Experienced extension builder ready to quote for your work. S B Evans Bricklaying Contractor Ltd is the best extension builder in WS3. No obligatio...
Adam Williams
Need to find an Extension Builder near you for all your extension buildering work?
Willbuild provides a local, trusted extension buildering...
Zygi&Bob Builders is an established extension buildering business in WS3. We come highly recommended and provide competitive quotes for your work.<...
Empire Builders is an established and experienced local extension builder in WS3. Please contact us for a free, no obligation quote and competitive...
Steve Dean
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,952
Carl Mills
Need an Extension Builder in WS3? C A MILLS BUILDING CONTR LTD has been helping local clients (20 mile radius) with their extension buildering jobs...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WS3 it ranges from £1,496 (Saxonworld Ltd based in WS9) to £2,208 (Empire Builders based in WS6).
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 WS3 by posting a job with HaMuch and we will send it to extension builders in WS3.
"Install an RSJ. For bow window replacement" - WS5, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Bloxwich | £28 | £225 |
| Install An RSJ near Walsall | £29 | £226 |
| Install An RSJ near Brownhills | £28 | £225 |
| Install An RSJ near Willenhall | £29 | £225 |
| Install An RSJ near Darlaston | £29 | £226 |
| Install An RSJ near Wednesbury | £29 | £227 |
| Install An RSJ near Cannock | £28 | £227 |
| Install An RSJ near Burntwood | £29 | £229 |
| Install An RSJ near Bilston | £29 | £225 |
| Install An RSJ near Sandwell | £29 | £228 |
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 - £17,249

Two storey extension - £87,624

Build a timber frame extension - £25,749

Build a swimming pool - £80,749

Single storey extension - £49,987

Side return extension - £38,680

Install an RSJ - £1,949

Outbuilding - £9,749

Build a Mansard loft conversion - £51,749

Loft conversion - £31,400

Build a kitchen extension - £41,749

Hip to gable loft conversion - £41,749

Granny annexe - £86,749

Garden office - £9,749

Convert a Garage - £15,749

Garage - £18,249

Build a flat roof extension - £21,749

Build a dormer loft conversion - £41,749

Concrete foundations - £5,999

Convert a bungalow loft - £28,749

Convert a basement - £34,680