From £22,016
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,048
Experienced extension builder ready to quote for your work. Guest & Roberts is the best extension builder in Corwen. No obligation free quotes and ...
From £21,896
Relax... you have found a reliable extension builder in Corwen. L & J BUILDERS is a friendly and reliable company based in Corwen who consider no j...
From £22,584
Relax... you have found a reliable extension builder in Corwen. David Williams General Builder & Maintenance is a friendly and reliable company bas...
From £22,072
DMS Building Services are here to help customers who need an Extension Builder in Corwen. We offer a competitive rate to complete all your extensio...
From £21,720
In the trade since left school(1990),accommodating and reliable,
From £22,016
Experienced extension builder ready to quote for your work. READ CONSTRUCTION HOLDINGS LTD is the best extension builder in Corwen. No obligation f...
From £21,928
Need to find an Extension Builder near you for all your extension buildering work?
Fistral ltd provides a local, trusted extension builderi...
From £21,840
Relax... you have found a reliable extension builder in Corwen. Your Home Made Ltd is a friendly and reliable company based in Corwen who consider ...
From £21,448
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 £22,584 (David Williams General Builder & Maintenance based in LL11), 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 Corwen by posting a job with HaMuch. We'll send it to extension builders in Corwen.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Wrexham | £34 | £263 |
| Build A Flat Roof Extension near Flintshire | £33 | £224 |
| Build A Flat Roof Extension near Wrexham Maelor | £34 | £261 |
| Build A Flat Roof Extension near Vale Royal | £35 | £251 |
| Build A Flat Roof Extension near Hawarden | £33 | £228 |
| Build A Flat Roof Extension near Connah's Quay | £33 | £229 |
| Build A Flat Roof Extension near Rhyl | £28 | £209 |
| Build A Flat Roof Extension near Prestatyn | £29 | £213 |
| Build A Flat Roof Extension near Colwyn Bay | £28 | £211 |
| Build A Flat Roof Extension near Chester | £32 | £220 |
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 - £17,457

Two storey extension - £87,935

Build a timber frame extension - £25,957

Build a swimming pool - £80,957

Single storey extension - £54,136

Side return extension - £41,014

Install an RSJ - £2,157

Outbuilding - £9,957

Build a Mansard loft conversion - £51,957

Loft conversion - £33,345

Build a kitchen extension - £41,957

Hip to gable loft conversion - £41,957

Granny annexe - £86,957

Garden office - £9,957

Convert a Garage - £15,957

Garage - £18,457

Build a flat roof extension - £21,957

Build a dormer loft conversion - £41,957

Concrete foundations - £6,207

Convert a bungalow loft - £28,957

Convert a basement - £37,014