From £17,612
Plymstock, PL9
Relax... you have found a reliable extension builder in Plymstock. GD ANDREW BUILDING CONTRACTORS is a friendly and reliable company based in Plyms...
From £17,700
Keith Elliott Construction is an established extension buildering business in Plymstock. We come highly recommended and provide competitive quotes ...
From £17,380
Relax... you have found a reliable extension builder in Plymstock. M D C Building Services is a friendly and reliable company based in Plymstock wh...
From £17,228
Hi I’ve been in construction for more than 25 years. City and guild bricklayer Worked on multiple jobs in this field from an extension to new...
From £17,564
IBuild (SW) Ltd is a trusted extension builder serving customers in Plymstock and the surrounding area. Contact us to today to get a competitive qu...
From £17,212
Need to find an Extension Builder near you for all your extension buildering work?
PLATINUM CONSTRUCTION provides a local, trusted extensio...
From £16,980
Need to find an Extension Builder near you for all your extension buildering work?
Donovan Construction provides a local, trusted extensio...
From £17,692
S&A Developments is a trusted extension builder serving customers in Plymstock and the surrounding area. Contact us to today to get a competitive q...
From £17,516
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,476
Need an Extension Builder in Plymstock? HLCA Design has been helping local clients (20 mile radius) with their extension buildering jobs for many y...

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 Plymstock by posting a job with HaMuch and we will send it to extension builders in Plymstock.
"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 Torbay | £27 | £223 |
| Underpin A Building near Teignbridge | £27 | £260 |
| Underpin A Building near Torquay | £28 | £223 |
| 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 - £17,436

Two storey extension - £87,904

Build a timber frame extension - £25,936

Build a swimming pool - £80,936

Single storey extension - £53,720

Side return extension - £40,780

Install an RSJ - £2,136

Outbuilding - £9,936

Build a Mansard loft conversion - £51,936

Loft conversion - £33,150

Build a kitchen extension - £41,936

Hip to gable loft conversion - £41,936

Granny annexe - £86,936

Garden office - £9,936

Convert a Garage - £15,936

Garage - £18,436

Build a flat roof extension - £21,936

Build a dormer loft conversion - £41,936

Concrete foundations - £6,186

Convert a bungalow loft - £28,936

Convert a basement - £36,780