Khondda Olham
We agree on the work, price and appointment before starting. Our approach focuses on clear communication, punctuality, careful workmanship and leav...
Wilson & Son is an established and experienced local extension builder in B17. Please contact us for a free, no obligation quote and competitive ra...
Need to find an Extension Builder near you for all your extension buildering work?
Michael Locke Garage Doors provides a local, trusted ext...
Relax... you have found a reliable extension builder in B17. Platinum Build is a friendly and reliable company based in B17 who consider no job as ...
Need to find an Extension Builder near you for all your extension buildering work?
Atwal Building Services Ltd provides a local, trusted ex...
Trusted and professional extension builder in B17. Experienced in all extension buildering work and keeping within budget and on quote. Bhogal Cons...
Experienced extension builder ready to quote for your work. K Barrett Roofing LTD is the best extension builder in B17. No obligation free quotes a...
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B17. No obligation free quotes and many happy...
From £2,056
HSS CONSTRUCTION LTD are here to help customers who need an Extension Builder in B17. We offer a competitive rate to complete all your extension bu...
From £1,896
Need an Extension Builder in B17? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering jobs for m...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B17 it ranges from £1,768 (Bhogal Construction based in B67) to £2,248 (Darthy serices and cleaning based in B5).
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 B17 by posting a job with HaMuch and we will send it to extension builders in B17.
"Removal of 3 walls and 3 RSJ installations to extend a kitchen. Need for a structual engineering consultation and building control approval since at least one wall will be load bearing." - BIRMINGHAM, job posted 05/05/24
"RSJ installation" - BIRMINGHAM, job posted 01/03/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Oldbury | £29 | £226 |
| Install An RSJ near Smethwick | £29 | £225 |
| Install An RSJ near Halesowen | £28 | £225 |
| Install An RSJ near Birmingham | £28 | £226 |
| Install An RSJ near Rowley Regis | £29 | £225 |
| Install An RSJ near West Bromwich | £28 | £225 |
| Install An RSJ near Sandwell | £29 | £228 |
| Install An RSJ near Dudley | £28 | £225 |
| Install An RSJ near Tipton | £29 | £226 |
| 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 - £17,324

Two storey extension - £87,736

Build a timber frame extension - £25,824

Build a swimming pool - £80,824

Single storey extension - £51,480

Side return extension - £39,520

Install an RSJ - £2,024

Outbuilding - £9,824

Build a Mansard loft conversion - £51,824

Loft conversion - £32,100

Build a kitchen extension - £41,824

Hip to gable loft conversion - £41,824

Granny annexe - £86,824

Garden office - £9,824

Convert a Garage - £15,824

Garage - £18,324

Build a flat roof extension - £21,824

Build a dormer loft conversion - £41,824

Concrete foundations - £6,074

Convert a bungalow loft - £28,824

Convert a basement - £35,520