From £2,192
Need to find an Extension Builder near you for all your extension buildering work?
A B Building Roofing Services provides a local, trusted ...
From £2,168
Relax... you have found a reliable extension builder in S45. CS Construction & Conversions is a friendly and reliable company based in S45 who cons...
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 ...
From £1,520
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,152
We offer a range of building services that are tailored to meet the specific needs of our clients. Whether you are looking to extend your home, con...
From £1,200
Honest, reliable, experienced building/civil engineering contractor established in 2001.
From £2,224
JG Design & Build is an established extension buildering business in S45. We come highly recommended and provide competitive quotes for your work.<...
From £2,056
Relax... you have found a reliable extension builder in S45. Bennett Damp Proofing & Timber is a friendly and reliable company based in S45 who con...
From £2,136
Need an Extension Builder in S45? Patrick David Building Services Limited has been helping local clients (20 mile radius) with their extension buil...
From £2,088
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in S45 it ranges from £1,200 (HUSKINSON CONSTR SRVCS LTD based in NG16) to £2,224 (JG Design & Build based in NG8).
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 S45 by posting a job with HaMuch and we will send it to extension builders in S45.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Chesterfield | £33 | £257 |
| 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 Ripley | £32 | £246 |
| Install An RSJ near Mansfield Woodhouse | £33 | £263 |
| Install An RSJ near Dronfield | £33 | £262 |
| Install An RSJ near Mansfield | £33 | £262 |
| Install An RSJ near Belper | £32 | £244 |
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 - £17,294

Two storey extension - £87,692

Build a timber frame extension - £25,794

Build a swimming pool - £80,794

Single storey extension - £50,888

Side return extension - £39,187

Install an RSJ - £1,994

Outbuilding - £9,794

Build a Mansard loft conversion - £51,794

Loft conversion - £31,823

Build a kitchen extension - £41,794

Hip to gable loft conversion - £41,794

Granny annexe - £86,794

Garden office - £9,794

Convert a Garage - £15,794

Garage - £18,294

Build a flat roof extension - £21,794

Build a dormer loft conversion - £41,794

Concrete foundations - £6,044

Convert a bungalow loft - £28,794

Convert a basement - £35,187