T Porter Buiding is an established and experienced local extension builder in NP19. Please contact us for a free, no obligation quote and competiti...
Sharif General Builder is an established and experienced local extension builder in NP19. Please contact us for a free, no obligation quote and com...
Relax... you have found a reliable extension builder in NP19. Ace Paving is a friendly and reliable company based in NP19 who consider no job as to...
Need to find an Extension Builder near you for all your extension buildering work?
GML Builders provides a local, trusted extension builder...
From £21,992
Relax... you have found a reliable extension builder in NP19. RKD Maintenance & Construction is a friendly and reliable company based in NP19 who c...
From £21,712
PMW Property Services Ltd is an established and experienced local extension builder in NP19. Please contact us for a free, no obligation quote and ...
From £21,856
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,304
Sam Atkins
Experienced extension builder ready to quote for your work. Carter Thomas Construction Ltd is the best extension builder in NP19. No obligation fre...
From £21,752
Experienced extension builder ready to quote for your work. Kingsley Developments is the best extension builder in NP19. No obligation free quotes ...
From £21,920
Kingsley Developments is an established and experienced local extension builder in NP19. Please contact us for a free, no obligation quote and comp...

A flat roof extension ranges from the cheapest of £21,664 (GML Builders based in NP10) to the dearest of £22,304 (Carter Thomas Construction Ltd based in NP18), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in NP19 by posting a job with HaMuch. We'll send it to extension builders in NP19.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Newport | £41 | £233 |
| Build A Flat Roof Extension near Cwmbran | £43 | £219 |
| Build A Flat Roof Extension near Risca | £32 | £218 |
| Build A Flat Roof Extension near Pontypool | £30 | £210 |
| Build A Flat Roof Extension near Caerphilly | £33 | £208 |
| Build A Flat Roof Extension near Clevedon | £32 | £243 |
| Build A Flat Roof Extension near Portishead | £33 | £247 |
| Build A Flat Roof Extension near Cardiff | £34 | £219 |
| Build A Flat Roof Extension near Penarth | £35 | £219 |
| Build A Flat Roof Extension 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 - £17,366

Two storey extension - £87,800

Build a timber frame extension - £25,866

Build a swimming pool - £80,866

Single storey extension - £52,328

Side return extension - £39,997

Install an RSJ - £2,066

Outbuilding - £9,866

Build a Mansard loft conversion - £51,866

Loft conversion - £32,498

Build a kitchen extension - £41,866

Hip to gable loft conversion - £41,866

Granny annexe - £86,866

Garden office - £9,866

Convert a Garage - £15,866

Garage - £18,366

Build a flat roof extension - £21,866

Build a dormer loft conversion - £41,866

Concrete foundations - £6,116

Convert a bungalow loft - £28,866

Convert a basement - £35,997