From £17,364
HYDER CONSTRUCTION LTD is a trusted extension builder serving customers in Swanscombe and the surrounding area. Contact us to today to get a compet...
From £17,628
Relax... you have found a reliable extension builder in Swanscombe. JPRMS Ltd is a friendly and reliable company based in Swanscombe who consider n...
From £17,492
Warren Miller Building is an established extension buildering business in Swanscombe. We come highly recommended and provide competitive quotes for...
From £17,588
Need an Extension Builder in Swanscombe? DP Construction has been helping local clients (10 mile radius) with their extension buildering jobs for m...
From £17,780
GLADHOUSE CONSTRUCTION are here to help customers who need an Extension Builder in Swanscombe. We offer a competitive rate to complete all your ext...
From £17,596
FLEX CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in Swanscombe. We offer a competitive rate to complete all your ...
From £17,804
ALLTYPE BUILDING CONTRACTORS L are here to help customers who need an Extension Builder in Swanscombe. We offer a competitive rate to complete all ...
From £17,596
Beautiful Kitchens is a family-run company, owned and directed by husband and wife Debbie and Nigel Powell along with their daughter, Bethany, and ...
From £17,596
Experienced extension builder ready to quote for your work. Deen Construction & Renovations Ltd is the best extension builder in Swanscombe. No obl...
From £17,468
At Deen Construction & Renovations Ltd, we offer a one stop solution for a range of property Constructions & Renovation projects, Maintenance, Full...

Underpinning ranges from £17,364 (HYDER CONSTRUCTION LTD based in DA11) to £17,804 (ALLTYPE BUILDING CONTRACTORS L based in DA13), 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 Swanscombe by posting a job with HaMuch and we will send it to extension builders in Swanscombe.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Northfleet | £41 | £261 |
| Underpin A Building near Grays | £41 | £261 |
| Underpin A Building near Chafford Hundred | £41 | £261 |
| Underpin A Building near Gravesend | £40 | £260 |
| Underpin A Building near Thurrock | £41 | £260 |
| Underpin A Building near Dartford | £51 | £273 |
| Underpin A Building near South Ockendon | £57 | £276 |
| Underpin A Building near Bexley | £41 | £265 |
| Underpin A Building near Stanford-le-Hope | £40 | £254 |
| Underpin A Building near Rochester | £39 | £254 |
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 - £17,591

Two storey extension - £88,137

Build a timber frame extension - £26,091

Build a swimming pool - £81,091

Single storey extension - £56,824

Side return extension - £42,526

Install an RSJ - £2,291

Outbuilding - £10,091

Build a Mansard loft conversion - £52,091

Loft conversion - £34,605

Build a kitchen extension - £42,091

Hip to gable loft conversion - £42,091

Granny annexe - £87,091

Garden office - £10,091

Convert a Garage - £16,091

Garage - £18,591

Build a flat roof extension - £22,091

Build a dormer loft conversion - £42,091

Concrete foundations - £6,341

Convert a bungalow loft - £29,091

Convert a basement - £38,526