From £17,148
Need an Extension Builder in St Asaph? P WALKER JOINERY & BUILDING has been helping local clients (20 mile radius) with their extension buildering ...
From £17,348
Need to find an Extension Builder near you for all your extension buildering work?
S.L.P Property Maintenance provides a local, trusted ext...
From £17,372
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,076
, LL28
Relax... you have found a reliable extension builder in St Asaph. UK Leisure Living Ltd is a friendly and reliable company based in St Asaph who co...
From £17,300
Need an Extension Builder in St Asaph? Chris's Roofing & Property Maintenance has been helping local clients (20 mile radius) with their extension ...
From £17,380
Danny Anderson Builder is an established extension buildering business in St Asaph. We come highly recommended and provide competitive quotes for y...
From £17,244
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,236
Need an Extension Builder in St Asaph? PK.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £16,892
SJBuild Ltd is an established and experienced local extension builder in St Asaph. Please contact us for a free, no obligation quote and competitiv...
From £17,452
Trusted and professional extension builder in St Asaph. Experienced in all extension buildering work and keeping within budget and on quote. DW Bri...

Underpinning ranges from £16,892 (SJBuild Ltd based in CH63) to £17,452 (DW Brickwork based in CH46), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home 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 |
|---|---|---|
| Underpin A Building near Rhyl | £28 | £209 |
| Underpin A Building near Prestatyn | £29 | £213 |
| Underpin A Building near Colwyn Bay | £28 | £211 |
| Underpin A Building near Flintshire | £33 | £224 |
| Underpin A Building near Heswall | £30 | £213 |
| Underpin A Building near Connah's Quay | £33 | £229 |
| Underpin A Building near Llandudno | £28 | £211 |
| Underpin A Building near Conway | £28 | £211 |
| Underpin A Building near Conwy | £28 | £211 |
| Underpin A Building 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 - £17,245

Two storey extension - £87,617

Build a timber frame extension - £25,745

Build a swimming pool - £80,745

Single storey extension - £49,896

Side return extension - £38,629

Install an RSJ - £1,945

Outbuilding - £9,745

Build a Mansard loft conversion - £51,745

Loft conversion - £31,358

Build a kitchen extension - £41,745

Hip to gable loft conversion - £41,745

Granny annexe - £86,745

Garden office - £9,745

Convert a Garage - £15,745

Garage - £18,245

Build a flat roof extension - £21,745

Build a dormer loft conversion - £41,745

Concrete foundations - £5,995

Convert a bungalow loft - £28,745

Convert a basement - £34,629