From £2,040
Trusted and professional extension builder in S65. Experienced in all extension buildering work and keeping within budget and on quote. Britishbuil...
From £2,304
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,168
Relax... you have found a reliable extension builder in S65. CS Construction & Conversions is a friendly and reliable company based in S65 who cons...
From £3,592
Green Exteriors Ltd are here to help customers who need an Extension Builder in S65. We offer a competitive rate to complete all your extension bui...
From £2,296
Trusted and professional extension builder in S65. Experienced in all extension buildering work and keeping within budget and on quote. urmum.co ha...
From £2,360
Need an Extension Builder in S65? Property Plus has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £2,184
BP Builders are here to help customers who need an Extension Builder in S65. We offer a competitive rate to complete all your extension buildering ...
From £2,056
Relax... you have found a reliable extension builder in S65. Tep's Building Services is a friendly and reliable company based in S65 who consider n...
From £2,080
Home Hero is a trusted extension builder serving customers in S65 and the surrounding area. Contact us to today to get a competitive quote for exte...
From £2,360
Sheffield basedFamily run businessBuilt on recommendationFollow our journey

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in S65 it ranges from £2,040 (Britishbuildogs based in S65) to £3,592 (Green Exteriors Ltd based in S60).
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 S65 by posting a job with HaMuch and we will send it to extension builders in S65.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rotherham | £29 | £226 |
| Install An RSJ near Wickersley | £29 | £224 |
| Install An RSJ near Sheffield | £30 | £246 |
| Install An RSJ near Doncaster | £26 | £208 |
| Install An RSJ near Barnsley | £27 | £210 |
| Install An RSJ near Dronfield | £31 | £253 |
| Install An RSJ near Worksop | £29 | £233 |
| Install An RSJ near Chesterfield | £29 | £225 |
| Install An RSJ near Bassetlaw | £28 | £214 |
| Install An RSJ near Pontefract | £26 | £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 - £17,644

Two storey extension - £88,216

Build a timber frame extension - £26,144

Build a swimming pool - £81,144

Single storey extension - £57,880

Side return extension - £43,120

Install an RSJ - £2,344

Outbuilding - £10,144

Build a Mansard loft conversion - £52,144

Loft conversion - £35,100

Build a kitchen extension - £42,144

Hip to gable loft conversion - £42,144

Granny annexe - £87,144

Garden office - £10,144

Convert a Garage - £16,144

Garage - £18,644

Build a flat roof extension - £22,144

Build a dormer loft conversion - £42,144

Concrete foundations - £6,394

Convert a bungalow loft - £29,144

Convert a basement - £39,120