From £17,460
M K Builders Medway Ltd is an established extension buildering business in ME4. We come highly recommended and provide competitive quotes for your ...
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 ...
From £17,444
Top Form Construction are here to help customers who need an Extension Builder in ME4. We offer a competitive rate to complete all your extension b...
From £17,476
Freeman V & Co are here to help customers who need an Extension Builder in ME4. We offer a competitive rate to complete all your extension builderi...
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 £17,700
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,364
G J Roofing Services is an established and experienced local extension builder in ME4. Please contact us for a free, no obligation quote and compet...
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 £17,540
Relax... you have found a reliable extension builder in ME4. CLEAN ROOM CONSTRUCTION LTD is a friendly and reliable company based in ME4 who consid...

Underpinning ranges from £17,364 (G J Roofing Services based in ME1) 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 ME4 by posting a job with HaMuch and we will send it to extension builders in ME4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Chatham | £34 | £220 |
| Underpin A Building near Gillingham | £34 | £219 |
| Underpin A Building near Rochester | £34 | £220 |
| Underpin A Building near Larkfield | £36 | £224 |
| Underpin A Building near Gravesend | £35 | £227 |
| Underpin A Building near Maidstone | £36 | £226 |
| Underpin A Building near Northfleet | £35 | £227 |
| Underpin A Building near Sittingbourne | £31 | £217 |
| Underpin A Building near Canvey Island | £34 | £224 |
| Underpin A Building near Stanford-le-Hope | £35 | £222 |
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 - £17,535

Two storey extension - £88,053

Build a timber frame extension - £26,035

Build a swimming pool - £81,035

Single storey extension - £55,704

Side return extension - £41,896

Install an RSJ - £2,235

Outbuilding - £10,035

Build a Mansard loft conversion - £52,035

Loft conversion - £34,080

Build a kitchen extension - £42,035

Hip to gable loft conversion - £42,035

Granny annexe - £87,035

Garden office - £10,035

Convert a Garage - £16,035

Garage - £18,535

Build a flat roof extension - £22,035

Build a dormer loft conversion - £42,035

Concrete foundations - £6,285

Convert a bungalow loft - £29,035

Convert a basement - £37,896