From £17,700
Keith Elliott Construction is an established extension buildering business in Plymouth. We come highly recommended and provide competitive quotes f...
From £17,516
Plymouth, PL1
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,692
S&A Developments is a trusted extension builder serving customers in Plymouth and the surrounding area. Contact us to today to get a competitive qu...
From £17,268
Plymouth, PL2
Need an Extension Builder in Plymouth? NCN Building & Maintenance Ltd has been helping local clients (20 mile radius) with their extension builderi...
From £17,420
Plymouth, PL3
A.R.T Construction is a trusted extension builder serving customers in Plymouth and the surrounding area. Contact us to today to get a competitive ...
From £17,212
Plymouth, PL2
Trusted and professional extension builder in Plymouth. Experienced in all extension buildering work and keeping within budget and on quote. Steve ...
From £17,476
Need an Extension Builder in Plymouth? HLCA Design has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £17,380
Plymouth, PL3
Relax... you have found a reliable extension builder in Plymouth. M D C Building Services is a friendly and reliable company based in Plymouth who ...
From £16,980
Plymouth, PL6
Need to find an Extension Builder near you for all your extension buildering work?
Donovan Construction provides a local, trusted extensio...
From £17,612
Relax... you have found a reliable extension builder in Plymouth. GD ANDREW BUILDING CONTRACTORS is a friendly and reliable company based in Plymou...

Underpinning ranges from £16,980 (Donovan Construction based in PL6) to £17,700 (Keith Elliott Construction based in PL1), 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 Plymouth by posting a job with HaMuch and we will send it to extension builders in Plymouth.
"Underpinning" - PLYMOUTH, job posted 12/02/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Plymouth | £30 | £230 |
| Underpin A Building near Paignton | £27 | £222 |
| Underpin A Building near Newton Abbot | £27 | £236 |
| Underpin A Building near Teignbridge | £27 | £260 |
| Underpin A Building near Torbay | £27 | £223 |
| Underpin A Building near Torquay | £28 | £223 |
| Underpin A Building near St Austell | £38 | £245 |
| Underpin A Building near Exeter | £27 | £221 |
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 - £17,426

Two storey extension - £87,888

Build a timber frame extension - £25,926

Build a swimming pool - £80,926

Single storey extension - £53,512

Side return extension - £40,663

Install an RSJ - £2,126

Outbuilding - £9,926

Build a Mansard loft conversion - £51,926

Loft conversion - £33,053

Build a kitchen extension - £41,926

Hip to gable loft conversion - £41,926

Granny annexe - £86,926

Garden office - £9,926

Convert a Garage - £15,926

Garage - £18,426

Build a flat roof extension - £21,926

Build a dormer loft conversion - £41,926

Concrete foundations - £6,176

Convert a bungalow loft - £28,926

Convert a basement - £36,663