From £2,360
Need to find an Extension Builder near you for all your extension buildering work?
Shire Design & Build Ltd. provides a local, trusted exte...
From £1,944
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
From £2,104
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 Ayr. Please contact us for a free, no obligation quote an...
From £2,120
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in Ayr and the surrounding area. Contact ...
From £2,424
Trusted and professional extension builder in Ayr. Experienced in all extension buildering work and keeping within budget and on quote. Ayrshire Jo...
From £2,232
Col-In the Builder is a trusted extension builder serving customers in Ayr and the surrounding area. Contact us to today to get a competitive quote...
From £2,312
Trusted and professional extension builder in Ayr. Experienced in all extension buildering work and keeping within budget and on quote. Murdoch Con...
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 £2,488
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 Ayr 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 Ayr by posting a job with HaMuch and we will send it to extension builders in Ayr.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Ayr | £25 | £190 |
| Install An RSJ near South Ayrshire | £25 | £190 |
| Install An RSJ near Prestwick | £24 | £180 |
| Install An RSJ near Troon | £32 | £241 |
| Install An RSJ near Kilmarnock | £36 | £271 |
| Install An RSJ near Irvine | £34 | £250 |
| Install An RSJ near North Ayrshire | £33 | £250 |
| Install An RSJ near Kilwinning | £33 | £249 |
| Install An RSJ near Barrhead | £35 | £257 |
| Install An RSJ near Newton Mearns | £34 | £262 |
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 - £17,563

Two storey extension - £88,095

Build a timber frame extension - £26,063

Build a swimming pool - £81,063

Single storey extension - £56,264

Side return extension - £42,211

Install an RSJ - £2,263

Outbuilding - £10,063

Build a Mansard loft conversion - £52,063

Loft conversion - £34,343

Build a kitchen extension - £42,063

Hip to gable loft conversion - £42,063

Granny annexe - £87,063

Garden office - £10,063

Convert a Garage - £16,063

Garage - £18,563

Build a flat roof extension - £22,063

Build a dormer loft conversion - £42,063

Concrete foundations - £6,313

Convert a bungalow loft - £29,063

Convert a basement - £38,211