From £16,996
Trusted and professional extension builder in Rhondda. Experienced in all extension buildering work and keeping within budget and on quote. RJ CONS...
From £17,116
Excel Home Design Ltd is an established extension buildering business in Rhondda. We come highly recommended and provide competitive quotes for you...
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 £17,076
L E JONES BUILDER is an established extension buildering business in Rhondda. We come highly recommended and provide competitive quotes for your wo...
From £17,052
P ALLEN BUILDERS is an established and experienced local extension builder in Rhondda. Please contact us for a free, no obligation quote and compet...
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 £17,028
Need an Extension Builder in Rhondda? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering job...
From £17,396
Barlam Drylining Ltd are here to help customers who need an Extension Builder in Rhondda. We offer a competitive rate to complete all your extensio...
From £17,324
Need an Extension Builder in Rhondda? FORMWORK CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering job...
From £17,116
EXTEND & BUILD LTD is an established and experienced local extension builder in Rhondda. Please contact us for a free, no obligation quote and 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 Rhondda by posting a job with HaMuch and we will send it to extension builders in Rhondda.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Rhondda | £31 | £206 |
| Underpin A Building near Rhondda, Cynon, Taff | £31 | £209 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Church Village | £34 | £214 |
| Underpin A Building near Aberdare | £32 | £212 |
| Underpin A Building near Caerphilly | £33 | £208 |
| Underpin A Building near Merthyr Tydfil | £33 | £220 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Bridgend | £32 | £200 |
| Underpin A Building near Tredegar | £28 | £218 |
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 - £17,160

Two storey extension - £87,490

Build a timber frame extension - £25,660

Build a swimming pool - £80,660

Single storey extension - £48,200

Side return extension - £37,675

Install an RSJ - £1,860

Outbuilding - £9,660

Build a Mansard loft conversion - £51,660

Loft conversion - £30,563

Build a kitchen extension - £41,660

Hip to gable loft conversion - £41,660

Granny annexe - £86,660

Garden office - £9,660

Convert a Garage - £15,660

Garage - £18,160

Build a flat roof extension - £21,660

Build a dormer loft conversion - £41,660

Concrete foundations - £5,910

Convert a bungalow loft - £28,660

Convert a basement - £33,675