From £17,380
PADMANS BUILDERS is a trusted extension builder serving customers in TN12 and the surrounding area. Contact us to today to get a competitive quote ...
From £17,316
Relax... you have found a reliable extension builder in TN12. JOHN HIGGINS BUILDING is a friendly and reliable company based in TN12 who c...
From £17,508
TJ RALPH BUILDINGS SERVICES is a trusted extension builder serving customers in TN12 and the surrounding area. Contact us to today to get a competi...
From £17,372
DAVID WILLIAMSON CONSTRUCTION is a trusted extension builder serving customers in TN12 and the surrounding area. Contact us to today to get a compe...
From £17,372
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,420
Need to find an Extension Builder near you for all your extension buildering work?
Broardview Construction provides a local, trusted extens...
From £19,996
All my work is top class and I've taken pride in everything I do I will come and hire me
From £17,540
Tunbridge Wells Builders are here to help customers who need an Extension Builder in TN12. We offer a competitive rate to complete all your extensi...
From £17,484
Relax... you have found a reliable extension builder in TN12. ARTBUILD LTD is a friendly and reliable company based in TN12 who consider no job as ...
From £17,332
DS BUILDERS is an established extension buildering business in TN12. We come highly recommended and provide competitive quotes for your work.

Underpinning ranges from £17,316 (JOHN HIGGINS BUILDING based in ME18) to £19,996 (Transform Builders based in TN12), 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 TN12 by posting a job with HaMuch and we will send it to extension builders in TN12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Tonbridge | £33 | £226 |
| Underpin A Building near Maidstone | £36 | £226 |
| Underpin A Building near Tunbridge Wells | £33 | £228 |
| Underpin A Building near Larkfield | £36 | £224 |
| Underpin A Building near Sevenoaks | £34 | £211 |
| Underpin A Building near Rochester | £34 | £220 |
| Underpin A Building near Crowborough | £31 | £225 |
| Underpin A Building near Chatham | £34 | £220 |
| Underpin A Building near Gillingham | £34 | £219 |
| Underpin A Building near Wealden | £30 | £219 |
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 - £17,672

Two storey extension - £88,258

Build a timber frame extension - £26,172

Build a swimming pool - £81,172

Single storey extension - £58,440

Side return extension - £43,435

Install an RSJ - £2,372

Outbuilding - £10,172

Build a Mansard loft conversion - £52,172

Loft conversion - £35,363

Build a kitchen extension - £42,172

Hip to gable loft conversion - £42,172

Granny annexe - £87,172

Garden office - £10,172

Convert a Garage - £16,172

Garage - £18,672

Build a flat roof extension - £22,172

Build a dormer loft conversion - £42,172

Concrete foundations - £6,422

Convert a bungalow loft - £29,172

Convert a basement - £39,435