From £18,412
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
From £17,028
Experienced extension builder ready to quote for your work. KIETH GRAY ROOFING & BUILDING is the best extension builder in Seaton Carew. No obligat...
From £17,308
Trusted and professional extension builder in Seaton Carew. Experienced in all extension buildering work and keeping within budget and on quote. DH...
From £17,484
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,436
Building Craft Ltd is an established extension buildering business in Seaton Carew. We come highly recommended and provide competitive quotes for y...
From £17,332
LJP Roofing are here to help customers who need an Extension Builder in Seaton Carew. We offer a competitive rate to complete all your extension bu...
From £17,244
Trusted and professional extension builder in Seaton Carew. Experienced in all extension buildering work and keeping within budget and on quote. Em...
From £17,380
Relax... you have found a reliable extension builder in Seaton Carew. Under Pressure is a friendly and reliable company based in Seaton Carew who c...
From £17,260
Trusted and professional extension builder in Seaton Carew. Experienced in all extension buildering work and keeping within budget and on quote. D ...
From £17,628
Need an Extension Builder in Seaton Carew? Holvey Home Improvements has been helping local clients (20 mile radius) with their extension buildering...

Underpinning ranges from £17,028 (KIETH GRAY ROOFING & BUILDING based in TS24) to £18,412 (Radici Construction North East Ltd based in DH1), 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 Seaton Carew by posting a job with HaMuch and we will send it to extension builders in Seaton Carew.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Hartlepool | £40 | £236 |
| Underpin A Building near Billingham | £44 | £242 |
| Underpin A Building near Middlesbrough | £43 | £236 |
| Underpin A Building near Eston | £42 | £241 |
| Underpin A Building near Redcar | £42 | £240 |
| Underpin A Building near Redcar & Cleveland | £43 | £254 |
| Underpin A Building near Stockton-on-Tees | £41 | £228 |
| Underpin A Building near Peterlee | £36 | £230 |
| Underpin A Building near Thornaby-on-Tees | £42 | £231 |
| Underpin A Building near Ingleby Barwick | £41 | £228 |
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 - £17,451

Two storey extension - £87,927

Build a timber frame extension - £25,951

Build a swimming pool - £80,951

Single storey extension - £54,024

Side return extension - £40,951

Install an RSJ - £2,151

Outbuilding - £9,951

Build a Mansard loft conversion - £51,951

Loft conversion - £33,293

Build a kitchen extension - £41,951

Hip to gable loft conversion - £41,951

Granny annexe - £86,951

Garden office - £9,951

Convert a Garage - £15,951

Garage - £18,451

Build a flat roof extension - £21,951

Build a dormer loft conversion - £41,951

Concrete foundations - £6,201

Convert a bungalow loft - £28,951

Convert a basement - £36,951