From £2,120
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in Small Heath. No obligation free quotes and ma...
From £2,184
Need to find an Extension Builder near you for all your extension buildering work?
Dayfos Properties Ltd provides a local, trusted extensio...
From £2,184
Fletcher's Building & Maintenance are a family owned business that understands, in order to achieve our continued success our customers and the...
From £1,896
Laurence Cox is an established and experienced local extension builder in Small Heath. Please contact us for a free, no obligation quote and compet...
From £1,904
Trusted and professional extension builder in Small Heath. Experienced in all extension buildering work and keeping within budget and on quote. Pro...
From £2,184
Trusted and professional extension builder in Small Heath. Experienced in all extension buildering work and keeping within budget and on quote. 2nd...
From £2,072
Relax... you have found a reliable extension builder in Small Heath. BORDO Design is a friendly and reliable company based in Small Heath who consi...
From £1,904
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in Small Heath. No obligation free quotes ...
From £1,840
Renka is an established and experienced local extension builder in Small Heath. Please contact us for a free, no obligation quote and competitive r...
From £1,896
Need an Extension Builder in Small Heath? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering jo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Small Heath it ranges from £1,840 (Renka based in B19) to £2,184 (Dayfos Properties Ltd based in B11).
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 Small Heath by posting a job with HaMuch and we will send it to extension builders in Small Heath.
"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 | £29 | £227 |
| Install An RSJ near Smethwick | £29 | £226 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Oldbury | £29 | £227 |
| Install An RSJ near West Bromwich | £29 | £227 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Halesowen | £29 | £227 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near Sandwell | £29 | £229 |
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 - £17,318

Two storey extension - £87,728

Build a timber frame extension - £25,818

Build a swimming pool - £80,818

Single storey extension - £51,368

Side return extension - £39,457

Install an RSJ - £2,018

Outbuilding - £9,818

Build a Mansard loft conversion - £51,818

Loft conversion - £32,048

Build a kitchen extension - £41,818

Hip to gable loft conversion - £41,818

Granny annexe - £86,818

Garden office - £9,818

Convert a Garage - £15,818

Garage - £18,318

Build a flat roof extension - £21,818

Build a dormer loft conversion - £41,818

Concrete foundations - £6,068

Convert a bungalow loft - £28,818

Convert a basement - £35,457