From £2,120
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in Irvine and the surrounding area. Conta...
From £2,232
Irvine, KA12
Col-In the Builder is a trusted extension builder serving customers in Irvine and the surrounding area. Contact us to today to get a competitive qu...
From £2,512
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,136
H & C JOINERS & BUILDERS LTD is an established and experienced local extension builder in Irvine. Please contact us for a free, no obligation quote...
From £2,488
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,424
Trusted and professional extension builder in Irvine. Experienced in all extension buildering work and keeping within budget and on quote. Ayrshire...
From £2,192
Relax... you have found a reliable extension builder in Irvine. Adrian K Wilson Roofing Specialist is a friendly and reliable company based in Irvi...
From £1,944
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
From £2,312
Trusted and professional extension builder in Irvine. Experienced in all extension buildering work and keeping within budget and on quote. Murdoch ...
From £2,104
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 Irvine it ranges from £1,944 (ABG Resin Bond & Landscaping Ltd based in KA6) to £2,512 (Unibuild Property Services based in KA20).
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 Irvine by posting a job with HaMuch and we will send it to extension builders in Irvine.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Irvine | £34 | £250 |
| Install An RSJ near Kilwinning | £33 | £249 |
| Install An RSJ near Troon | £32 | £241 |
| Install An RSJ near Kilmarnock | £36 | £271 |
| Install An RSJ near North Ayrshire | £33 | £250 |
| Install An RSJ near Prestwick | £24 | £180 |
| Install An RSJ near South Ayrshire | £25 | £190 |
| Install An RSJ near Ayr | £25 | £190 |
| Install An RSJ near Barrhead | £35 | £257 |
| Install An RSJ near Johnstone | £52 | £381 |
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 - £17,546

Two storey extension - £88,070

Build a timber frame extension - £26,046

Build a swimming pool - £81,046

Single storey extension - £55,928

Side return extension - £42,022

Install an RSJ - £2,246

Outbuilding - £10,046

Build a Mansard loft conversion - £52,046

Loft conversion - £34,185

Build a kitchen extension - £42,046

Hip to gable loft conversion - £42,046

Granny annexe - £87,046

Garden office - £10,046

Convert a Garage - £16,046

Garage - £18,546

Build a flat roof extension - £22,046

Build a dormer loft conversion - £42,046

Concrete foundations - £6,296

Convert a bungalow loft - £29,046

Convert a basement - £38,022