From £1,888
S G Building Services is an established extension buildering business in BB18. We come highly recommended and provide competitive quotes for your w...
From £1,896
Need an Extension Builder in BB18? G MCGUIGAN BUILDING CONTR LTD has been helping local clients (20 mile radius) with their extension buildering jo...
From £2,192
Need an Extension Builder in BB18? CPS has been helping local clients (20 mile radius) with their extension buildering jobs for many years. Get a q...
From £1,800
Trusted and professional extension builder in BB18. Experienced in all extension buildering work and keeping within budget and on quote. FTL Buildi...
From £1,704
Need to find an Extension Builder near you for all your extension buildering work?
PRO - BUILD provides a local, trusted extension builderi...
From £1,936
A M BUILDING MAINTAINANCE is an established extension buildering business in BB18. We come highly recommended and provide competitive quotes for yo...
From £2,120
RJ BUILDERS CONSTRUCTION - Loft Conversions and Plastering specialists
From £1,776
Need to find an Extension Builder near you for all your extension buildering work?
Ken Thomas Property Repairs provides a local, trusted ex...
From £1,888
Experienced extension builder ready to quote for your work. Garage Door Services Lancashire is the best extension builder in BB18. No obligation fr...
From £1,816
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BB18 it ranges from £1,704 (PRO - BUILD based in BB8) to £2,192 (CPS based in BB9).
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 BB18 by posting a job with HaMuch and we will send it to extension builders in BB18.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Nelson | £27 | £214 |
| Install An RSJ near Burnley | £29 | £219 |
| Install An RSJ near Keighley | £30 | £226 |
| Install An RSJ near Accrington | £33 | £245 |
| Install An RSJ near Calderdale | £33 | £253 |
| Install An RSJ near Bingley | £30 | £226 |
| Install An RSJ near Rawtenstall | £31 | £230 |
| Install An RSJ near Shipley | £29 | £224 |
| Install An RSJ near Blackburn | £34 | £247 |
| Install An RSJ near Halifax | £32 | £243 |
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 - £17,202

Two storey extension - £87,552

Build a timber frame extension - £25,702

Build a swimming pool - £80,702

Single storey extension - £49,032

Side return extension - £38,143

Install an RSJ - £1,902

Outbuilding - £9,702

Build a Mansard loft conversion - £51,702

Loft conversion - £30,953

Build a kitchen extension - £41,702

Hip to gable loft conversion - £41,702

Granny annexe - £86,702

Garden office - £9,702

Convert a Garage - £15,702

Garage - £18,202

Build a flat roof extension - £21,702

Build a dormer loft conversion - £41,702

Concrete foundations - £5,952

Convert a bungalow loft - £28,702

Convert a basement - £34,143