From £17,332
Experienced extension builder ready to quote for your work. WH Builders is the best extension builder in Porthcawl. No obligation free quotes and m...
From £17,300
Scorpion Windows LTD is a trusted extension builder serving customers in Porthcawl and the surrounding area. Contact us to today to get a competiti...
From £17,004
Need to find an Extension Builder near you for all your extension buildering work?
Price Builders provides a local, trusted extension build...
From £17,076
Relax... you have found a reliable extension builder in Porthcawl. Cwtch Property Developments is a friendly and reliable company based in Porthcaw...
From £17,332
Need an Extension Builder in Porthcawl? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering ...
From £17,348
SS BUILDER are here to help customers who need an Extension Builder in Porthcawl. We offer a competitive rate to complete all your extension builde...
From £17,452
Trusted and professional extension builder in Porthcawl. Experienced in all extension buildering work and keeping within budget and on quote. Compl...
From £17,364
Need an Extension Builder in Porthcawl? SP Property Maintenance has been helping local clients (20 mile radius) with their extension buildering job...
From £17,236
Relax... you have found a reliable extension builder in Porthcawl. DEAN THOMAS BUILDING is a friendly and reliable company based in Porthcawl who c...
From £17,284
S J S Services (Wales) Ltd is a trusted extension builder serving customers in Porthcawl and the surrounding area. Contact us to today to get a com...

Underpinning ranges from £17,004 (Price Builders based in CF71) to £17,452 (Complete Building Contractors based in CF34), 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 Porthcawl by posting a job with HaMuch and we will send it to extension builders in Porthcawl.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Porthcawl | £33 | £252 |
| Underpin A Building near Pyle | £34 | £262 |
| Underpin A Building near Bridgend | £32 | £200 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Vale of Glamorgan | £29 | £217 |
| Underpin A Building near Neath | £30 | £225 |
| Underpin A Building near Swansea | £29 | £229 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Rhondda | £31 | £206 |
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 - £17,273

Two storey extension - £87,659

Build a timber frame extension - £25,773

Build a swimming pool - £80,773

Single storey extension - £50,456

Side return extension - £38,944

Install an RSJ - £1,973

Outbuilding - £9,773

Build a Mansard loft conversion - £51,773

Loft conversion - £31,620

Build a kitchen extension - £41,773

Hip to gable loft conversion - £41,773

Granny annexe - £86,773

Garden office - £9,773

Convert a Garage - £15,773

Garage - £18,273

Build a flat roof extension - £21,773

Build a dormer loft conversion - £41,773

Concrete foundations - £6,023

Convert a bungalow loft - £28,773

Convert a basement - £34,944