From £16,636
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
From £16,676
Trusted and professional extension builder in Carryduff. Experienced in all extension buildering work and keeping within budget and on quote. Exten...
From £16,868
Relax... you have found a reliable extension builder in Carryduff. SM Plumbing & Heating is a friendly and reliable company based in Carryduff who ...
From £16,836
Trusted and professional extension builder in Carryduff. Experienced in all extension buildering work and keeping within budget and on quote. Belfa...
From £16,884
Relax... you have found a reliable extension builder in Carryduff. Finch Construction NI is a friendly and reliable company based in Carryduff who ...
From £16,900
T.I Building is a trusted extension builder serving customers in Carryduff and the surrounding area. Contact us to today to get a competitive quote...
From £16,884
Designco Ltd is an established extension buildering business in Carryduff. We come highly recommended and provide competitive quotes for your work....
From £16,772
apex pharaoh ltd is a trusted extension builder serving customers in Carryduff and the surrounding area. Contact us to today to get a competitive q...
From £16,796
Ballantine building solutions is an established extension buildering business in Carryduff. We come highly recommended and provide competitive quot...

Underpinning ranges from £16,636 (Mount Oriel Conversions & Extensions based in BT8) to £16,988 (AK Building Services based in BT8), 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 Carryduff by posting a job with HaMuch and we will send it to extension builders in Carryduff.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Saintfield | £23 | £162 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Comber | £22 | £160 |
| Underpin A Building near Ballygowan | £24 | £183 |
| Underpin A Building near Holywood | £23 | £159 |
| Underpin A Building near Ballynahinch | £19 | £189 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Greenisland | £23 | £153 |
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 - £16,824

Two storey extension - £86,986

Build a timber frame extension - £25,324

Build a swimming pool - £80,324

Single storey extension - £41,480

Side return extension - £33,895

Install an RSJ - £1,524

Outbuilding - £9,324

Build a Mansard loft conversion - £51,324

Loft conversion - £27,413

Build a kitchen extension - £41,324

Hip to gable loft conversion - £41,324

Granny annexe - £86,324

Garden office - £9,324

Convert a Garage - £15,324

Garage - £17,824

Build a flat roof extension - £21,324

Build a dormer loft conversion - £41,324

Concrete foundations - £5,574

Convert a bungalow loft - £28,324

Convert a basement - £29,895