From £17,396
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,348
Need to find an Extension Builder near you for all your extension buildering work?
ANWEN CONSTRUCTION provides a local, trusted extension b...
From £17,420
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,324
Experienced extension builder ready to quote for your work. AW Building Projects North East Ltd is the best extension builder in DL17. No obligatio...
From £17,260
Need an Extension Builder in DL17? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...
From £17,236
Need an Extension Builder in DL17? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,468
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,564
Croft-Hill Building & Joinery is a trusted extension builder serving customers in DL17 and the surrounding area. Contact us to today to get a compe...
From £17,604
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in DL17. Please contact us for a free, no obligation quote and c...

Underpinning ranges from £17,236 (Northern Roofline Solutions based in DL14) to £17,764 (Heritage NE Ltd based in DL17), 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 DL17 by posting a job with HaMuch and we will send it to extension builders in DL17.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Spennymoor | £38 | £248 |
| Underpin A Building near Newton Aycliffe | £39 | £227 |
| Underpin A Building near Bishop Auckland | £39 | £247 |
| Underpin A Building near Durham | £47 | £267 |
| Underpin A Building near Peterlee | £35 | £222 |
| Underpin A Building near Darlington | £60 | £222 |
| Underpin A Building near Stockton-on-Tees | £40 | £226 |
| Underpin A Building near Billingham | £43 | £240 |
| Underpin A Building near Chester-le-Street | £35 | £242 |
| Underpin A Building near Seaham | £34 | £229 |
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 - £17,438

Two storey extension - £87,908

Build a timber frame extension - £25,938

Build a swimming pool - £80,938

Single storey extension - £53,768

Side return extension - £40,807

Install an RSJ - £2,138

Outbuilding - £9,938

Build a Mansard loft conversion - £51,938

Loft conversion - £33,173

Build a kitchen extension - £41,938

Hip to gable loft conversion - £41,938

Granny annexe - £86,938

Garden office - £9,938

Convert a Garage - £15,938

Garage - £18,438

Build a flat roof extension - £21,938

Build a dormer loft conversion - £41,938

Concrete foundations - £6,188

Convert a bungalow loft - £28,938

Convert a basement - £36,807