From £9,880
Relax... you have found a reliable extension builder in NP20. A M I Construction is a friendly and reliable company based in NP20 who consider no j...
From £9,896
Barlam Drylining Ltd are here to help customers who need an Extension Builder in NP20. We offer a competitive rate to complete all your extension b...
From £9,872
Need an Extension Builder in NP20? P.D.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £9,200
Very reliable honest and hard working guarantee all work clean and tidy first class work
From £9,944
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,296
N J Laity & Son & Grandson's are here to help customers who need an Extension Builder in NP20. We offer a competitive rate to complete all your ext...
From £9,840
MOORLAND DESIGN & BUILD LTD are here to help customers who need an Extension Builder in NP20. We offer a competitive rate to complete all your exte...
From £9,728
Neil Causon & Son is an established and experienced local extension builder in NP20. Please contact us for a free, no obligation quote and competit...
From £9,824
Need an Extension Builder in NP20? Mucha Construcion has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
From £9,920
Relax... you have found a reliable extension builder in NP20. RD Pope Construction is a friendly and reliable company based in NP20 who consider no...

Outbuilding costs in NP20 range from the cheapest of £9,200 (A.Gaddarn Builders based in NP11) to the dearest of £10,296 (N J Laity & Son & Grandson's based in BS10), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in NP20 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Newport | £41 | £233 |
| Outbuilding near Cwmbran | £43 | £219 |
| Outbuilding near Risca | £32 | £218 |
| Outbuilding near Pontypool | £30 | £210 |
| Outbuilding near Caerphilly | £33 | £208 |
| Outbuilding near Cardiff | £34 | £219 |
| Outbuilding near Clevedon | £32 | £243 |
| Outbuilding near Portishead | £33 | £247 |
| Outbuilding near Penarth | £35 | £218 |
| Outbuilding 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 - £17,340

Two storey extension - £87,760

Build a timber frame extension - £25,840

Build a swimming pool - £80,840

Single storey extension - £51,800

Side return extension - £39,700

Install an RSJ - £2,040

Outbuilding - £9,840

Build a Mansard loft conversion - £51,840

Loft conversion - £32,250

Build a kitchen extension - £41,840

Hip to gable loft conversion - £41,840

Granny annexe - £86,840

Garden office - £9,840

Convert a Garage - £15,840

Garage - £18,340

Build a flat roof extension - £21,840

Build a dormer loft conversion - £41,840

Concrete foundations - £6,090

Convert a bungalow loft - £28,840

Convert a basement - £35,700