From £16,932
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on
From £16,796
Been in business as 18 years alway put clients first and never had any combacks
From £16,996
Trusted and professional extension builder in Cullybackey. Experienced in all extension buildering work and keeping within budget and on quote. pur...
From £17,404
FJS CONTRACTS LTD are here to help customers who need an Extension Builder in Cullybackey. We offer a competitive rate to complete all your extensi...
From £17,108
Need an Extension Builder in Cullybackey? SF Carpentry has been helping local clients (20 mile radius) with their extension buildering jobs for man...
From £17,516
Seamus Mcmullan building and joinery is an established extension buildering business in Cullybackey. We come highly recommended and provide competi...

Underpinning ranges from £16,796 (Oakmore Contracts based in BT45) to £17,516 (Seamus Mcmullan building and joinery based in BT45), 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 Cullybackey by posting a job with HaMuch and we will send it to extension builders in Cullybackey.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Magherafelt | £30 | £238 |
| Underpin A Building near Ballymoney | £21 | £187 |
| Underpin A Building near Ballyclare | £20 | £124 |
| Underpin A Building near Coleraine | £23 | £201 |
| Underpin A Building near Crumlin | £26 | £194 |
| Underpin A Building near Larne | £15 | £122 |
| Underpin A Building near Dungiven | £22 | £190 |
| Underpin A Building near Greenisland | £23 | £153 |
| Underpin A Building near Carrickfergus | £23 | £158 |
| Underpin A Building near Belfast | £23 | £161 |
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 - £17,125

Two storey extension - £87,438

Build a timber frame extension - £25,625

Build a swimming pool - £80,625

Single storey extension - £47,507

Side return extension - £37,285

Install an RSJ - £1,825

Outbuilding - £9,625

Build a Mansard loft conversion - £51,625

Loft conversion - £30,238

Build a kitchen extension - £41,625

Hip to gable loft conversion - £41,625

Granny annexe - £86,625

Garden office - £9,625

Convert a Garage - £15,625

Garage - £18,125

Build a flat roof extension - £21,625

Build a dormer loft conversion - £41,625

Concrete foundations - £5,875

Convert a bungalow loft - £28,625

Convert a basement - £33,285