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S ROBERTS ROOFING are here to help customers who need an Extension Builder in Denbigh. We offer a competitive rate to complete all your extension b...
Relax... you have found a reliable extension builder in Denbigh. L & J BUILDERS is a friendly and reliable company based in Denbigh who consider no...
From £21,448
Shaun Davies
We are a company with over 30 years of experience. Who pride ourselves by providing a honest reliable service

A flat roof extension ranges from the cheapest of £21,448 (S A Davies Sustainable Construction Limited based in CH7) to the dearest of £21,896 (L & J BUILDERS based in LL15), 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 Denbigh by posting a job with HaMuch. We'll send it to extension builders in Denbigh.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Rhyl | £28 | £209 |
| Build A Flat Roof Extension near Prestatyn | £29 | £213 |
| Build A Flat Roof Extension near Flintshire | £33 | £224 |
| Build A Flat Roof Extension near Colwyn Bay | £28 | £211 |
| Build A Flat Roof Extension near Connah's Quay | £33 | £229 |
| Build A Flat Roof Extension near Hawarden | £33 | £228 |
| Build A Flat Roof Extension near Heswall | £30 | £213 |
| Build A Flat Roof Extension near Conwy | £28 | £211 |
| Build A Flat Roof Extension near Conway | £28 | £211 |
| Build A Flat Roof Extension near Vale Royal | £35 | £251 |
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 - £17,100

Two storey extension - £87,400

Build a timber frame extension - £25,600

Build a swimming pool - £80,600

Single storey extension - £47,000

Side return extension - £37,000

Install an RSJ - £1,800

Outbuilding - £9,600

Build a Mansard loft conversion - £51,600

Loft conversion - £30,000

Build a kitchen extension - £41,600

Hip to gable loft conversion - £41,600

Granny annexe - £86,600

Garden office - £9,600

Convert a Garage - £15,600

Garage - £18,100

Build a flat roof extension - £21,600

Build a dormer loft conversion - £41,600

Concrete foundations - £5,850

Convert a bungalow loft - £28,600

Convert a basement - £33,000