From £1,912
Trusted and professional extension builder in Coniston. Experienced in all extension buildering work and keeping within budget and on quote. J R S ...
From £2,104
Relax... you have found a reliable extension builder in Coniston. Wolfe Design & Build is a friendly and reliable company based in Coniston who con...
From £1,848
MARK TAYLOR CONSTRUCTION LTD is an established extension buildering business in Coniston. We come highly recommended and provide competitive quotes...
From £1,776
Experienced extension builder ready to quote for your work. SIMPSON CONSTRUCTION is the best extension builder in Coniston. No obligation free quot...
From £1,696
ADAM READ TRADITIONAL BUILDING is an established and experienced local extension builder in Coniston. Please contact us for a free, no obligation q...
From £2,032
Relax... you have found a reliable extension builder in Coniston. STEPHEN FELLER (BUILDER) is a friendly and reliable company based in Coniston who...
From £2,680
MIKE CROWE BUILDING & CONSTRUC is an established and experienced local extension builder in Coniston. Please contact us for a free, no obligation q...
From £1,760
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,088
Need to find an Extension Builder near you for all your extension buildering work?
Absolute Build provides a local, trusted extension build...
From £2,584
Use our depth of knowledge in design, build, renovation and property development to realise your true one-off home.Our track record in residential ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Coniston it ranges from £1,696 (ADAM READ TRADITIONAL BUILDING based in LA18) to £2,680 (MIKE CROWE BUILDING & CONSTRUC based in LA12).
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 Coniston by posting a job with HaMuch and we will send it to extension builders in Coniston.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kendal | £28 | £236 |
| Install An RSJ near Barrow-in-Furness | £25 | £204 |
| Install An RSJ near Morecambe | £25 | £212 |
| Install An RSJ near Whitehaven | £22 | £221 |
| Install An RSJ near Lancaster | £25 | £211 |
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 - £17,348

Two storey extension - £87,772

Build a timber frame extension - £25,848

Build a swimming pool - £80,848

Single storey extension - £51,960

Side return extension - £39,790

Install an RSJ - £2,048

Outbuilding - £9,848

Build a Mansard loft conversion - £51,848

Loft conversion - £32,325

Build a kitchen extension - £41,848

Hip to gable loft conversion - £41,848

Granny annexe - £86,848

Garden office - £9,848

Convert a Garage - £15,848

Garage - £18,348

Build a flat roof extension - £21,848

Build a dormer loft conversion - £41,848

Concrete foundations - £6,098

Convert a bungalow loft - £28,848

Convert a basement - £35,790