From £1,840
Renka is an established and experienced local extension builder in Birmingham. Please contact us for a free, no obligation quote and competitive ra...
From £2,072
Relax... you have found a reliable extension builder in Birmingham. BORDO Design is a friendly and reliable company based in Birmingham who conside...
From £1,904
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in Birmingham. No obligation free quotes a...
From £1,896
Need an Extension Builder in Birmingham? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering job...
From £1,904
Trusted and professional extension builder in Birmingham. Experienced in all extension buildering work and keeping within budget and on quote. Prob...
From £1,896
Laurence Cox is an established and experienced local extension builder in Birmingham. Please contact us for a free, no obligation quote and competi...
From £2,120
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in Birmingham. No obligation free quotes and man...
From £2,136
Kunda Group is a trusted extension builder serving customers in Birmingham and the surrounding area. Contact us to today to get a competitive quote...
From £2,184
Birmingham, B6
Brickfast Builders is an established extension buildering business in Birmingham. We come highly recommended and provide competitive quotes for you...
From £1,912
Mountainview Construction is an established and experienced local extension builder in Birmingham. Please contact us for a free, no obligation quot...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Birmingham it ranges from £1,840 (Renka based in B19) to £2,184 (Brickfast Builders based in B6).
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 Birmingham by posting a job with HaMuch and we will send it to extension builders in Birmingham.
"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 Sutton Coldfield | £29 | £228 |
| Install An RSJ near Sandwell | £29 | £229 |
| 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 Wednesbury | £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 - £17,286

Two storey extension - £87,680

Build a timber frame extension - £25,786

Build a swimming pool - £80,786

Single storey extension - £50,728

Side return extension - £39,097

Install an RSJ - £1,986

Outbuilding - £9,786

Build a Mansard loft conversion - £51,786

Loft conversion - £31,748

Build a kitchen extension - £41,786

Hip to gable loft conversion - £41,786

Granny annexe - £86,786

Garden office - £9,786

Convert a Garage - £15,786

Garage - £18,286

Build a flat roof extension - £21,786

Build a dormer loft conversion - £41,786

Concrete foundations - £6,036

Convert a bungalow loft - £28,786

Convert a basement - £35,097