From £17,124
Garden and Building Solutions is an established and experienced local extension builder in NN29. Please contact us for a free, no obligation quote ...
From £17,148
Need to find an Extension Builder near you for all your extension buildering work?
Shirley Ceramics provides a local, trusted extension bui...
From £17,500
Experienced extension builder ready to quote for your work. Home Ryte Construction is the best extension builder in NN29. No obligation free quotes...
From £18,892
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,460
Trusted and professional extension builder in NN29. Experienced in all extension buildering work and keeping within budget and on quote. Captain St...
From £17,196
Experienced extension builder ready to quote for your work. L & D CONSTRUCTION SERVICE is the best extension builder in NN29. No obligation free qu...
From £17,484
Experienced extension builder ready to quote for your work. MINERAL STAR CONSTRUCTION LTD is the best extension builder in NN29. No obligation free...
From £17,540
Experienced extension builder ready to quote for your work. KMR CONSTRUCTION is the best extension builder in NN29. No obligation free quotes and m...
From £17,044
Need to find an Extension Builder near you for all your extension buildering work?
A G Hicks Building Services provides a local, trusted ex...

Underpinning ranges from £17,044 (A G Hicks Building Services based in NN3) to £18,892 (STRANDOR ROOFING LTD based in NN6), 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 NN29 by posting a job with HaMuch and we will send it to extension builders in NN29.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Wellingborough | £39 | £251 |
| Underpin A Building near Rushden | £34 | £231 |
| Underpin A Building near Northampton | £35 | £239 |
| Underpin A Building near Kettering | £34 | £237 |
| Underpin A Building near South Bedfordshire | £45 | £278 |
| Underpin A Building near Bedford | £45 | £278 |
| Underpin A Building near Kempston | £44 | £273 |
| Underpin A Building near Milton Keynes | £39 | £263 |
| Underpin A Building near Corby | £30 | £214 |
| Underpin A Building near St Neots | £51 | £318 |
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 - £17,477

Two storey extension - £87,965

Build a timber frame extension - £25,977

Build a swimming pool - £80,977

Single storey extension - £54,536

Side return extension - £41,239

Install an RSJ - £2,177

Outbuilding - £9,977

Build a Mansard loft conversion - £51,977

Loft conversion - £33,533

Build a kitchen extension - £41,977

Hip to gable loft conversion - £41,977

Granny annexe - £86,977

Garden office - £9,977

Convert a Garage - £15,977

Garage - £18,477

Build a flat roof extension - £21,977

Build a dormer loft conversion - £41,977

Concrete foundations - £6,227

Convert a bungalow loft - £28,977

Convert a basement - £37,239