From £17,604
Durham, DH1
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in Durham. Please contact us for a free, no obligation quote and...
From £18,412
Durham, DH1
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
From £17,260
Need an Extension Builder in Durham? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs for many y...
From £17,500
Relax... you have found a reliable extension builder in Durham. AA Paving is a friendly and reliable company based in Durham who consider no job as...
From £17,332
LJP Roofing are here to help customers who need an Extension Builder in Durham. We offer a competitive rate to complete all your extension builderi...
From £16,660
Durham, DH6
We provide expert advice on building defects and cost effective environmental friendly solutions throughout the North East of England. Our bu...
From £17,332
Experienced extension builder ready to quote for your work. L F BUILDING & JOINERY is the best extension builder in Durham. No obligation free quot...
From £17,564
Croft-Hill Building & Joinery is a trusted extension builder serving customers in Durham and the surrounding area. Contact us to today to get a com...
From £17,308
Trusted and professional extension builder in Durham. Experienced in all extension buildering work and keeping within budget and on quote. DHB Buil...

Underpinning ranges from £16,660 (Dry Tec based in DH6) 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 Durham by posting a job with HaMuch and we will send it to extension builders in Durham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Durham | £47 | £267 |
| Underpin A Building near Chester-le-Street | £35 | £242 |
| Underpin A Building near Spennymoor | £38 | £248 |
| Underpin A Building near Washington | £33 | £251 |
| Underpin A Building near Sunderland | £33 | £251 |
| Underpin A Building near Stanley | £34 | £242 |
| Underpin A Building near Seaham | £34 | £229 |
| Underpin A Building near Bishop Auckland | £39 | £247 |
| Underpin A Building near Peterlee | £35 | £222 |
| Underpin A Building near Newton Aycliffe | £39 | £227 |
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 - £17,474

Two storey extension - £87,960

Build a timber frame extension - £25,974

Build a swimming pool - £80,974

Single storey extension - £54,472

Side return extension - £41,203

Install an RSJ - £2,174

Outbuilding - £9,974

Build a Mansard loft conversion - £51,974

Loft conversion - £33,503

Build a kitchen extension - £41,974

Hip to gable loft conversion - £41,974

Granny annexe - £86,974

Garden office - £9,974

Convert a Garage - £15,974

Garage - £18,474

Build a flat roof extension - £21,974

Build a dormer loft conversion - £41,974

Concrete foundations - £6,224

Convert a bungalow loft - £28,974

Convert a basement - £37,203