From £17,612
Houseline Construction Ltd is a trusted extension builder serving customers in RG1 and the surrounding area. Contact us to today to get a competiti...
From £17,588
A Sainsbury Builder and Property Maintenance Ltd are here to help customers who need an Extension Builder in RG1. We offer a competitive rate to co...
From £17,460
Trusted and professional extension builder in RG1. Experienced in all extension buildering work and keeping within budget and on quote. Wise Roofin...
From £17,628
M C Building Services is a trusted extension builder serving customers in RG1 and the surrounding area. Contact us to today to get a competitive qu...
From £17,812
KIAAN Buildwell Ltd is a trusted extension builder serving customers in RG1 and the surrounding area. Contact us to today to get a competitive quot...
From £17,932
Christina meyer property ltd is a trusted extension builder serving customers in RG1 and the surrounding area. Contact us to today to get a competi...
From £17,652
Trusted and professional extension builder in RG1. Experienced in all extension buildering work and keeping within budget and on quote. BOSTON BUIL...
From £17,580
Experienced extension builder ready to quote for your work. SW Construction is the best extension builder in RG1. No obligation free quotes and man...
From £17,580
Scanlan Interiors is an established, independent, family run Home Improvement business based in Caversham, Reading, in Berkshire. We specialise in ...
From £17,972
Experienced extension builder ready to quote for your work. Inspiral is the best extension builder in RG1. No obligation free quotes and many happy...

Underpinning ranges from £17,460 (Wise Roofing based in RG1) to £17,972 (Inspiral based in RG30), 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 RG1 by posting a job with HaMuch and we will send it to extension builders in RG1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Reading | £36 | £230 |
| Underpin A Building near Caversham | £33 | £229 |
| Underpin A Building near Woodley | £37 | £232 |
| Underpin A Building near Wokingham | £35 | £241 |
| Underpin A Building near Bracknell Forest | £35 | £248 |
| Underpin A Building near Bracknell | £35 | £248 |
| Underpin A Building near Sandhurst | £35 | £242 |
| Underpin A Building near Maidenhead | £36 | £236 |
| Underpin A Building near Thatcham | £33 | £229 |
| Underpin A Building near Camberley | £36 | £244 |
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 - £17,682

Two storey extension - £88,272

Build a timber frame extension - £26,182

Build a swimming pool - £81,182

Single storey extension - £58,632

Side return extension - £43,543

Install an RSJ - £2,382

Outbuilding - £10,182

Build a Mansard loft conversion - £52,182

Loft conversion - £35,453

Build a kitchen extension - £42,182

Hip to gable loft conversion - £42,182

Granny annexe - £87,182

Garden office - £10,182

Convert a Garage - £16,182

Garage - £18,682

Build a flat roof extension - £22,182

Build a dormer loft conversion - £42,182

Concrete foundations - £6,432

Convert a bungalow loft - £29,182

Convert a basement - £39,543