From £1,808
Relax... you have found a reliable extension builder in M23. R A C Gas is a friendly and reliable company based in M23 who consider no job as too b...
From £2,208
Ethos Property Developments Limited is an established extension buildering business in M23. We come highly recommended and provide competitive quot...
From £1,160
Member since November 2019
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,976
Relax... you have found a reliable extension builder in M23. David Anderson Builders is a friendly and reliable company based in M23 who consider n...
From £1,992
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
From £2,160
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
From £2,048
Trusted and professional extension builder in M23. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...
From £1,808
Need an Extension Builder in M23? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years. ...
From £1,832
Trusted and professional extension builder in M23. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on Gara...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in M23 it ranges from £1,160 (Aquatec Builder based in OL10) to £2,208 (Ethos Property Developments Limited based in SK15).
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 M23 by posting a job with HaMuch and we will send it to extension builders in M23.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Wythenshawe | £31 | £229 |
| Install An RSJ near Gatley | £31 | £230 |
| Install An RSJ near Sale | £32 | £235 |
| Install An RSJ near Altrincham | £32 | £228 |
| Install An RSJ near Trafford | £32 | £235 |
| Install An RSJ near Stretford | £32 | £235 |
| Install An RSJ near Old Trafford | £32 | £236 |
| Install An RSJ near Cheadle Hulme | £31 | £232 |
| Install An RSJ near Urmston | £32 | £231 |
| Install An RSJ near Wilmslow | £31 | £230 |
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 - £17,138

Two storey extension - £87,456

Build a timber frame extension - £25,638

Build a swimming pool - £80,638

Single storey extension - £47,752

Side return extension - £37,423

Install an RSJ - £1,838

Outbuilding - £9,638

Build a Mansard loft conversion - £51,638

Loft conversion - £30,353

Build a kitchen extension - £41,638

Hip to gable loft conversion - £41,638

Granny annexe - £86,638

Garden office - £9,638

Convert a Garage - £15,638

Garage - £18,138

Build a flat roof extension - £21,638

Build a dormer loft conversion - £41,638

Concrete foundations - £5,888

Convert a bungalow loft - £28,638

Convert a basement - £33,423