From £17,644
Bailey Construction Services are here to help customers who need an Extension Builder in SO16. We offer a competitive rate to complete all your ext...
From £17,404
Our building services company KT Carpentry & Building Services has been helping customers in Southampton, Winchester, Brockenhurst and Portsmouth b...
From £17,460
Experienced extension builder ready to quote for your work. LMR BUILDING SERVICES LIMITED is the best extension builder in SO16. No obligation free...
From £17,428
Relax... you have found a reliable extension builder in SO16. 1st Oak Building Preservation & Maintenance is a friendly and reliable company based ...
From £17,420
Need to find an Extension Builder near you for all your extension buildering work?
DSH Roofing provides a local, trusted extension builderi...
From £17,580
Experienced extension builder ready to quote for your work. Shay building LTD is the best extension builder in SO16. No obligation free quotes and ...
From £17,484
Need an Extension Builder in SO16? T & S Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many...
From £17,268
Need to find an Extension Builder near you for all your extension buildering work?
Mark Mckie provides a local, trusted extension builderin...
From £17,228
Hestia Trustins LTD are here to help customers who need an Extension Builder in SO16. We offer a competitive rate to complete all your extension bu...
From £17,692
We are a Design and Build company based in Hampshire. Proud of our roots, we try to be the very best in the way we go about our business. Friendly...

Underpinning ranges from £17,228 (Hestia Trustins LTD based in SO14) to £17,692 (AAConcepts based in SO14), 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 SO16 by posting a job with HaMuch and we will send it to extension builders in SO16.
"Underpinning" - SOUTHAMPTON
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Southampton | £30 | £215 |
| Underpin A Building near Eastleigh | £30 | £215 |
| Underpin A Building near Totton | £30 | £216 |
| Underpin A Building near Chandler's Ford | £30 | £216 |
| Underpin A Building near Romsey | £28 | £203 |
| Underpin A Building near Hedge End | £30 | £215 |
| Underpin A Building near Locks Heath | £30 | £213 |
| Underpin A Building near New Forest | £28 | £211 |
| Underpin A Building near Winchester | £31 | £225 |
| Underpin A Building near Fareham | £31 | £217 |
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 - £17,461

Two storey extension - £87,941

Build a timber frame extension - £25,961

Build a swimming pool - £80,961

Single storey extension - £54,216

Side return extension - £41,059

Install an RSJ - £2,161

Outbuilding - £9,961

Build a Mansard loft conversion - £51,961

Loft conversion - £33,383

Build a kitchen extension - £41,961

Hip to gable loft conversion - £41,961

Granny annexe - £86,961

Garden office - £9,961

Convert a Garage - £15,961

Garage - £18,461

Build a flat roof extension - £21,961

Build a dormer loft conversion - £41,961

Concrete foundations - £6,211

Convert a bungalow loft - £28,961

Convert a basement - £37,059