From £1,880
Need an Extension Builder in BB6? NOBLETT BUILDING SERVICES has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £1,928
Lonsdale Construction is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get a competitive qu...
From £2,048
Darren Gaynor is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get a competitive quote for ...
From £1,824
WM Brickwork & Pointing are here to help customers who need an Extension Builder in BB6. We offer a competitive rate to complete all your extension...
From £1,824
Garage Conversions by Joe Hanlon is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get a com...
From £1,984
Need to find an Extension Builder near you for all your extension buildering work?
D Parker Design & Build provides a local, trusted extens...
From £1,896
Techbuild Construction North West Ltd is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get ...
From £1,920
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,912
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,008
Need to find an Extension Builder near you for all your extension buildering work?
J. Grimshaw provides a local, trusted extension builderi...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BB6 it ranges from £1,824 (WM Brickwork & Pointing based in BB1) to £2,048 (Darren Gaynor based in BB5).
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 BB6 by posting a job with HaMuch and we will send it to extension builders in BB6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Accrington | £33 | £245 |
| Install An RSJ near Blackburn | £34 | £247 |
| Install An RSJ near Burnley | £29 | £219 |
| Install An RSJ near Darwen | £34 | £253 |
| Install An RSJ near Rawtenstall | £31 | £230 |
| Install An RSJ near Nelson | £27 | £214 |
| Install An RSJ near Bamber Bridge | £30 | £217 |
| Install An RSJ near Chorley | £31 | £222 |
| Install An RSJ near Preston | £30 | £219 |
| Install An RSJ near Fulwood | £31 | £217 |
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 - £17,222

Two storey extension - £87,584

Build a timber frame extension - £25,722

Build a swimming pool - £80,722

Single storey extension - £49,448

Side return extension - £38,377

Install an RSJ - £1,922

Outbuilding - £9,722

Build a Mansard loft conversion - £51,722

Loft conversion - £31,148

Build a kitchen extension - £41,722

Hip to gable loft conversion - £41,722

Granny annexe - £86,722

Garden office - £9,722

Convert a Garage - £15,722

Garage - £18,222

Build a flat roof extension - £21,722

Build a dormer loft conversion - £41,722

Concrete foundations - £5,972

Convert a bungalow loft - £28,722

Convert a basement - £34,377