From £2,112
Oliver Wild Ltd is an established extension buildering business in S20. We come highly recommended and provide competitive quotes for your work.
From £2,064
Trusted and professional extension builder in S20. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONSTRU...
From £2,336
S. & A. Parsons (Building Contractors) Limited is a trusted extension builder serving customers in S20 and the surrounding area. Contact us to toda...
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 £2,384
Trusted and professional extension builder in S20. Experienced in all extension buildering work and keeping within budget and on quote. Maison Frai...
From £2,104
Looking to Transform Your Home Space?Maison Frais are Space Solution Specialists based in S. Yorkshire. We help TRANSFORM people's family homes to ...
From £2,296
MRP Design And Build Limited is an established extension buildering business in S20. We come highly recommended and provide competitive quotes for ...
From £2,056
C ROWLEY (SELFBUILD) is an established and experienced local extension builder in S20. Please contact us for a free, no obligation quote and compet...
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 £2,208
We are a family run business with 20 years experience.
We take great care and attention to the work we carry out and pride ourselves on ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in S20 it ranges from £2,056 (C ROWLEY (SELFBUILD) based in S43) 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 S20 by posting a job with HaMuch and we will send it to extension builders in S20.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Dronfield | £31 | £253 |
| Install An RSJ near Sheffield | £30 | £246 |
| 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 Mansfield Woodhouse | £29 | £227 |
| Install An RSJ near Forest Town | £29 | £227 |
| Install An RSJ near Sutton-in-Ashfield | £28 | £231 |
| Install An RSJ near Mansfield | £28 | £224 |
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 - £17,570

Two storey extension - £88,104

Build a timber frame extension - £26,070

Build a swimming pool - £81,070

Single storey extension - £56,392

Side return extension - £42,283

Install an RSJ - £2,270

Outbuilding - £10,070

Build a Mansard loft conversion - £52,070

Loft conversion - £34,403

Build a kitchen extension - £42,070

Hip to gable loft conversion - £42,070

Granny annexe - £87,070

Garden office - £10,070

Convert a Garage - £16,070

Garage - £18,570

Build a flat roof extension - £22,070

Build a dormer loft conversion - £42,070

Concrete foundations - £6,320

Convert a bungalow loft - £29,070

Convert a basement - £38,283