From £2,168
Need an Extension Builder in Selly Oak? Multiservice K Construction Ltd has been helping local clients (20 mile radius) with their extension builde...
From £2,304
We are a design and build company that offer bespoke services to our clients, delivering professional services that help home owners achieve their ...
From £2,144
Wilson & Son is an established and experienced local extension builder in Selly Oak. Please contact us for a free, no obligation quote and competit...
From £2,000
Need to find an Extension Builder near you for all your extension buildering work?
Michael Locke Garage Doors provides a local, trusted ext...
From £1,880
Experienced extension builder ready to quote for your work. K Barrett Roofing LTD is the best extension builder in Selly Oak. No obligation free qu...
From £1,944
Relax... you have found a reliable extension builder in Selly Oak. Platinum Build is a friendly and reliable company based in Selly Oak who conside...
From £2,056
HSS CONSTRUCTION LTD are here to help customers who need an Extension Builder in Selly Oak. We offer a competitive rate to complete all your extens...
From £1,912
Mountainview Construction is an established and experienced local extension builder in Selly Oak. Please contact us for a free, no obligation quote...
From £2,080
Relax... you have found a reliable extension builder in Selly Oak. Tucker Construction is a friendly and reliable company based in Selly Oak who co...
From £2,136
Kunda Group is a trusted extension builder serving customers in Selly Oak and the surrounding area. Contact us to today to get a competitive quote ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Selly Oak it ranges from £1,880 (K Barrett Roofing LTD based in B32) to £2,304 (Multiservice K Construction Ltd based in B17).
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 Selly Oak by posting a job with HaMuch and we will send it to extension builders in Selly Oak.
"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 | £227 |
| Install An RSJ near Halesowen | £29 | £227 |
| Install An RSJ near Smethwick | £29 | £226 |
| Install An RSJ near Birmingham | £29 | £227 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near West Bromwich | £29 | £227 |
| Install An RSJ near Sandwell | £29 | £229 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Dudley | £28 | £225 |
| 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 - £17,362

Two storey extension - £87,794

Build a timber frame extension - £25,862

Build a swimming pool - £80,862

Single storey extension - £52,248

Side return extension - £39,952

Install an RSJ - £2,062

Outbuilding - £9,862

Build a Mansard loft conversion - £51,862

Loft conversion - £32,460

Build a kitchen extension - £41,862

Hip to gable loft conversion - £41,862

Granny annexe - £86,862

Garden office - £9,862

Convert a Garage - £15,862

Garage - £18,362

Build a flat roof extension - £21,862

Build a dormer loft conversion - £41,862

Concrete foundations - £6,112

Convert a bungalow loft - £28,862

Convert a basement - £35,952