From £17,372
Need an Extension Builder in NP44? P.D.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £16,700
Very reliable honest and hard working guarantee all work clean and tidy first class work
From £17,380
Relax... you have found a reliable extension builder in NP44. A M I Construction is a friendly and reliable company based in NP44 who consider no j...
From £17,228
Neil Causon & Son is an established and experienced local extension builder in NP44. Please contact us for a free, no obligation quote and competit...
From £17,324
Need an Extension Builder in NP44? Mucha Construcion has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
From £17,116
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in NP44. No obligation free quote...
From £17,284
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in NP44. No obligation free quotes and many hap...
From £17,292
T Porter Buiding is an established and experienced local extension builder in NP44. Please contact us for a free, no obligation quote and competiti...
From £17,132
Relax... you have found a reliable extension builder in NP44. Charles Marshall Contracting Ltd is a friendly and reliable company based in NP44 who...
From £17,260
Sharif General Builder is an established and experienced local extension builder in NP44. Please contact us for a free, no obligation quote and com...

Underpinning ranges from £16,700 (A.Gaddarn Builders based in NP11) to £17,380 (A M I Construction based in NP26), 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 NP44 by posting a job with HaMuch and we will send it to extension builders in NP44.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Cwmbran | £43 | £219 |
| Underpin A Building near Risca | £32 | £218 |
| Underpin A Building near Newport | £41 | £233 |
| Underpin A Building near Pontypool | £30 | £210 |
| Underpin A Building near Caerphilly | £33 | £208 |
| Underpin A Building near Ebbw Vale | £30 | £217 |
| Underpin A Building near Tredegar | £30 | £217 |
| Underpin A Building near Cardiff | £34 | £219 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Church Village | £34 | £214 |
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 - £17,209

Two storey extension - £87,563

Build a timber frame extension - £25,709

Build a swimming pool - £80,709

Single storey extension - £49,176

Side return extension - £38,224

Install an RSJ - £1,909

Outbuilding - £9,709

Build a Mansard loft conversion - £51,709

Loft conversion - £31,020

Build a kitchen extension - £41,709

Hip to gable loft conversion - £41,709

Granny annexe - £86,709

Garden office - £9,709

Convert a Garage - £15,709

Garage - £18,209

Build a flat roof extension - £21,709

Build a dormer loft conversion - £41,709

Concrete foundations - £5,959

Convert a bungalow loft - £28,709

Convert a basement - £34,224