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Select your affordable Harold Wood extension builder
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
Vasile Boghean
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need an Extension Builder in Harold Wood? Tony Rutter has been helping local clients (10 mile radius) with their extension buildering jobs for many...
Shaik Jamal
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...
Need to find an Extension Builder near you for all your extension buildering work?
ESK Builders provides a local, trusted extension builder...
Trusted and professional extension builder in Harold Wood. Experienced in all extension buildering work and keeping within budget and on quote. V&L...
Lovehome Construction is an established and experienced local extension builder in Harold Wood. Please contact us for a free, no obligation quote a...
Relax... you have found a reliable extension builder in Harold Wood. A Star Construction is a friendly and reliable company based in Harold Wood wh...

Underpinning ranges from £16,916 (RTC Plumbers based in RM6) to £18,732 (Optimus Build Solutions based in Rm1), 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 Harold Wood by posting a job with HaMuch and we will send it to extension builders in Harold Wood.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Brentwood | £39 | £255 |
| Underpin A Building near Romford | £45 | £274 |
| Underpin A Building near Billericay | £38 | £248 |
| Underpin A Building near South Ockendon | £42 | £264 |
| Underpin A Building near Basildon | £39 | £251 |
| Underpin A Building near Chafford Hundred | £41 | £261 |
| Underpin A Building near Thurrock | £41 | £260 |
| Underpin A Building near Stanford-le-Hope | £40 | £254 |
| Underpin A Building near Grays | £41 | £261 |
| Underpin A Building near Loughton | £44 | £273 |
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 - £17,668

Two storey extension - £88,252

Build a timber frame extension - £26,168

Build a swimming pool - £81,168

Single storey extension - £58,360

Side return extension - £43,390

Install an RSJ - £2,368

Outbuilding - £10,168

Build a Mansard loft conversion - £52,168

Loft conversion - £35,325

Build a kitchen extension - £42,168

Hip to gable loft conversion - £42,168

Granny annexe - £87,168

Garden office - £10,168

Convert a Garage - £16,168

Garage - £18,668

Build a flat roof extension - £22,168

Build a dormer loft conversion - £42,168

Concrete foundations - £6,418

Convert a bungalow loft - £29,168

Convert a basement - £39,390