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 £2,232
Col-In the Builder is a trusted extension builder serving customers in KA13 and the surrounding area. Contact us to today to get a competitive quot...
From £2,120
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in KA13 and the surrounding area. Contact...
From £2,192
Relax... you have found a reliable extension builder in KA13. Adrian K Wilson Roofing Specialist is a friendly and reliable company based in KA13 w...
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 KA13. Please contact us for a free, no obligation quote a...
From £2,424
Trusted and professional extension builder in KA13. Experienced in all extension buildering work and keeping within budget and on quote. Ayrshire J...
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 KA13. Experienced in all extension buildering work and keeping within budget and on quote. Murdoch Co...
From £2,336
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 KA13 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 KA13 by posting a job with HaMuch and we will send it to extension builders in KA13.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kilwinning | £33 | £249 |
| Install An RSJ near North Ayrshire | £33 | £250 |
| Install An RSJ near Irvine | £34 | £250 |
| Install An RSJ near Troon | £32 | £241 |
| Install An RSJ near Kilmarnock | £36 | £271 |
| Install An RSJ near Prestwick | £24 | £180 |
| Install An RSJ near South Ayrshire | £25 | £190 |
| Install An RSJ near Johnstone | £52 | £381 |
| Install An RSJ near Ayr | £25 | £190 |
| Install An RSJ near Renfrewshire | £54 | £398 |
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 - £17,570

Two storey extension - £88,104

Build a timber frame extension - £26,070

Build a swimming pool - £81,070

Single storey extension - £56,392

Side return extension - £42,283

Install an RSJ - £2,270

Outbuilding - £10,070

Build a Mansard loft conversion - £52,070

Loft conversion - £34,403

Build a kitchen extension - £42,070

Hip to gable loft conversion - £42,070

Granny annexe - £87,070

Garden office - £10,070

Convert a Garage - £16,070

Garage - £18,570

Build a flat roof extension - £22,070

Build a dormer loft conversion - £42,070

Concrete foundations - £6,320

Convert a bungalow loft - £29,070

Convert a basement - £38,283