AJ Home Improvements is an established extension buildering business in B73. We come highly recommended and provide competitive quotes for your wor...
Brickfast Builders is an established extension buildering business in B73. We come highly recommended and provide competitive quotes for your work....
Lloyd Clarke
Need to find an Extension Builder near you for all your extension buildering work?
LC BUILDING SERVICES provides a local, trusted extension...
Relax... you have found a reliable extension builder in B73. MD Services is a friendly and reliable company based in B73 who consider no job as too...
Dave Mattock is an established and experienced local extension builder in B73. Please contact us for a free, no obligation quote and competitive ra...
Need an Extension Builder in B73? D&J Advanced Builders has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
Need to find an Extension Builder near you for all your extension buildering work?
James Leonnard Builders provides a local, trusted extens...
Experienced extension builder ready to quote for your work. SELF BUILD is the best extension builder in B73. No obligation free quotes and many hap...
Sanj Sandhu
Relax... you have found a reliable extension builder in B73. Sanwood is a friendly and reliable company based in B73 who consider no job as too big...
Guild Building Solutions Ltd is a well established, reliable and trustworthy company with over 25 years' experience. We are based in Sutton Coldfie...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B73 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 B73 by posting a job with HaMuch and we will send it to extension builders in B73.
"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 | £28 | £226 |
| Install An RSJ near Walsall | £29 | £226 |
| Install An RSJ near Smethwick | £28 | £225 |
| Install An RSJ near West Bromwich | £28 | £225 |
| Install An RSJ near Sandwell | £29 | £228 |
| Install An RSJ near Brownhills | £28 | £225 |
| Install An RSJ near Wednesbury | £29 | £227 |
| Install An RSJ near Bloxwich | £28 | £225 |
| Install An RSJ near Darlaston | £29 | £226 |
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 - £17,321

Two storey extension - £87,731

Build a timber frame extension - £25,821

Build a swimming pool - £80,821

Single storey extension - £51,416

Side return extension - £39,484

Install an RSJ - £2,021

Outbuilding - £9,821

Build a Mansard loft conversion - £51,821

Loft conversion - £32,070

Build a kitchen extension - £41,821

Hip to gable loft conversion - £41,821

Granny annexe - £86,821

Garden office - £9,821

Convert a Garage - £15,821

Garage - £18,321

Build a flat roof extension - £21,821

Build a dormer loft conversion - £41,821

Concrete foundations - £6,071

Convert a bungalow loft - £28,821

Convert a basement - £35,484