From £16,868
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
From £17,676
Relax... you have found a reliable extension builder in St Mary In The Marsh. Clint Construction is a friendly and reliable company based in St Mar...
From £17,596
Need to find an Extension Builder near you for all your extension buildering work?
Fast Affordable Builders provides a local, trusted exten...
From £17,316
Relax... you have found a reliable extension builder in St Mary In The Marsh. LEVEL CONSTRUCTION is a friendly and reliable company based in St Ma...
From £17,436
Experienced extension builder ready to quote for your work. THE EAST CLIFF BUILDING CO LTD is the best extension builder in St Mary In The Marsh. N...
From £17,236
Need an Extension Builder in St Mary In The Marsh? M LONG T/A MJ BUILDINGS has been helping local clients (20 mile radius) with their extension bui...
From £17,436
Cranwells Construction is a trusted extension builder serving customers in St Mary In The Marsh and the surrounding area. Contact us to today to ge...
From £17,596
Need to find an Extension Builder near you for all your extension buildering work?
The Sussex Bookcase Company provides a local, trusted ex...
From £17,244
Relax... you have found a reliable extension builder in St Mary In The Marsh. Ljo Brickwork, Landscapes and General Building is a friendly and reli...
From £17,748
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,868 (A-Pex Building based in CT17) to £17,748 (E&F Carpentry and Building Services based in TN24), 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 St Mary In The Marsh by posting a job with HaMuch and we will send it to extension builders in St Mary In The Marsh.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Hythe | £31 | £228 |
| Underpin A Building near Ashford | £36 | £256 |
| Underpin A Building near Folkestone | £31 | £233 |
| Underpin A Building near Hastings | £31 | £246 |
| Underpin A Building near Dover | £29 | £226 |
| Underpin A Building near Canterbury | £31 | £232 |
| Underpin A Building near Faversham | £34 | £235 |
| Underpin A Building near Bexhill-on-Sea | £31 | £243 |
| Underpin A Building near Swale | £35 | £241 |
| Underpin A Building near Whitstable | £28 | £214 |
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 - £17,415

Two storey extension - £87,873

Build a timber frame extension - £25,915

Build a swimming pool - £80,915

Single storey extension - £53,304

Side return extension - £40,546

Install an RSJ - £2,115

Outbuilding - £9,915

Build a Mansard loft conversion - £51,915

Loft conversion - £32,955

Build a kitchen extension - £41,915

Hip to gable loft conversion - £41,915

Granny annexe - £86,915

Garden office - £9,915

Convert a Garage - £15,915

Garage - £18,415

Build a flat roof extension - £21,915

Build a dormer loft conversion - £41,915

Concrete foundations - £6,165

Convert a bungalow loft - £28,915

Convert a basement - £36,546