From £2,184
Need to find an Extension Builder near you for all your extension buildering work?
Atwal Building Services Ltd provides a local, trusted ex...
From £1,960
Build Ora Construction is an established and experienced local extension builder in B20. Please contact us for a free, no obligation quote and com...
From £2,016
Our building services company Chadha Constructions Limited was established in March 2021, but have been providing professional, trustworthy buildin...
From £1,784
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,184
Brickfast Builders is an established extension buildering business in B20. We come highly recommended and provide competitive quotes for your work....
From £1,840
Renka is an established and experienced local extension builder in B20. Please contact us for a free, no obligation quote and competitive rates. Co...
From £1,896
Need an Extension Builder in B20? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering jobs for m...
From £1,904
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in B20. No obligation free quotes and many...
From £2,040
Relax... you have found a reliable extension builder in B20. MD Services is a friendly and reliable company based in B20 who consider no job as too...
From £1,904
Trusted and professional extension builder in B20. 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 B20 it ranges from £1,784 (Parkfield Building Services Ltd based in B6) to £2,184 (Atwal Building Services Ltd based in B20).
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 B20 by posting a job with HaMuch and we will send it to extension builders in B20.
"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 West Bromwich | £29 | £227 |
| Install An RSJ near Sandwell | £29 | £229 |
| Install An RSJ near Oldbury | £29 | £227 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Wednesbury | £29 | £227 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near Walsall | £29 | £226 |
| 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 - £17,271

Two storey extension - £87,657

Build a timber frame extension - £25,771

Build a swimming pool - £80,771

Single storey extension - £50,424

Side return extension - £38,926

Install an RSJ - £1,971

Outbuilding - £9,771

Build a Mansard loft conversion - £51,771

Loft conversion - £31,605

Build a kitchen extension - £41,771

Hip to gable loft conversion - £41,771

Granny annexe - £86,771

Garden office - £9,771

Convert a Garage - £15,771

Garage - £18,271

Build a flat roof extension - £21,771

Build a dormer loft conversion - £41,771

Concrete foundations - £6,021

Convert a bungalow loft - £28,771

Convert a basement - £34,926