From £17,676
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,820
Essex Elite Services is a trusted extension builder serving customers in CM14 and the surrounding area. Contact us to today to get a competitive qu...
From £17,596
Renov8 Create are here to help customers who need an Extension Builder in CM14. We offer a competitive rate to complete all your extension builderi...
From £17,700
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £17,772
Our building services company Harris Murray Carpentry & Building Ltd has been helping customers in Brentwood, Billericay, and Essex by providing pr...
From £17,940
Bush Builders are a domestic building contracting firm which is based in Upminster, Essex. Covering all of Essex, London and the surrounding areas....
From £17,524
Need to find an Extension Builder near you for all your extension buildering work?
D Weaver Builders Ltd provides a local, trusted extensio...
From £17,620
We offer good standard and professional services, with competitive prices and long warrantees
From £17,676
Experienced extension builder ready to quote for your work. PMD Construction is the best extension builder in CM14. No obligation free quotes and m...
From £17,404
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

Underpinning ranges from £17,404 (Line Up Brickwork Ltd based in CM13) to £17,940 (Bush Builders based in CM14), 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 CM14 by posting a job with HaMuch and we will send it to extension builders in CM14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Brentwood | £34 | £225 |
| Underpin A Building near Romford | £39 | £237 |
| Underpin A Building near Billericay | £34 | £219 |
| Underpin A Building near South Ockendon | £51 | £242 |
| Underpin A Building near Basildon | £34 | £220 |
| Underpin A Building near Chafford Hundred | £36 | £227 |
| Underpin A Building near Thurrock | £36 | £227 |
| Underpin A Building near Stanford-le-Hope | £35 | £222 |
| Underpin A Building near Grays | £36 | £226 |
| Underpin A Building near Loughton | £38 | £238 |
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 - £17,673

Two storey extension - £88,259

Build a timber frame extension - £26,173

Build a swimming pool - £81,173

Single storey extension - £58,456

Side return extension - £43,444

Install an RSJ - £2,373

Outbuilding - £10,173

Build a Mansard loft conversion - £52,173

Loft conversion - £35,370

Build a kitchen extension - £42,173

Hip to gable loft conversion - £42,173

Granny annexe - £87,173

Garden office - £10,173

Convert a Garage - £16,173

Garage - £18,673

Build a flat roof extension - £22,173

Build a dormer loft conversion - £42,173

Concrete foundations - £6,423

Convert a bungalow loft - £29,173

Convert a basement - £39,444