From £16,996
Trusted and professional extension builder in Bushmills. Experienced in all extension buildering work and keeping within budget and on quote. purdy...
From £17,108
Need an Extension Builder in Bushmills? SF Carpentry has been helping local clients (20 mile radius) with their extension buildering jobs for many ...

Underpinning ranges from £16,996 (Purdy build based in bt53) to £17,108 (SF Carpentry based in BT51), 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 Bushmills by posting a job with HaMuch and we will send it to extension builders in Bushmills.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Ballymoney | £21 | £187 |
| Underpin A Building near Coleraine | £23 | £201 |
| Underpin A Building near Dungiven | £22 | £190 |
| Underpin A Building near Londonderry | £24 | £190 |
| Underpin A Building near Strathfoyle | £24 | £190 |
| Underpin A Building near Larne | £15 | £122 |
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 - £17,052

Two storey extension - £87,328

Build a timber frame extension - £25,552

Build a swimming pool - £80,552

Single storey extension - £46,040

Side return extension - £36,460

Install an RSJ - £1,752

Outbuilding - £9,552

Build a Mansard loft conversion - £51,552

Loft conversion - £29,550

Build a kitchen extension - £41,552

Hip to gable loft conversion - £41,552

Granny annexe - £86,552

Garden office - £9,552

Convert a Garage - £15,552

Garage - £18,052

Build a flat roof extension - £21,552

Build a dormer loft conversion - £41,552

Concrete foundations - £5,802

Convert a bungalow loft - £28,552

Convert a basement - £32,460