From £2,544
Need to find an Extension Builder near you for all your extension buildering work?
JHM Property Services Ltd provides a local, trusted exte...
From £2,112
Oliver Wild Ltd is an established extension buildering business in S12. We come highly recommended and provide competitive quotes for your work.
From £2,296
MRP Design And Build Limited is an established extension buildering business in S12. We come highly recommended and provide competitive quotes for ...
From £2,544
Trusted and professional extension builder in S12. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joinery...
From £2,592
Need to find an Extension Builder near you for all your extension buildering work?
C.J.I Property Maintenance provides a local, trusted ext...
From £2,368
Milestone Builders is an established extension buildering business in S12. We come highly recommended and provide competitive quotes for your work....
From £2,512
Whitshaw Builders LTD is an established and experienced local extension builder in S12. Please contact us for a free, no obligation quote and compe...
From £2,064
Trusted and professional extension builder in S12. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONSTRU...
From £2,080
Home Hero is a trusted extension builder serving customers in S12 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 S12 it ranges from £2,064 (MGG CONSTRUCTION LTD based in S21) to £2,592 (C.J.I Property Maintenance based in S8).
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 S12 by posting a job with HaMuch and we will send it to extension builders in S12.
"RSJ installation" - SHEFFIELD
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Sheffield | £30 | £246 |
| Install An RSJ near Dronfield | £31 | £253 |
| Install An RSJ near Rotherham | £29 | £226 |
| Install An RSJ near Wickersley | £29 | £224 |
| Install An RSJ near Chesterfield | £29 | £225 |
| Install An RSJ near Worksop | £29 | £233 |
| Install An RSJ near Barnsley | £27 | £210 |
| Install An RSJ near Mansfield Woodhouse | £29 | £227 |
| Install An RSJ near Sutton-in-Ashfield | £28 | £231 |
| Install An RSJ near Doncaster | £26 | £208 |
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 - £17,647

Two storey extension - £88,221

Build a timber frame extension - £26,147

Build a swimming pool - £81,147

Single storey extension - £57,944

Side return extension - £43,156

Install an RSJ - £2,347

Outbuilding - £10,147

Build a Mansard loft conversion - £52,147

Loft conversion - £35,130

Build a kitchen extension - £42,147

Hip to gable loft conversion - £42,147

Granny annexe - £87,147

Garden office - £10,147

Convert a Garage - £16,147

Garage - £18,647

Build a flat roof extension - £22,147

Build a dormer loft conversion - £42,147

Concrete foundations - £6,397

Convert a bungalow loft - £29,147

Convert a basement - £39,156