From £1,896
Laurence Cox is an established and experienced local extension builder in B5. Please contact us for a free, no obligation quote and competitive rat...
From £2,136
Kunda Group is a trusted extension builder serving customers in B5 and the surrounding area. Contact us to today to get a competitive quote for ext...
From £2,120
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B5. No obligation free quotes and many happy ...
From £2,072
Relax... you have found a reliable extension builder in B5. BORDO Design is a friendly and reliable company based in B5 who consider no job as too ...
From £1,904
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in B5. No obligation free quotes and many ...
From £1,896
Need an Extension Builder in B5? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
From £1,912
Mountainview Construction is an established and experienced local extension builder in B5. Please contact us for a free, no obligation quote and co...
From £1,840
Renka is an established and experienced local extension builder in B5. Please contact us for a free, no obligation quote and competitive rates. Cov...
From £1,992
Need an Extension Builder in B5? EDEN BUILD LTD has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £1,904
Trusted and professional extension builder in B5. Experienced in all extension buildering work and keeping within budget and on quote. Probuild360 ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B5 it ranges from £1,840 (Renka based in B19) to £2,136 (Kunda Group based in B15).
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 B5 by posting a job with HaMuch and we will send it to extension builders in B5.
"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
"RSJ installation" - BIRMINGHAM
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| 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 West Bromwich | £29 | £227 |
| Install An RSJ near Halesowen | £29 | £227 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Sandwell | £29 | £229 |
| Install An RSJ near Tipton | £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 - £17,267

Two storey extension - £87,651

Build a timber frame extension - £25,767

Build a swimming pool - £80,767

Single storey extension - £50,344

Side return extension - £38,881

Install an RSJ - £1,967

Outbuilding - £9,767

Build a Mansard loft conversion - £51,767

Loft conversion - £31,568

Build a kitchen extension - £41,767

Hip to gable loft conversion - £41,767

Granny annexe - £86,767

Garden office - £9,767

Convert a Garage - £15,767

Garage - £18,267

Build a flat roof extension - £21,767

Build a dormer loft conversion - £41,767

Concrete foundations - £6,017

Convert a bungalow loft - £28,767

Convert a basement - £34,881