From £2,424
Trusted and professional extension builder in KA1. Experienced in all extension buildering work and keeping within budget and on quote. Ayrshire Jo...
From £2,312
Trusted and professional extension builder in KA1. Experienced in all extension buildering work and keeping within budget and on quote. Murdoch Con...
From £2,136
Finn Joinery & Construction is a trusted extension builder serving customers in KA1 and the surrounding area. Contact us to today to get a competit...
From £2,120
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in KA1 and the surrounding area. Contact ...
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 £2,136
H & C JOINERS & BUILDERS LTD is an established and experienced local extension builder in KA1. Please contact us for a free, no obligation quote an...
From £2,232
Col-In the Builder is a trusted extension builder serving customers in KA1 and the surrounding area. Contact us to today to get a competitive quote...
From £1,944
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
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 £2,192
Relax... you have found a reliable extension builder in KA1. Adrian K Wilson Roofing Specialist is a friendly and reliable company based in KA1 who...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in KA1 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 KA1 by posting a job with HaMuch and we will send it to extension builders in KA1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kilmarnock | £30 | £222 |
| Install An RSJ near Irvine | £32 | £235 |
| Install An RSJ near Troon | £30 | £229 |
| Install An RSJ near Prestwick | £21 | £161 |
| Install An RSJ near Kilwinning | £29 | £220 |
| Install An RSJ near North Ayrshire | £29 | £218 |
| Install An RSJ near South Ayrshire | £22 | £161 |
| Install An RSJ near Ayr | £22 | £161 |
| Install An RSJ near Newton Mearns | £30 | £224 |
| Install An RSJ near Barrhead | £31 | £223 |
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 - £17,550

Two storey extension - £88,074

Build a timber frame extension - £26,050

Build a swimming pool - £81,050

Single storey extension - £55,992

Side return extension - £42,058

Install an RSJ - £2,250

Outbuilding - £10,050

Build a Mansard loft conversion - £52,050

Loft conversion - £34,215

Build a kitchen extension - £42,050

Hip to gable loft conversion - £42,050

Granny annexe - £87,050

Garden office - £10,050

Convert a Garage - £16,050

Garage - £18,550

Build a flat roof extension - £22,050

Build a dormer loft conversion - £42,050

Concrete foundations - £6,300

Convert a bungalow loft - £29,050

Convert a basement - £38,058