From £17,780
Member since August 2026
Relax... you have found a reliable extension builder in Whitley. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Whitley ...
From £17,796
Pinnacle Property Services is a trusted extension builder serving customers in Whitley and the surrounding area. Contact us to today to get a compe...
From £17,836
Aerea is a trusted extension builder serving customers in Whitley and the surrounding area. Contact us to today to get a competitive quote for exte...
From £17,652
Experienced extension builder ready to quote for your work. ADW Roofing Services is the best extension builder in Whitley. No obligation free quote...
From £17,428
Holt Builders Ltd are here to help customers who need an Extension Builder in Whitley. We offer a competitive rate to complete all your extension b...
From £17,884
M B Building & Construction Ltd is a trusted extension builder serving customers in Whitley and the surrounding area. Contact us to today to get a ...
From £17,564
Need to find an Extension Builder near you for all your extension buildering work?
MPE Brickwork provides a local, trusted extension builde...
From £17,724
Ayling & Sons Roofing Ltd is an established and experienced local extension builder in Whitley. Please contact us for a free, no obligation quote a...
From £17,900
The Roof Doctor is an established and experienced local extension builder in Whitley. Please contact us for a free, no obligation quote and competi...
From £17,588
Experienced extension builder ready to quote for your work. Betsworth Developments is the best extension builder in Whitley. No obligation free quo...

Underpinning ranges from £17,428 (Holt Builders Ltd based in GU12) to £17,900 (The Roof Doctor based in GU12), 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 Whitley by posting a job with HaMuch and we will send it to extension builders in Whitley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Reading | £42 | £266 |
| Underpin A Building near Woodley | £42 | £266 |
| Underpin A Building near Caversham | £38 | £265 |
| Underpin A Building near Wokingham | £41 | £280 |
| Underpin A Building near Bracknell Forest | £41 | £287 |
| Underpin A Building near Bracknell | £41 | £286 |
| Underpin A Building near Sandhurst | £41 | £283 |
| Underpin A Building near Camberley | £41 | £283 |
| Underpin A Building near Fleet | £41 | £270 |
| Underpin A Building near Maidenhead | £41 | £273 |
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 - £17,715

Two storey extension - £88,323

Build a timber frame extension - £26,215

Build a swimming pool - £81,215

Single storey extension - £59,304

Side return extension - £43,921

Install an RSJ - £2,415

Outbuilding - £10,215

Build a Mansard loft conversion - £52,215

Loft conversion - £35,768

Build a kitchen extension - £42,215

Hip to gable loft conversion - £42,215

Granny annexe - £87,215

Garden office - £10,215

Convert a Garage - £16,215

Garage - £18,715

Build a flat roof extension - £22,215

Build a dormer loft conversion - £42,215

Concrete foundations - £6,465

Convert a bungalow loft - £29,215

Convert a basement - £39,921