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Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
S ROBERTS ROOFING are here to help customers who need an Extension Builder in St Asaph. We offer a competitive rate to complete all your extension ...
Robert Wilson
Wood floor services is a trusted extension builder serving customers in St Asaph and the surrounding area. Contact us to today to get a competitiv...
From £30,930
John Foster
Octagon Construction Ltd is a trusted extension builder serving customers in St Asaph and the surrounding area. Contact us to today to get a compet...
From £31,290
Shaun Davies
We are a company with over 30 years of experience. Who pride ourselves by providing a honest reliable service

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in St Asaph by posting a job with HaMuch and we will send it to extension builders in St Asaph.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Rhyl | £28 | £209 |
| Convert A Basement near Prestatyn | £29 | £213 |
| Convert A Basement near Colwyn Bay | £28 | £211 |
| Convert A Basement near Flintshire | £33 | £224 |
| Convert A Basement near Heswall | £30 | £213 |
| Convert A Basement near Connah's Quay | £33 | £229 |
| Convert A Basement near Llandudno | £28 | £211 |
| Convert A Basement near Conway | £28 | £211 |
| Convert A Basement near Conwy | £28 | £211 |
| Convert A Basement near Wirral | £31 | £219 |
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 - £17,105

Two storey extension - £87,407

Build a timber frame extension - £25,605

Build a swimming pool - £80,605

Single storey extension - £47,096

Side return extension - £37,054

Install an RSJ - £1,805

Outbuilding - £9,605

Build a Mansard loft conversion - £51,605

Loft conversion - £30,045

Build a kitchen extension - £41,605

Hip to gable loft conversion - £41,605

Granny annexe - £86,605

Garden office - £9,605

Convert a Garage - £15,605

Garage - £18,105

Build a flat roof extension - £21,605

Build a dormer loft conversion - £41,605

Concrete foundations - £5,855

Convert a bungalow loft - £28,605

Convert a basement - £33,054