From £17,076
Relax... you have found a reliable extension builder in Garw Valley. Cwtch Property Developments is a friendly and reliable company based in Garw V...
From £17,332
Experienced extension builder ready to quote for your work. WH Builders is the best extension builder in Garw Valley. No obligation free quotes and...
From £17,300
Scorpion Windows LTD is a trusted extension builder serving customers in Garw Valley and the surrounding area. Contact us to today to get a competi...
From £17,364
Need an Extension Builder in Garw Valley? SP Property Maintenance has been helping local clients (20 mile radius) with their extension buildering j...
From £17,452
Trusted and professional extension builder in Garw Valley. Experienced in all extension buildering work and keeping within budget and on quote. Com...
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 £17,116
Excel Home Design Ltd is an established extension buildering business in Garw Valley. We come highly recommended and provide competitive quotes for...
From £17,284
S J S Services (Wales) Ltd is a trusted extension builder serving customers in Garw Valley and the surrounding area. Contact us to today to get a c...
From £16,996
Trusted and professional extension builder in Garw Valley. Experienced in all extension buildering work and keeping within budget and on quote. RJ ...
From £19,580
Silicone Render System Ltd is a plastering company based in Porthcawl, with over 20 years’ experience in the plastering trade. W...

Underpinning ranges from £16,996 (RJ CONSTRUCTION based in CF40) to £19,580 (Silicone Rendering Systems Ltd based in CF36), 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 Garw Valley by posting a job with HaMuch and we will send it to extension builders in Garw Valley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bridgend | £32 | £200 |
| Underpin A Building near Maesteg | £38 | £283 |
| Underpin A Building near Pyle | £34 | £262 |
| Underpin A Building near Porthcawl | £33 | £252 |
| Underpin A Building near Rhondda | £31 | £206 |
| Underpin A Building near Port Talbot | £31 | £227 |
| Underpin A Building near Rhondda, Cynon, Taff | £31 | £209 |
| Underpin A Building near Pontypridd | £33 | £211 |
| Underpin A Building near Neath Port Talbot | £31 | £224 |
| Underpin A Building near Vale of Glamorgan | £29 | £217 |
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 - £17,479

Two storey extension - £87,969

Build a timber frame extension - £25,979

Build a swimming pool - £80,979

Single storey extension - £54,584

Side return extension - £41,266

Install an RSJ - £2,179

Outbuilding - £9,979

Build a Mansard loft conversion - £51,979

Loft conversion - £33,555

Build a kitchen extension - £41,979

Hip to gable loft conversion - £41,979

Granny annexe - £86,979

Garden office - £9,979

Convert a Garage - £15,979

Garage - £18,479

Build a flat roof extension - £21,979

Build a dormer loft conversion - £41,979

Concrete foundations - £6,229

Convert a bungalow loft - £28,979

Convert a basement - £37,266