We send your job to ALL Plymstock extension builders
Available extension builders in Plymstock reply
Select your affordable Plymstock extension builder
From £17,628
Stephen Trevillion
Member since October 2026
Minor and major building works
Gary Ede
Need to find an Extension Builder near you for all your extension buildering work?
PLATINUM CONSTRUCTION provides a local, trusted extensio...
Patrick Rule
Trading since 1997 kitchens,bathrooms lofts patios roof work and much more
Matthew Donovan
Need to find an Extension Builder near you for all your extension buildering work?
Donovan Construction provides a local, trusted extensio...
Luis Escrig
Java construction
provide a complete building service and design
we also provide building maitanance
w...
Need an Extension Builder in Plymstock? NCN Building & Maintenance Ltd has been helping local clients (20 mile radius) with their extension builder...
Rob Jones
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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...
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...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,980 (Donovan Construction based in PL6) to £17,924 (JAVA CONSTRUCTION LTD based in PL7), 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 - £17,426

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