From £2,448
Here at AEC Building Services, we've been improving homes for local residential customers in Chesterfield, Derbyshire and surrounding areas since 1...
From £2,224
Camo Bear Construction is a local building contractor based in Wingerworth, Chesterfield. We cover many areas across Derbyshire, South Yorkshire an...
From £2,472
R.J Building Services is an established extension buildering business in S42. We come highly recommended and provide competitive quotes for your wo...
From £2,136
Trusted and professional extension builder in S42. Experienced in all extension buildering work and keeping within budget and on quote. Merebrook C...
From £2,088
JWM Building Services is a trusted extension builder serving customers in S42 and the surrounding area. Contact us to today to get a competitive qu...
From £2,128
Relax... you have found a reliable extension builder in S42. Palace Roofline Ltd is a friendly and reliable company based in S42 who consider no jo...
From £2,080
RJH Building Services is a trusted extension builder serving customers in S42 and the surrounding area. Contact us to today to get a competitive qu...
From £2,200
Need an Extension Builder in S42? D H Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years....
From £2,568
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,592
Peak Roofclean offer an inexpensive way of permanently keeping your roof free of moss, lichens and algae. Not only is it 100% effective but...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in S42 it ranges from £2,080 (RJH Building Services based in S40) to £2,592 (Peak Roof Clean based in S42).
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 S42 by posting a job with HaMuch and we will send it to extension builders in S42.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Chesterfield | £33 | £257 |
| Install An RSJ near Dronfield | £35 | £288 |
| Install An RSJ near Alfreton | £34 | £261 |
| Install An RSJ near Sutton-in-Ashfield | £33 | £265 |
| Install An RSJ near Kirkby-in-Ashfield | £34 | £270 |
| Install An RSJ near Ashfield | £34 | £270 |
| Install An RSJ near Mansfield Woodhouse | £33 | £263 |
| Install An RSJ near Mansfield | £33 | £262 |
| Install An RSJ near Ripley | £32 | £246 |
| Install An RSJ near Forest Town | £33 | £263 |
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 - £17,594

Two storey extension - £88,140

Build a timber frame extension - £26,094

Build a swimming pool - £81,094

Single storey extension - £56,872

Side return extension - £42,553

Install an RSJ - £2,294

Outbuilding - £10,094

Build a Mansard loft conversion - £52,094

Loft conversion - £34,628

Build a kitchen extension - £42,094

Hip to gable loft conversion - £42,094

Granny annexe - £87,094

Garden office - £10,094

Convert a Garage - £16,094

Garage - £18,594

Build a flat roof extension - £22,094

Build a dormer loft conversion - £42,094

Concrete foundations - £6,344

Convert a bungalow loft - £29,094

Convert a basement - £38,553