to complete all your exte...
From £2,128
Woodale Construction Nidderdale is an established extension buildering business in DL10. We come highly recommended and provide competitive quotes...
From £2,072
Hi I'm darren
I'm a fully qualified time served joiner I have been doing it for 30 years and have been self employed for 12 years ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in DL10 it ranges from £1,832 (Partek Site Services based in DL2) to £2,152 (Barlow Construction Limited based in YO7).
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 DL10 by posting a job with HaMuch and we will send it to extension builders in DL10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Darlington | £60 | £222 |
| Install An RSJ near Newton Aycliffe | £39 | £227 |
| Install An RSJ near Ingleby Barwick | £41 | £228 |
| Install An RSJ near Bishop Auckland | £39 | £247 |
| Install An RSJ near Stockton-on-Tees | £41 | £228 |
| Install An RSJ near Thornaby-on-Tees | £42 | £231 |
| Install An RSJ near Spennymoor | £38 | £248 |
| Install An RSJ near Billingham | £44 | £242 |
| Install An RSJ near Middlesbrough | £43 | £236 |
| Install An RSJ near Eston | £42 | £241 |
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 - £17,326

Two storey extension - £87,738

Build a timber frame extension - £25,826

Build a swimming pool - £80,826

Single storey extension - £51,512

Side return extension - £39,538

Install an RSJ - £2,026

Outbuilding - £9,826

Build a Mansard loft conversion - £51,826

Loft conversion - £32,115

Build a kitchen extension - £41,826

Hip to gable loft conversion - £41,826

Granny annexe - £86,826

Garden office - £9,826

Convert a Garage - £15,826

Garage - £18,326

Build a flat roof extension - £21,826

Build a dormer loft conversion - £41,826

Concrete foundations - £6,076

Convert a bungalow loft - £28,826

Convert a basement - £35,538