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Select your affordable Dover extension builder
Adam Porter
Dover, CT17
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
Need an Extension Builder in Dover? M LONG T/A MJ BUILDINGS has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £17,324
Relax... you have found a reliable extension builder in Dover. Cosbuild and Maintenance ltd is a friendly and reliable company based in Dover who c...
From £17,036
Dover, CT14
4D BUILDERS LTD are here to help customers who need an Extension Builder in Dover. We offer a competitive rate to complete all your ...

Underpinning ranges from £16,868 (A-Pex Building based in CT17) to £17,324 (Cosbuild and Maintenance ltd based in CT17), 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 Dover by posting a job with HaMuch and we will send it to extension builders in Dover.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Dover | £29 | £226 |
| Underpin A Building near Folkestone | £31 | £233 |
| Underpin A Building near Deal | £26 | £199 |
| Underpin A Building near Hythe | £31 | £228 |
| Underpin A Building near Canterbury | £31 | £232 |
| Underpin A Building near Margate | £27 | £208 |
| Underpin A Building near Ramsgate | £27 | £208 |
| Underpin A Building near Thanet | £27 | £207 |
| Underpin A Building near Broadstairs | £27 | £208 |
| Underpin A Building near Herne Bay | £28 | £213 |
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 - £17,116

Two storey extension - £87,424

Build a timber frame extension - £25,616

Build a swimming pool - £80,616

Single storey extension - £47,320

Side return extension - £37,180

Install an RSJ - £1,816

Outbuilding - £9,616

Build a Mansard loft conversion - £51,616

Loft conversion - £30,150

Build a kitchen extension - £41,616

Hip to gable loft conversion - £41,616

Granny annexe - £86,616

Garden office - £9,616

Convert a Garage - £15,616

Garage - £18,116

Build a flat roof extension - £21,616

Build a dormer loft conversion - £41,616

Concrete foundations - £5,866

Convert a bungalow loft - £28,616

Convert a basement - £33,180