From £17,116
CHANDER CONSTRUCTION LIMITED is an established and experienced local extension builder in NP22. Please contact us for a free, no obligation quote a...
From £17,372
Need an Extension Builder in NP22? P.D.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £16,916
Trusted and professional extension builder in NP22. Experienced in all extension buildering work and keeping within budget and on quote. M2 Buildin...
From £17,300
Need an Extension Builder in NP22? MG3Design has been helping local clients (20 mile radius) with their extension buildering jobs for many years. G...
From £17,148
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,324
Need an Extension Builder in NP22? FORMWORK CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,444
Trusted and professional extension builder in NP22. Experienced in all extension buildering work and keeping within budget and on quote. BIs Group ...
From £17,300
Need to find an Extension Builder near you for all your extension buildering work?
A B CONSTRUCTION provides a local, trusted extension bui...
From £17,396
Barlam Drylining Ltd are here to help customers who need an Extension Builder in NP22. We offer a competitive rate to complete all your extension b...
From £17,348
Relax... you have found a reliable extension builder in NP22. Professional Concrete Solutions is a friendly and reliable company based in NP22 who ...

Underpinning ranges from £16,916 (M2 Building & Landscaping based in NP13) to £17,444 (BIs Group based in NP12), 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 NP22 by posting a job with HaMuch and we will send it to extension builders in NP22.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Tredegar | £24 | £195 |
| Underpin A Building near Ebbw Vale | £24 | £195 |
| Underpin A Building near Merthyr Tydfil | £28 | £187 |
| Underpin A Building near Aberdare | £28 | £186 |
| Underpin A Building near Pontypool | £26 | £183 |
| Underpin A Building near Rhondda, Cynon, Taff | £27 | £183 |
| Underpin A Building near Pontypridd | £29 | £184 |
| Underpin A Building near Risca | £27 | £185 |
| Underpin A Building near Cwmbran | £39 | £190 |
| Underpin A Building near Rhondda | £27 | £183 |
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 - £17,266

Two storey extension - £87,650

Build a timber frame extension - £25,766

Build a swimming pool - £80,766

Single storey extension - £50,328

Side return extension - £38,872

Install an RSJ - £1,966

Outbuilding - £9,766

Build a Mansard loft conversion - £51,766

Loft conversion - £31,560

Build a kitchen extension - £41,766

Hip to gable loft conversion - £41,766

Granny annexe - £86,766

Garden office - £9,766

Convert a Garage - £15,766

Garage - £18,266

Build a flat roof extension - £21,766

Build a dormer loft conversion - £41,766

Concrete foundations - £6,016

Convert a bungalow loft - £28,766

Convert a basement - £34,872