From £19,580
Silicone Render System Ltd is a plastering company based in Porthcawl, with over 20 years’ experience in the plastering trade. W...
From £17,332
Experienced extension builder ready to quote for your work. WH Builders is the best extension builder in Cornelly. No obligation free quotes and ma...
From £17,076
Relax... you have found a reliable extension builder in Cornelly. Cwtch Property Developments is a friendly and reliable company based in Cornelly ...
From £17,332
Need an Extension Builder in Cornelly? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering j...
From £17,348
SS BUILDER are here to help customers who need an Extension Builder in Cornelly. We offer a competitive rate to complete all your extension builder...
From £17,452
Trusted and professional extension builder in Cornelly. Experienced in all extension buildering work and keeping within budget and on quote. Comple...
From £17,300
Scorpion Windows LTD is a trusted extension builder serving customers in Cornelly and the surrounding area. Contact us to today to get a competitiv...
From £17,364
Need an Extension Builder in Cornelly? SP Property Maintenance has been helping local clients (20 mile radius) with their extension buildering jobs...
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 £17,476
Trusted and professional extension builder in Cornelly. Experienced in all extension buildering work and keeping within budget and on quote. HALL &...

Underpinning ranges from £17,004 (Price Builders based in CF71) to £19,580 (Silicone Rendering Systems Ltd based in CF36), 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 Cornelly by posting a job with HaMuch and we will send it to extension builders in Cornelly.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Pyle | £34 | £262 |
| Underpin A Building near Porthcawl | £33 | £252 |
| Underpin A Building near Bridgend | £32 | £200 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Neath | £30 | £225 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Vale of Glamorgan | £29 | £217 |
| Underpin A Building near Swansea | £29 | £229 |
| 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 - £17,526

Two storey extension - £88,040

Build a timber frame extension - £26,026

Build a swimming pool - £81,026

Single storey extension - £55,528

Side return extension - £41,797

Install an RSJ - £2,226

Outbuilding - £10,026

Build a Mansard loft conversion - £52,026

Loft conversion - £33,998

Build a kitchen extension - £42,026

Hip to gable loft conversion - £42,026

Granny annexe - £87,026

Garden office - £10,026

Convert a Garage - £16,026

Garage - £18,526

Build a flat roof extension - £22,026

Build a dormer loft conversion - £42,026

Concrete foundations - £6,276

Convert a bungalow loft - £29,026

Convert a basement - £37,797