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N W Doyle & Son is a trusted extension builder serving customers in Castlewellan and the surrounding area. Contact us to today to get a competitive...

Underpinning ranges from £17,012 (N W Doyle & Son based in BT24) to £17,012 (N W Doyle & Son based in BT24), 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 Castlewellan by posting a job with HaMuch and we will send it to extension builders in Castlewellan.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Ballynahinch | £19 | £189 |
| Underpin A Building near Banbridge | £29 | £205 |
| Underpin A Building near Saintfield | £23 | £162 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Kilkeel | £28 | £182 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Waringstown | £23 | £167 |
| Underpin A Building near Maghaberry | £31 | £205 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Portaferry | £22 | £164 |
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 - £17,012

Two storey extension - £87,268

Build a timber frame extension - £25,512

Build a swimming pool - £80,512

Single storey extension - £45,240

Side return extension - £36,010

Install an RSJ - £1,712

Outbuilding - £9,512

Build a Mansard loft conversion - £51,512

Loft conversion - £29,175

Build a kitchen extension - £41,512

Hip to gable loft conversion - £41,512

Granny annexe - £86,512

Garden office - £9,512

Convert a Garage - £15,512

Garage - £18,012

Build a flat roof extension - £21,512

Build a dormer loft conversion - £41,512

Concrete foundations - £5,762

Convert a bungalow loft - £28,512

Convert a basement - £32,010