From £16,796
Ballantine building solutions is an established extension buildering business in Carrickfergus. We come highly recommended and provide competitive ...
From £16,764
Trusted and professional extension builder in Carrickfergus. Experienced in all extension buildering work and keeping within budget and on quote. D...
From £16,884
Designco Ltd is an established extension buildering business in Carrickfergus. We come highly recommended and provide competitive quotes for your w...

Underpinning ranges from £16,764 (DGA based in BT37) to £16,884 (Designco Ltd based in BT36), 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 Carrickfergus by posting a job with HaMuch and we will send it to extension builders in Carrickfergus.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Carrickfergus | £23 | £158 |
| Underpin A Building near Greenisland | £23 | £153 |
| Underpin A Building near Holywood | £23 | £159 |
| Underpin A Building near Bangor | £24 | £183 |
| Underpin A Building near Bangor | £24 | £183 |
| Underpin A Building near Larne | £15 | £122 |
| Underpin A Building near Ballyclare | £20 | £124 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Ballygowan | £24 | £183 |
| Underpin A Building near Comber | £22 | £160 |
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 - £16,815

Two storey extension - £86,972

Build a timber frame extension - £25,315

Build a swimming pool - £80,315

Single storey extension - £41,293

Side return extension - £33,790

Install an RSJ - £1,515

Outbuilding - £9,315

Build a Mansard loft conversion - £51,315

Loft conversion - £27,325

Build a kitchen extension - £41,315

Hip to gable loft conversion - £41,315

Granny annexe - £86,315

Garden office - £9,315

Convert a Garage - £15,315

Garage - £17,815

Build a flat roof extension - £21,315

Build a dormer loft conversion - £41,315

Concrete foundations - £5,565

Convert a bungalow loft - £28,315

Convert a basement - £29,790