We send your job to ALL Colwyn Bay extension builders
Available extension builders in Colwyn Bay reply
Select your affordable Colwyn Bay extension builder
S ROBERTS ROOFING are here to help customers who need an Extension Builder in Colwyn Bay. We offer a competitive rate to complete all your extensio...
, LL28
Relax... you have found a reliable extension builder in Colwyn Bay. UK Leisure Living Ltd is a friendly and reliable company based in Colwyn Bay wh...
Need an Extension Builder in Colwyn Bay? Chris's Roofing & Property Maintenance has been helping local clients (20 mile radius) with their extensio...
Robert Wilson
Wood floor services is a trusted extension builder serving customers in Colwyn Bay and the surrounding area. Contact us to today to get a competit...
From £86,416
John Foster
Octagon Construction Ltd is a trusted extension builder serving customers in Colwyn Bay and the surrounding area. Contact us to today to get a comp...

Building a granny annexe ranges from £86,416 (Octagon Construction Ltd based in LL18) to £86,832 (Wood floor services based in Ll18), 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 Colwyn Bay by posting a job with HaMuch. We will send it to extension builders in Colwyn Bay who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Colwyn Bay | £28 | £211 |
| Granny Annexe near Llandudno | £28 | £211 |
| Granny Annexe near Conway | £28 | £211 |
| Granny Annexe near Conwy | £28 | £211 |
| Granny Annexe near Rhyl | £28 | £209 |
| Granny Annexe near Prestatyn | £29 | £213 |
| Granny Annexe near Flintshire | £33 | £224 |
| Granny Annexe near Heswall | £30 | £213 |
| Granny Annexe near Wirral | £31 | £219 |
| Granny Annexe near Connah's Quay | £33 | £229 |
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 - £17,116

Two storey extension - £87,424

Build a timber frame extension - £25,616

Build a swimming pool - £80,616

Single storey extension - £47,320

Side return extension - £37,180

Install an RSJ - £1,816

Outbuilding - £9,616

Build a Mansard loft conversion - £51,616

Loft conversion - £30,150

Build a kitchen extension - £41,616

Hip to gable loft conversion - £41,616

Granny annexe - £86,616

Garden office - £9,616

Convert a Garage - £15,616

Garage - £18,116

Build a flat roof extension - £21,616

Build a dormer loft conversion - £41,616

Concrete foundations - £5,866

Convert a bungalow loft - £28,616

Convert a basement - £33,180