Khondda Olham
We agree on the work, price and appointment before starting. Our approach focuses on clear communication, punctuality, careful workmanship and leav...
Need an Extension Builder in B6? D&J Advanced Builders has been helping local clients (20 mile radius) with their extension buildering jobs for man...
Relax... you have found a reliable extension builder in B6. MD Services is a friendly and reliable company based in B6 who consider no job as too b...
Dave Mattock is an established and experienced local extension builder in B6. Please contact us for a free, no obligation quote and competitive rat...
AJ Home Improvements is an established extension buildering business in B6. We come highly recommended and provide competitive quotes for your work...
Brickfast Builders is an established extension buildering business in B6. We come highly recommended and provide competitive quotes for your work.<...
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 B6. Experienced in all extension buildering work and keeping within budget and on quote. Bhogal Const...
Lloyd Clarke
Need to find an Extension Builder near you for all your extension buildering work?
LC BUILDING SERVICES provides a local, trusted extension...
Sanj Sandhu
Relax... you have found a reliable extension builder in B6. Sanwood is a friendly and reliable company based in B6 who consider no job as too big o...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B6 it ranges from £1,768 (Dave Mattock based in B44) to £2,328 (Sanwood based in B73).
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 B6 by posting a job with HaMuch and we will send it to extension builders in B6.
"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 Birmingham | £28 | £226 |
| Install An RSJ near Smethwick | £29 | £225 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near West Bromwich | £28 | £225 |
| Install An RSJ near Oldbury | £29 | £226 |
| Install An RSJ near Sandwell | £29 | £228 |
| Install An RSJ near Rowley Regis | £29 | £225 |
| Install An RSJ near Wednesbury | £29 | £227 |
| Install An RSJ near Halesowen | £28 | £225 |
| Install An RSJ near Walsall | £29 | £226 |
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 - £17,363

Two storey extension - £87,795

Build a timber frame extension - £25,863

Build a swimming pool - £80,863

Single storey extension - £52,264

Side return extension - £39,961

Install an RSJ - £2,063

Outbuilding - £9,863

Build a Mansard loft conversion - £51,863

Loft conversion - £32,468

Build a kitchen extension - £41,863

Hip to gable loft conversion - £41,863

Granny annexe - £86,863

Garden office - £9,863

Convert a Garage - £15,863

Garage - £18,363

Build a flat roof extension - £21,863

Build a dormer loft conversion - £41,863

Concrete foundations - £6,113

Convert a bungalow loft - £28,863

Convert a basement - £35,961