From £2,240
Experienced extension builder ready to quote for your work. Redbrickz Property Management Ltd is the best extension builder in Shirley. No obligati...
From £2,144
Shirley, B90
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
From £1,928
Relax... you have found a reliable extension builder in Shirley. F.I.I Building Services Ltd is a friendly and reliable company based in Shirley wh...
From £2,168
We are a forward thinking, award winning design and build company based in Solihull in the West Midlands. We strive to deliver the best experience ...
From £1,984
Form Construction Midlands Limited is a trusted extension builder serving customers in Shirley and the surrounding area. Contact us to today to get...
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 £2,128
JEWEL BUILDERS LTD are here to help customers who need an Extension Builder in Shirley. We offer a competitive rate to complete all your extension ...
From £2,264
I have been in the building industry for 28 years and have carried out extensions,loft conversions, knock throughs, plastering, carpentry,roofing a...
From £2,184
Trusted and professional extension builder in Shirley. Experienced in all extension buildering work and keeping within budget and on quote. 2nd Gen...
From £2,080
Relax... you have found a reliable extension builder in Shirley. Tucker Construction is a friendly and reliable company based in Shirley who consid...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Shirley it ranges from £1,792 (JT Home Improvement based in B14) to £2,264 (MYBUILD based in B93).
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 Shirley by posting a job with HaMuch and we will send it to extension builders in Shirley.
"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 Solihull | £29 | £231 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Birmingham | £29 | £227 |
| Install An RSJ near Smethwick | £29 | £226 |
| Install An RSJ near Oldbury | £29 | £227 |
| Install An RSJ near Halesowen | £29 | £227 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Bromsgrove | £31 | £237 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near West Bromwich | £29 | £227 |
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 - £17,391

Two storey extension - £87,837

Build a timber frame extension - £25,891

Build a swimming pool - £80,891

Single storey extension - £52,824

Side return extension - £40,276

Install an RSJ - £2,091

Outbuilding - £9,891

Build a Mansard loft conversion - £51,891

Loft conversion - £32,730

Build a kitchen extension - £41,891

Hip to gable loft conversion - £41,891

Granny annexe - £86,891

Garden office - £9,891

Convert a Garage - £15,891

Garage - £18,391

Build a flat roof extension - £21,891

Build a dormer loft conversion - £41,891

Concrete foundations - £6,141

Convert a bungalow loft - £28,891

Convert a basement - £36,276