From £17,844
Need to find an Extension Builder near you for all your extension buildering work?
JHM Property Services Ltd provides a local, trusted exte...
From £17,412
Oliver Wild Ltd is an established extension buildering business in S12. We come highly recommended and provide competitive quotes for your work.
From £17,596
MRP Design And Build Limited is an established extension buildering business in S12. We come highly recommended and provide competitive quotes for ...
From £17,844
Trusted and professional extension builder in S12. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joinery...
From £17,892
Need to find an Extension Builder near you for all your extension buildering work?
C.J.I Property Maintenance provides a local, trusted ext...
From £17,668
Milestone Builders is an established extension buildering business in S12. We come highly recommended and provide competitive quotes for your work....
From £17,812
Whitshaw Builders LTD is an established and experienced local extension builder in S12. Please contact us for a free, no obligation quote and compe...
From £17,364
Trusted and professional extension builder in S12. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONSTRU...
From £17,380
Home Hero is a trusted extension builder serving customers in S12 and the surrounding area. Contact us to today to get a competitive quote for exte...
From £17,660
Sheffield basedFamily run businessBuilt on recommendationFollow our journey

Underpinning ranges from £17,364 (MGG CONSTRUCTION LTD based in S21) to £17,892 (C.J.I Property Maintenance based in S8), 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 S12 by posting a job with HaMuch and we will send it to extension builders in S12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Sheffield | £30 | £246 |
| Underpin A Building near Dronfield | £31 | £253 |
| Underpin A Building near Rotherham | £29 | £226 |
| Underpin A Building near Wickersley | £29 | £224 |
| Underpin A Building near Chesterfield | £29 | £225 |
| Underpin A Building near Worksop | £29 | £233 |
| Underpin A Building near Barnsley | £27 | £210 |
| Underpin A Building near Mansfield Woodhouse | £29 | £227 |
| Underpin A Building near Sutton-in-Ashfield | £28 | £231 |
| Underpin A Building near Doncaster | £26 | £208 |
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 - £17,647

Two storey extension - £88,221

Build a timber frame extension - £26,147

Build a swimming pool - £81,147

Single storey extension - £57,944

Side return extension - £43,156

Install an RSJ - £2,347

Outbuilding - £10,147

Build a Mansard loft conversion - £52,147

Loft conversion - £35,130

Build a kitchen extension - £42,147

Hip to gable loft conversion - £42,147

Granny annexe - £87,147

Garden office - £10,147

Convert a Garage - £16,147

Garage - £18,647

Build a flat roof extension - £22,147

Build a dormer loft conversion - £42,147

Concrete foundations - £6,397

Convert a bungalow loft - £29,147

Convert a basement - £39,156