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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 £86,448
Shaun Davies
We are a company with over 30 years of experience. Who pride ourselves by providing a honest reliable service

Building a granny annexe ranges from £86,448 (S A Davies Sustainable Construction Limited based in CH7) to £86,896 (L & J BUILDERS based in LL15), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Denbigh by posting a job with HaMuch. We will send it to extension builders in Denbigh who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Rhyl | £28 | £209 |
| Granny Annexe near Prestatyn | £29 | £213 |
| Granny Annexe near Flintshire | £33 | £224 |
| Granny Annexe near Colwyn Bay | £28 | £211 |
| Granny Annexe near Connah's Quay | £33 | £229 |
| Granny Annexe near Hawarden | £33 | £228 |
| Granny Annexe near Heswall | £30 | £213 |
| Granny Annexe near Conwy | £28 | £211 |
| Granny Annexe near Conway | £28 | £211 |
| Granny Annexe 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