From £17,476
Trusted and professional extension builder in Neath. Experienced in all extension buildering work and keeping within budget and on quote. HALL & HA...
From £17,260
Marin Hughes General Builders is a trusted extension builder serving customers in Neath and the surrounding area. Contact us to today to get a comp...
From £17,436
A Room at the Top are here to help customers who need an Extension Builder in Neath. We offer a competitive rate to complete all your extension bui...
From £17,348
SS BUILDER are here to help customers who need an Extension Builder in Neath. We offer a competitive rate to complete all your extension buildering...
From £17,332
Need an Extension Builder in Neath? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,132
Karina Lane Construction Ltd are here to help customers who need an Extension Builder in Neath. We offer a competitive rate to complete all your ex...
From £17,052
Need an Extension Builder in Neath? Calon Construction Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £17,212
Trusted and professional extension builder in Neath. Experienced in all extension buildering work and keeping within budget and on quote. Masterbui...
From £17,276
KAW Developments is a trusted extension builder serving customers in Neath and the surrounding area. Contact us to today to get a competitive quote...
From £17,076
Homekare Building Services Ltd is an established and experienced local extension builder in Neath. Please contact us for a free, no obligation quot...

Underpinning ranges from £17,052 (Calon Construction Ltd based in SA7) to £17,476 (HALL & HARRIS CONSTRUCTION based in SA11), 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 Neath by posting a job with HaMuch and we will send it to extension builders in Neath.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Neath | £30 | £225 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Swansea | £29 | £229 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Pyle | £34 | £262 |
| Underpin A Building near Gorseinon | £29 | £228 |
| Underpin A Building near Porthcawl | £33 | £252 |
| Underpin A Building near Bridgend | £32 | £200 |
| Underpin A Building near Llanelli | £29 | £231 |
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 - £17,260

Two storey extension - £87,640

Build a timber frame extension - £25,760

Build a swimming pool - £80,760

Single storey extension - £50,200

Side return extension - £38,800

Install an RSJ - £1,960

Outbuilding - £9,760

Build a Mansard loft conversion - £51,760

Loft conversion - £31,500

Build a kitchen extension - £41,760

Hip to gable loft conversion - £41,760

Granny annexe - £86,760

Garden office - £9,760

Convert a Garage - £15,760

Garage - £18,260

Build a flat roof extension - £21,760

Build a dormer loft conversion - £41,760

Concrete foundations - £6,010

Convert a bungalow loft - £28,760

Convert a basement - £34,800