From £17,420
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in Irvine and the surrounding area. Conta...
From £17,532
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 £17,812
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,436
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 £17,788
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,724
Trusted and professional extension builder in Irvine. Experienced in all extension buildering work and keeping within budget and on quote. Ayrshire...
From £17,492
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 £17,244
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
From £17,612
Trusted and professional extension builder in Irvine. Experienced in all extension buildering work and keeping within budget and on quote. Murdoch ...
From £17,404
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £17,244 (ABG Resin Bond & Landscaping Ltd based in KA6) to £17,812 (Unibuild Property Services based in KA20), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home 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 |
|---|---|---|
| Underpin A Building near Irvine | £34 | £250 |
| Underpin A Building near Kilwinning | £33 | £249 |
| Underpin A Building near Troon | £32 | £241 |
| Underpin A Building near Kilmarnock | £36 | £271 |
| Underpin A Building near North Ayrshire | £33 | £250 |
| Underpin A Building near Prestwick | £24 | £180 |
| Underpin A Building near South Ayrshire | £25 | £190 |
| Underpin A Building near Ayr | £25 | £190 |
| Underpin A Building near Barrhead | £35 | £257 |
| Underpin A Building 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