Relax... you have found a reliable extension builder in B28. Tucker Construction is a friendly and reliable company based in B28 who consider no jo...
SM&S General Property Repairs is a trusted extension builder serving customers in B28 and the surrounding area. Contact us to today to get a compet...
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
Relax... you have found a reliable extension builder in B28. F.I.I Building Services Ltd is a friendly and reliable company based in B28 who consid...
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 ...
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B28. No obligation free quotes and many happy...
From £1,632
Peter Smith
Reliable and trustworthy
Also on checkatrafe
From £1,224
JAMES Crawford
we have over 13 years exp
we go that extra mile to make sure customers are 100 % happy
we cover a 20 miles radus for b26 area...
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 £2,184
Trusted and professional extension builder in B28. Experienced in all extension buildering work and keeping within budget and on quote. 2nd Generat...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B28 it ranges from £1,224 (J s building & maintenance services limited based in B26) 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 B28 by posting a job with HaMuch and we will send it to extension builders in B28.
"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 Birmingham | £28 | £226 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Smethwick | £29 | £225 |
| Install An RSJ near Oldbury | £29 | £226 |
| Install An RSJ near Halesowen | £28 | £225 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Rowley Regis | £29 | £225 |
| Install An RSJ near West Bromwich | £28 | £225 |
| Install An RSJ near Sandwell | £29 | £228 |
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 - £17,243

Two storey extension - £87,615

Build a timber frame extension - £25,743

Build a swimming pool - £80,743

Single storey extension - £49,864

Side return extension - £38,611

Install an RSJ - £1,943

Outbuilding - £9,743

Build a Mansard loft conversion - £51,743

Loft conversion - £31,343

Build a kitchen extension - £41,743

Hip to gable loft conversion - £41,743

Granny annexe - £86,743

Garden office - £9,743

Convert a Garage - £15,743

Garage - £18,243

Build a flat roof extension - £21,743

Build a dormer loft conversion - £41,743

Concrete foundations - £5,993

Convert a bungalow loft - £28,743

Convert a basement - £34,611