From £2,144
Need an Extension Builder in B44? D&J Advanced Builders has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
From £1,768
Dave Mattock is an established and experienced local extension builder in B44. Please contact us for a free, no obligation quote and competitive ra...
From £2,040
Relax... you have found a reliable extension builder in B44. MD Services is a friendly and reliable company based in B44 who consider no job as too...
From £2,328
Relax... you have found a reliable extension builder in B44. Sanwood is a friendly and reliable company based in B44 who consider no job as too big...
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 £1,912
Add Surveyors is a trusted extension builder serving customers in B44 and the surrounding area. Contact us to today to get a competitive quote for ...
From £1,968
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,048
Fast response for all your extension buildering needs around B44
Artisan Construction (B'ham) Limited are an establis...
From £1,856
Guild Building Solutions Ltd is a well established, reliable and trustworthy company with over 25 years' experience. We are based in Sutton Coldfie...
From £2,184
Brickfast Builders is an established extension buildering business in B44. We come highly recommended and provide competitive quotes for your work....

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B44 it ranges from £1,768 (Dave Mattock based in B44) to £2,328 (Sanwood based in B73).
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 B44 by posting a job with HaMuch and we will send it to extension builders in B44.
"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 Sutton Coldfield | £29 | £228 |
| Install An RSJ near Birmingham | £29 | £227 |
| Install An RSJ near Smethwick | £29 | £226 |
| Install An RSJ near Walsall | £29 | £226 |
| Install An RSJ near West Bromwich | £29 | £227 |
| Install An RSJ near Sandwell | £29 | £229 |
| Install An RSJ near Wednesbury | £29 | £227 |
| Install An RSJ near Darlaston | £29 | £226 |
| Install An RSJ near Oldbury | £29 | £227 |
| Install An RSJ near Bloxwich | £28 | £225 |
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 - £17,303

Two storey extension - £87,705

Build a timber frame extension - £25,803

Build a swimming pool - £80,803

Single storey extension - £51,064

Side return extension - £39,286

Install an RSJ - £2,003

Outbuilding - £9,803

Build a Mansard loft conversion - £51,803

Loft conversion - £31,905

Build a kitchen extension - £41,803

Hip to gable loft conversion - £41,803

Granny annexe - £86,803

Garden office - £9,803

Convert a Garage - £15,803

Garage - £18,303

Build a flat roof extension - £21,803

Build a dormer loft conversion - £41,803

Concrete foundations - £6,053

Convert a bungalow loft - £28,803

Convert a basement - £35,286