From £2,200
Urban Select Construction is a trusted extension builder serving customers in West Lancashire and the surrounding area. Contact us to today to get ...
From £1,960
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £2,168
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £2,000
Higher End Construction Limited is an established extension buildering business in West Lancashire. We come highly recommended and provide competit...
From £1,672
Trusted and professional extension builder in West Lancashire. Experienced in all extension buildering work and keeping within budget and on quote....
From £2,224
Red Avex Ltd are here to help customers who need an Extension Builder in West Lancashire. We offer a competitive rate to complete all your extensio...
From £1,408
Need an Extension Builder in West Lancashire? MND Building Services Ltd has been helping local clients (20 mile radius) with their extension builde...
From £2,128
D P Construction Limited are here to help customers who need an Extension Builder in West Lancashire. We offer a competitive rate to complete all y...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in West Lancashire it ranges from £1,408 (MND Building Services Ltd based in WN6) to £2,224 (Red Avex Ltd based in L10).
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 West Lancashire by posting a job with HaMuch and we will send it to extension builders in West Lancashire.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near West Lancashire | £28 | £203 |
| Install An RSJ near Ormskirk | £29 | £206 |
| Install An RSJ near Skelmersdale | £29 | £211 |
| Install An RSJ near Maghull | £33 | £219 |
| Install An RSJ near Orrell | £29 | £214 |
| Install An RSJ near Kirkby | £31 | £223 |
| Install An RSJ near Southport | £27 | £198 |
| Install An RSJ near Formby | £23 | £162 |
| Install An RSJ near Sefton | £33 | £219 |
| Install An RSJ near Crosby | £33 | £222 |
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 - £17,174

Two storey extension - £87,510

Build a timber frame extension - £25,674

Build a swimming pool - £80,674

Single storey extension - £48,472

Side return extension - £37,828

Install an RSJ - £1,874

Outbuilding - £9,674

Build a Mansard loft conversion - £51,674

Loft conversion - £30,690

Build a kitchen extension - £41,674

Hip to gable loft conversion - £41,674

Granny annexe - £86,674

Garden office - £9,674

Convert a Garage - £15,674

Garage - £18,174

Build a flat roof extension - £21,674

Build a dormer loft conversion - £41,674

Concrete foundations - £5,924

Convert a bungalow loft - £28,674

Convert a basement - £33,828