From £17,740
M&J Brickwork Ltd are a Chelmsford based Bricklaying & General Building company that operate throughout the Essex and South London...
From £18,732
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
From £16,916
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...
From £17,676
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in Benfleet and the surrounding area. Contact us to today to get...
From £16,956
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in Benfleet. No obligation free quote...
From £17,772
P OUGHTON BUILDING is an established and experienced local extension builder in Benfleet. Please contact us for a free, no obligation quote and com...
From £17,660
Property Maintenance are here to help customers who need an Extension Builder in Benfleet. We offer a competitive rate to complete all your extensi...
From £17,860
Need an Extension Builder in Benfleet? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension builderi...
From £17,724
Dalls Construction Limited prides in delivering an excellent extension buildering service and value for money in Benfleet and the surrounding areas...
From £17,508
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...

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 Benfleet by posting a job with HaMuch and we will send it to extension builders in Benfleet.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Thundersley | £38 | £251 |
| Underpin A Building near Rayleigh | £39 | £252 |
| Underpin A Building near Canvey Island | £39 | £256 |
| Underpin A Building near Basildon | £39 | £251 |
| Underpin A Building near Wickford | £39 | £255 |
| Underpin A Building near Southend-on-Sea | £37 | £247 |
| Underpin A Building near Stanford-le-Hope | £40 | £254 |
| Underpin A Building near Billericay | £38 | £248 |
| Underpin A Building near Thurrock | £41 | £260 |
| Underpin A Building near Brentwood | £39 | £255 |
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 - £17,654

Two storey extension - £88,232

Build a timber frame extension - £26,154

Build a swimming pool - £81,154

Single storey extension - £58,088

Side return extension - £43,237

Install an RSJ - £2,354

Outbuilding - £10,154

Build a Mansard loft conversion - £52,154

Loft conversion - £35,198

Build a kitchen extension - £42,154

Hip to gable loft conversion - £42,154

Granny annexe - £87,154

Garden office - £10,154

Convert a Garage - £16,154

Garage - £18,654

Build a flat roof extension - £22,154

Build a dormer loft conversion - £42,154

Concrete foundations - £6,404

Convert a bungalow loft - £29,154

Convert a basement - £39,237