From £2,144
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,160
SM&S General Property Repairs is a trusted extension builder serving customers in Kings Norton and the surrounding area. Contact us to today to get...
From £2,080
Relax... you have found a reliable extension builder in Kings Norton. Tucker Construction is a friendly and reliable company based in Kings Norton ...
From £2,144
Wilson & Son is an established and experienced local extension builder in Kings Norton. Please contact us for a free, no obligation quote and compe...
From £1,944
Relax... you have found a reliable extension builder in Kings Norton. Platinum Build is a friendly and reliable company based in Kings Norton who c...
From £1,928
Trusted and professional extension builder in Kings Norton. Experienced in all extension buildering work and keeping within budget and on quote. D ...
From £1,792
Need to find an Extension Builder near you for all your extension buildering work?
JT Home Improvement provides a local, trusted extension ...
From £2,104
Trusted and professional extension builder in Kings Norton. Experienced in all extension buildering work and keeping within budget and on quote. Ci...
From £1,800
Need to find an Extension Builder near you for all your extension buildering work?
D Broomhall provides a local, trusted extension builderi...
From £2,184
Trusted and professional extension builder in Kings Norton. Experienced in all extension buildering work and keeping within budget and on quote. 2n...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Kings Norton it ranges from £1,792 (JT Home Improvement based in B14) to £2,184 (2nd Generation Building Services based in B13).
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 Kings Norton by posting a job with HaMuch and we will send it to extension builders in Kings Norton.
"RSJ installation" - B90, job posted 03/08/26
"Total cost of structural engineer report, supply and install 6M RSJ for a load bearing wall to make kitchen/diner." - B90, job posted 01/11/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Halesowen | £29 | £227 |
| Install An RSJ near Oldbury | £29 | £227 |
| Install An RSJ near Birmingham | £29 | £227 |
| Install An RSJ near Smethwick | £29 | £226 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Bromsgrove | £31 | £237 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near West Bromwich | £29 | £227 |
| Install An RSJ near Brierley Hill | £28 | £222 |
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 - £17,328

Two storey extension - £87,742

Build a timber frame extension - £25,828

Build a swimming pool - £80,828

Single storey extension - £51,560

Side return extension - £39,565

Install an RSJ - £2,028

Outbuilding - £9,828

Build a Mansard loft conversion - £51,828

Loft conversion - £32,138

Build a kitchen extension - £41,828

Hip to gable loft conversion - £41,828

Granny annexe - £86,828

Garden office - £9,828

Convert a Garage - £15,828

Garage - £18,328

Build a flat roof extension - £21,828

Build a dormer loft conversion - £41,828

Concrete foundations - £6,078

Convert a bungalow loft - £28,828

Convert a basement - £35,565