Trusted and professional extension builder in Darlington West. Experienced in all extension buildering work and keeping within budget and on quote....
Relax... you have found a reliable extension builder in Darlington West. Under Pressure is a friendly and reliable company based in Darlington West...
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 Darlington West. No obligation free quotes a...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Darlington West it ranges from £1,960 (D & G Builders based in DL3) 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 Darlington West by posting a job with HaMuch and we will send it to extension builders in Darlington West.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Darlington | £60 | £222 |
| Install An RSJ near Newton Aycliffe | £38 | £225 |
| Install An RSJ near Stockton-on-Tees | £41 | £228 |
| Install An RSJ near Bishop Auckland | £38 | £248 |
| Install An RSJ near Ingleby Barwick | £41 | £228 |
| Install An RSJ near Thornaby-on-Tees | £42 | £231 |
| Install An RSJ near Spennymoor | £37 | £249 |
| 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 - £17,424

Two storey extension - £87,886

Build a timber frame extension - £25,924

Build a swimming pool - £80,924

Single storey extension - £53,480

Side return extension - £40,645

Install an RSJ - £2,124

Outbuilding - £9,924

Build a Mansard loft conversion - £51,924

Loft conversion - £33,038

Build a kitchen extension - £41,924

Hip to gable loft conversion - £41,924

Granny annexe - £86,924

Garden office - £9,924

Convert a Garage - £15,924

Garage - £18,424

Build a flat roof extension - £21,924

Build a dormer loft conversion - £41,924

Concrete foundations - £6,174

Convert a bungalow loft - £28,924

Convert a basement - £36,645