From £17,692
Gb construction are here to help customers who need an Extension Builder in TN9. We offer a competitive rate to complete all your extension builde...
From £17,420
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in TN9. We offer a competitive rate to complete all your ...
From £17,772
Need to find an Extension Builder near you for all your extension buildering work?
DPP Construction (David Price Partnership) provides a lo...
From £17,876
Need an Extension Builder in TN9? Saintflexs has been helping local clients (10 mile radius) with their extension buildering jobs for many years. ...
From £17,492
Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in TN9. We offer a competitive rate to complete all your extensio...
From £17,588
Relax... you have found a reliable extension builder in TN9. L M G Building Services (London) Ltd is a friendly and reliable company based in TN9 w...
From £16,820
MAGNOLIA HOME is family run,Tunbridge Wells based building company,.With years expirence,you as the customer can be assured that you are in safe ha...
2 reviews
From £16,868
Hi
I'm very well rated tradesmen please check my website
See you soon
"Excellent painting skills." - MAIDSTONE,reviewed 27/03/19, TONY
From £17,796
Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in TN9. No obligation f...
From £17,452
QC11 LTD are here to help customers who need an Extension Builder in TN9. We offer a competitive rate to complete all your extension buildering job...

Underpinning ranges from £16,820 (Magnoli Home based in TN2) to £17,876 (Saintflexs based in BR1), 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 TN9 by posting a job with HaMuch and we will send it to extension builders in TN9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Tonbridge | £38 | £254 |
| Underpin A Building near Tunbridge Wells | £37 | £258 |
| Underpin A Building near Sevenoaks | £38 | £234 |
| Underpin A Building near Crowborough | £36 | £258 |
| Underpin A Building near Larkfield | £41 | £253 |
| Underpin A Building near Maidstone | £40 | £255 |
| Underpin A Building near East Grinstead | £37 | £259 |
| Underpin A Building near Wealden | £35 | £256 |
| Underpin A Building near Rochester | £39 | £254 |
| Underpin A Building near Caterham | £43 | £272 |
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 - £17,478

Two storey extension - £87,966

Build a timber frame extension - £25,978

Build a swimming pool - £80,978

Single storey extension - £54,552

Side return extension - £41,248

Install an RSJ - £2,178

Outbuilding - £9,978

Build a Mansard loft conversion - £51,978

Loft conversion - £33,540

Build a kitchen extension - £41,978

Hip to gable loft conversion - £41,978

Granny annexe - £86,978

Garden office - £9,978

Convert a Garage - £15,978

Garage - £18,478

Build a flat roof extension - £21,978

Build a dormer loft conversion - £41,978

Concrete foundations - £6,228

Convert a bungalow loft - £28,978

Convert a basement - £37,248