From £17,076
L E JONES BUILDER is an established extension buildering business in Pentre. We come highly recommended and provide competitive quotes for your wor...
From £16,996
Trusted and professional extension builder in Pentre. Experienced in all extension buildering work and keeping within budget and on quote. RJ CONST...
From £17,028
Need an Extension Builder in Pentre? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,308
Dare Fitness is an established extension buildering business in Pentre. We come highly recommended and provide competitive quotes for your work.
From £17,396
Barlam Drylining Ltd are here to help customers who need an Extension Builder in Pentre. We offer a competitive rate to complete all your extension...
From £17,116
Excel Home Design Ltd is an established extension buildering business in Pentre. We come highly recommended and provide competitive quotes for your...
From £17,324
Need an Extension Builder in Pentre? FORMWORK CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,292
We are a small family run business, established over 35 years ago, specialising in Hard Landscaping (Patios) and Block Paving.We a...
From £17,204
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,220
G Wager Building Maintenance is a trusted extension builder serving customers in Pentre and the surrounding area. Contact us to today to get a comp...

Underpinning ranges from £16,996 (RJ CONSTRUCTION based in CF40) to £17,396 (Barlam Drylining Ltd based in CF45), 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 Pentre by posting a job with HaMuch and we will send it to extension builders in Pentre.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Rhondda, Cynon, Taff | £31 | £209 |
| Underpin A Building near Rhondda | £31 | £206 |
| Underpin A Building near Aberdare | £32 | £212 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Merthyr Tydfil | £33 | £220 |
| Underpin A Building near Church Village | £34 | £214 |
| Underpin A Building near Bridgend | £32 | £200 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Pyle | £34 | £262 |
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 - £17,196

Two storey extension - £87,544

Build a timber frame extension - £25,696

Build a swimming pool - £80,696

Single storey extension - £48,920

Side return extension - £38,080

Install an RSJ - £1,896

Outbuilding - £9,696

Build a Mansard loft conversion - £51,696

Loft conversion - £30,900

Build a kitchen extension - £41,696

Hip to gable loft conversion - £41,696

Granny annexe - £86,696

Garden office - £9,696

Convert a Garage - £15,696

Garage - £18,196

Build a flat roof extension - £21,696

Build a dormer loft conversion - £41,696

Concrete foundations - £5,946

Convert a bungalow loft - £28,696

Convert a basement - £34,080