From £2,056
S.G. Joinery & Building is a well-established company setup over 15 years ago and working in the Poulton-le-Fylde , Preston ,Garstang and ...
From £1,920
Conway Construction Ltd is an established extension buildering business in Thornton. We come highly recommended and provide competitive quotes for ...
From £2,032
Need an Extension Builder in Thornton? John Towers Builders has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £2,096
Need to find an Extension Builder near you for all your extension buildering work?
J.L Noblet provides a local, trusted extension builderin...
From £1,968
Relax... you have found a reliable extension builder in Thornton. Crown Construction Lancs Ltd is a friendly and reliable company based in Thornton...
From £1,728
Need an Extension Builder in Thornton? Darren Finney Builders has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £1,752
Comprehensive Property Services is an established and experienced local extension builder in Thornton. Please contact us for a free, no obligation ...
From £2,200
Trusted and professional extension builder in Thornton. Experienced in all extension buildering work and keeping within budget and on quote. O. Mor...
From £1,960
Attention to detail. Member of safe trader. Recommendations References available.
From £1,912
Smedley Construction Ltd is a trusted extension builder serving customers in Thornton and the surrounding area. Contact us to today to get a compet...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Thornton it ranges from £1,728 (Darren Finney Builders based in PR25) to £2,200 (O. Morris Construction based in PR5).
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 Thornton by posting a job with HaMuch and we will send it to extension builders in Thornton.
"RSJ installation" - FY3, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Thornton | £29 | £211 |
| Install An RSJ near Fleetwood | £28 | £206 |
| Install An RSJ near Blackpool | £29 | £209 |
| Install An RSJ near Lytham St Annes | £28 | £206 |
| Install An RSJ near Fulwood | £31 | £217 |
| Install An RSJ near Penwortham | £30 | £218 |
| Install An RSJ near Preston | £30 | £218 |
| Install An RSJ near Lancaster | £25 | £211 |
| Install An RSJ near Morecambe | £25 | £212 |
| Install An RSJ near Southport | £27 | £198 |
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 - £17,262

Two storey extension - £87,644

Build a timber frame extension - £25,762

Build a swimming pool - £80,762

Single storey extension - £50,248

Side return extension - £38,827

Install an RSJ - £1,962

Outbuilding - £9,762

Build a Mansard loft conversion - £51,762

Loft conversion - £31,523

Build a kitchen extension - £41,762

Hip to gable loft conversion - £41,762

Granny annexe - £86,762

Garden office - £9,762

Convert a Garage - £15,762

Garage - £18,262

Build a flat roof extension - £21,762

Build a dormer loft conversion - £41,762

Concrete foundations - £6,012

Convert a bungalow loft - £28,762

Convert a basement - £34,827