Have Faith Plasterers is an established and experienced local extension builder in WS1. Please contact us for a free, no obligation quote and compe...
Zygi&Bob Builders is an established extension buildering business in WS1. We come highly recommended and provide competitive quotes for your work.<...
Adam Williams
Need to find an Extension Builder near you for all your extension buildering work?
Willbuild provides a local, trusted extension buildering...
Experienced extension builder ready to quote for your work. S B Evans Bricklaying Contractor Ltd is the best extension builder in WS1. No obligatio...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Official Shopfront & Shutters Ltd
Need to find an Extension Builder near you for all your extension buildering work?
Official Shopfront & Shutters Ltd provides a local, trus...
Need to find an Extension Builder near you for all your extension buildering work?
B S Builders provides a local, trusted extension builder...
Steve Dean
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £3,200
Terry Bedford
Trusted and professional extension builder in WS1. Experienced in all extension buildering work and keeping within budget and on quote. TG Building...
From £2,032
A.S. BUILDING is a trusted extension builder serving customers in WS1 and the surrounding area. Contact us to today to get a competitive quote for ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WS1 it ranges from £1,496 (Saxonworld Ltd based in WS9) to £3,200 (TG Building Services & Son based in B71).
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 WS1 by posting a job with HaMuch and we will send it to extension builders in WS1.
"Install an RSJ. For bow window replacement" - WS5, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Walsall | £29 | £226 |
| Install An RSJ near Wednesbury | £29 | £227 |
| Install An RSJ near Darlaston | £29 | £226 |
| Install An RSJ near Bloxwich | £28 | £225 |
| Install An RSJ near Sandwell | £29 | £228 |
| Install An RSJ near Willenhall | £29 | £225 |
| Install An RSJ near West Bromwich | £28 | £225 |
| Install An RSJ near Bilston | £29 | £225 |
| Install An RSJ near Tipton | £29 | £226 |
| Install An RSJ near Brownhills | £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 - £17,435

Two storey extension - £87,903

Build a timber frame extension - £25,935

Build a swimming pool - £80,935

Single storey extension - £53,704

Side return extension - £40,771

Install an RSJ - £2,135

Outbuilding - £9,935

Build a Mansard loft conversion - £51,935

Loft conversion - £33,143

Build a kitchen extension - £41,935

Hip to gable loft conversion - £41,935

Granny annexe - £86,935

Garden office - £9,935

Convert a Garage - £15,935

Garage - £18,435

Build a flat roof extension - £21,935

Build a dormer loft conversion - £41,935

Concrete foundations - £6,185

Convert a bungalow loft - £28,935

Convert a basement - £36,771