Need to find an Extension Builder near you for all your extension buildering work?
PARTRIDGE - WILSON BUILDERS provides a local, trusted ex...
D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in NP4. Please contact us for a free, no obligation quote and c...
Need to find an Extension Builder near you for all your extension buildering work?
A B CONSTRUCTION provides a local, trusted extension bui...
OWEN BROTHERS CONSTRUCTION LTD are here to help customers who need an Extension Builder in NP4. We offer a competitive rate to complete all your ex...
Our building services company JSP Carpentry & Building Services has 15 years of experience in the industry. Since then, we have been helping custom...
From £21,608
Relax... you have found a reliable extension builder in NP4. HEDLYN BUILDING CONTRACTORS is a friendly and reliable company based in NP4 who consi...

A flat roof extension ranges from the cheapest of £21,568 (D BENDON CONSTRUCTION LTD based in NP4) to the dearest of £21,984 (PARTRIDGE - WILSON BUILDERS based in NP44), 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 NP4 by posting a job with HaMuch. We'll send it to extension builders in NP4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Pontypool | £30 | £210 |
| Build A Flat Roof Extension near Cwmbran | £43 | £219 |
| Build A Flat Roof Extension near Risca | £32 | £218 |
| Build A Flat Roof Extension near Ebbw Vale | £30 | £217 |
| Build A Flat Roof Extension near Newport | £41 | £233 |
| Build A Flat Roof Extension near Tredegar | £30 | £217 |
| Build A Flat Roof Extension near Caerphilly | £33 | £208 |
| Build A Flat Roof Extension near Merthyr Tydfil | £33 | £220 |
| Build A Flat Roof Extension near Pontypridd | £33 | £211 |
| 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 - £17,245

Two storey extension - £87,618

Build a timber frame extension - £25,745

Build a swimming pool - £80,745

Single storey extension - £49,907

Side return extension - £38,635

Install an RSJ - £1,945

Outbuilding - £9,745

Build a Mansard loft conversion - £51,745

Loft conversion - £31,363

Build a kitchen extension - £41,745

Hip to gable loft conversion - £41,745

Granny annexe - £86,745

Garden office - £9,745

Convert a Garage - £15,745

Garage - £18,245

Build a flat roof extension - £21,745

Build a dormer loft conversion - £41,745

Concrete foundations - £5,995

Convert a bungalow loft - £28,745

Convert a basement - £34,635