From £2,096
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,024
Experienced extension builder ready to quote for your work. AW Building Projects North East Ltd is the best extension builder in Sedgefield. No obl...
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 £1,944
Trusted and professional extension builder in Sedgefield. Experienced in all extension buildering work and keeping within budget and on quote. Empi...
From £2,136
Design Consultancy & Construction Services Ltd are here to help customers who need an Extension Builder in Sedgefield. We offer a competitive rate ...
From £2,408
Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in Sedgefield. No obligation free quotes and ma...
From £1,960
Trusted and professional extension builder in Sedgefield. Experienced in all extension buildering work and keeping within budget and on quote. D & ...
From £2,080
Relax... you have found a reliable extension builder in Sedgefield. Under Pressure is a friendly and reliable company based in Sedgefield who consi...
From £2,016
Need an Extension Builder in Sedgefield? CHERRYBURN CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension builderin...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Sedgefield it ranges from £1,944 (Empire Building Contracts based in TS18) to £2,464 (Heritage NE Ltd based in DL17).
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 Sedgefield by posting a job with HaMuch and we will send it to extension builders in Sedgefield.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Stockton-on-Tees | £40 | £226 |
| Install An RSJ near Billingham | £43 | £240 |
| Install An RSJ near Newton Aycliffe | £39 | £227 |
| Install An RSJ near Thornaby-on-Tees | £41 | £230 |
| Install An RSJ near Middlesbrough | £42 | £235 |
| Install An RSJ near Ingleby Barwick | £41 | £227 |
| Install An RSJ near Spennymoor | £38 | £248 |
| Install An RSJ near Darlington | £60 | £222 |
| Install An RSJ near Hartlepool | £40 | £236 |
| Install An RSJ near Peterlee | £35 | £222 |
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 - £17,418

Two storey extension - £87,876

Build a timber frame extension - £25,918

Build a swimming pool - £80,918

Single storey extension - £53,352

Side return extension - £40,573

Install an RSJ - £2,118

Outbuilding - £9,918

Build a Mansard loft conversion - £51,918

Loft conversion - £32,978

Build a kitchen extension - £41,918

Hip to gable loft conversion - £41,918

Granny annexe - £86,918

Garden office - £9,918

Convert a Garage - £15,918

Garage - £18,418

Build a flat roof extension - £21,918

Build a dormer loft conversion - £41,918

Concrete foundations - £6,168

Convert a bungalow loft - £28,918

Convert a basement - £36,573