From £17,764
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,532
Porter & Son Ltd is a trusted extension builder serving customers in RG9 and the surrounding area. Contact us to today to get a competitive quote f...
From £17,972
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,876
Experienced extension builder ready to quote for your work. WARRICK BUILDING is the best extension builder in RG9. No obligation free quotes and ma...
From £17,428
Relax... you have found a reliable extension builder in RG9. J & K CONSTRUCTION is a friendly and reliable company based in RG9 who consider no job...
From £17,612
Relax... you have found a reliable extension builder in RG9. P Stelling General Builders is a friendly and reliable company based in RG9 who consid...
From £17,692
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,372
Need to find an Extension Builder near you for all your extension buildering work?
CRS Roofing provides a local, trusted extension builderi...
From £17,468
Need an Extension Builder in RG9? W.D.Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £17,796
At Velvaere Studios, we design and fit out residential and commercial fitness and wellness studios with specialist finishes and fitness equipment.W...

Underpinning ranges from £17,372 (CRS Roofing based in RG4) to £17,972 (Kambos Consulting based in RG9), 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 RG9 by posting a job with HaMuch and we will send it to extension builders in RG9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Caversham | £33 | £229 |
| Underpin A Building near Woodley | £37 | £232 |
| Underpin A Building near Reading | £36 | £230 |
| Underpin A Building near Wycombe | £34 | £234 |
| Underpin A Building near High Wycombe | £34 | £237 |
| Underpin A Building near Maidenhead | £36 | £236 |
| Underpin A Building near South Oxfordshire | £32 | £229 |
| Underpin A Building near Wokingham | £35 | £241 |
| Underpin A Building near Bracknell Forest | £35 | £248 |
| Underpin A Building near Hazlemere | £34 | £235 |
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 - £17,651

Two storey extension - £88,227

Build a timber frame extension - £26,151

Build a swimming pool - £81,151

Single storey extension - £58,024

Side return extension - £43,201

Install an RSJ - £2,351

Outbuilding - £10,151

Build a Mansard loft conversion - £52,151

Loft conversion - £35,168

Build a kitchen extension - £42,151

Hip to gable loft conversion - £42,151

Granny annexe - £87,151

Garden office - £10,151

Convert a Garage - £16,151

Garage - £18,651

Build a flat roof extension - £22,151

Build a dormer loft conversion - £42,151

Concrete foundations - £6,401

Convert a bungalow loft - £29,151

Convert a basement - £39,201