From £17,828
Mayfair developers have been in the construction industry for over a decade. Our passion is to transform old spaces into new usable homes for our c...
From £17,580
HED Builders Ltd - Building The Dream is a trusted extension builder serving customers in ME8 and the surrounding area. Contact us to today to ge...
From £17,548
HED Builders Ltd is a London based construction company specialising in the exclusive private housing market. Founded by Chris Hambrook and Marcin ...
From £17,420
DG Building Services Kent Limited is an established and experienced local extension builder in ME8. Please contact us for a free, no obligation quo...
From £17,700
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,580
We are a family run business with over 30 years experience in the roofing industry. We pride ourselves on our high standards of workmanship and cus...
From £17,460
Need to find an Extension Builder near you for all your extension buildering work?
McCready's Lofts & Refurbishments provides a local, trus...
From £17,444
Top Form Construction are here to help customers who need an Extension Builder in ME8. We offer a competitive rate to complete all your extension b...
From £17,404
Zeppelin Construction Ltd is a construction company based in Gillingham, Kent. We offer a wide range of construction services to both domestic and ...

Underpinning ranges from £17,404 (Zeppelin Construction Ltd based in ME7) to £17,924 (Des Durant General Building based in ME5), 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 ME8 by posting a job with HaMuch and we will send it to extension builders in ME8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Gillingham | £39 | £253 |
| Underpin A Building near Chatham | £39 | £254 |
| Underpin A Building near Rochester | £39 | £254 |
| Underpin A Building near Sittingbourne | £35 | £246 |
| Underpin A Building near Maidstone | £40 | £255 |
| Underpin A Building near Larkfield | £41 | £253 |
| Underpin A Building near Swale | £35 | £241 |
| Underpin A Building near Gravesend | £40 | £260 |
| Underpin A Building near Canvey Island | £39 | £256 |
| Underpin A Building near Northfleet | £41 | £261 |
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 - £17,589

Two storey extension - £88,133

Build a timber frame extension - £26,089

Build a swimming pool - £81,089

Single storey extension - £56,776

Side return extension - £42,499

Install an RSJ - £2,289

Outbuilding - £10,089

Build a Mansard loft conversion - £52,089

Loft conversion - £34,583

Build a kitchen extension - £42,089

Hip to gable loft conversion - £42,089

Granny annexe - £87,089

Garden office - £10,089

Convert a Garage - £16,089

Garage - £18,589

Build a flat roof extension - £22,089

Build a dormer loft conversion - £42,089

Concrete foundations - £6,339

Convert a bungalow loft - £29,089

Convert a basement - £38,499