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Select your affordable TN15 extension builder
Experienced extension builder ready to quote for your work. PPC CONSTRUCTION is the best extension builder in TN15. No obligation free quotes and m...
From £17,788
M&R BUILDING & LANDCAPING LTD is a trusted extension builder serving customers in TN15 and the surrounding area. Contact us to today to get a compe...
From £17,668
Need an Extension Builder in TN15? Starr Installations Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for...

Underpinning ranges from £17,548 (PPC CONSTRUCTION based in TN13) to £17,788 (M&R BUILDING & LANDCAPING LTD based in TN15), 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 TN15 by posting a job with HaMuch and we will send it to extension builders in TN15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Sevenoaks | £38 | £234 |
| Underpin A Building near Tonbridge | £38 | £254 |
| Underpin A Building near Larkfield | £41 | £253 |
| Underpin A Building near Northfleet | £41 | £261 |
| Underpin A Building near Gravesend | £40 | £260 |
| Underpin A Building near Dartford | £41 | £265 |
| Underpin A Building near Bexley | £42 | £265 |
| Underpin A Building near Maidstone | £40 | £255 |
| Underpin A Building near Rochester | £39 | £254 |
| Underpin A Building near Tunbridge Wells | £37 | £258 |
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 - £17,668

Two storey extension - £88,252

Build a timber frame extension - £26,168

Build a swimming pool - £81,168

Single storey extension - £58,360

Side return extension - £43,390

Install an RSJ - £2,368

Outbuilding - £10,168

Build a Mansard loft conversion - £52,168

Loft conversion - £35,325

Build a kitchen extension - £42,168

Hip to gable loft conversion - £42,168

Granny annexe - £87,168

Garden office - £10,168

Convert a Garage - £16,168

Garage - £18,668

Build a flat roof extension - £22,168

Build a dormer loft conversion - £42,168

Concrete foundations - £6,418

Convert a bungalow loft - £29,168

Convert a basement - £39,390