From £1,912
Mountainview Construction is an established and experienced local extension builder in B15. Please contact us for a free, no obligation quote and c...
From £2,136
Kunda Group is a trusted extension builder serving customers in B15 and the surrounding area. Contact us to today to get a competitive quote for ex...
From £2,168
Need an Extension Builder in B15? Multiservice K Construction Ltd has been helping local clients (20 mile radius) with their extension buildering j...
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 £2,072
Relax... you have found a reliable extension builder in B15. BORDO Design is a friendly and reliable company based in B15 who consider no job as to...
From £1,904
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in B15. No obligation free quotes and many...
From £1,896
Need an Extension Builder in B15? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering jobs for m...
From £1,896
Laurence Cox is an established and experienced local extension builder in B15. Please contact us for a free, no obligation quote and competitive ra...
From £1,992
Need an Extension Builder in B15? EDEN BUILD LTD has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
From £1,840
Renka is an established and experienced local extension builder in B15. Please contact us for a free, no obligation quote and competitive rates. Co...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B15 it ranges from £1,840 (Renka based in B19) 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 B15 by posting a job with HaMuch and we will send it to extension builders in B15.
"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 | £25 | £197 |
| Install An RSJ near Smethwick | £25 | £195 |
| Install An RSJ near Oldbury | £25 | £196 |
| Install An RSJ near Halesowen | £25 | £197 |
| Install An RSJ near West Bromwich | £25 | £195 |
| Install An RSJ near Rowley Regis | £25 | £196 |
| Install An RSJ near Sandwell | £25 | £196 |
| Install An RSJ near Tipton | £25 | £196 |
| Install An RSJ near Solihull | £24 | £194 |
| Install An RSJ near Sutton Coldfield | £25 | £202 |
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 - £17,312

Two storey extension - £87,718

Build a timber frame extension - £25,812

Build a swimming pool - £80,812

Single storey extension - £51,240

Side return extension - £39,385

Install an RSJ - £2,012

Outbuilding - £9,812

Build a Mansard loft conversion - £51,812

Loft conversion - £31,988

Build a kitchen extension - £41,812

Hip to gable loft conversion - £41,812

Granny annexe - £86,812

Garden office - £9,812

Convert a Garage - £15,812

Garage - £18,312

Build a flat roof extension - £21,812

Build a dormer loft conversion - £41,812

Concrete foundations - £6,062

Convert a bungalow loft - £28,812

Convert a basement - £35,385