From £17,556
Trusted and professional extension builder in Carnaby. Experienced in all extension buildering work and keeping within budget and on quote. Room at...
From £17,228
NORCON CONSTRUCTION LTD is an established and experienced local extension builder in Carnaby. Please contact us for a free, no obligation quote and...
From £17,476
Relax... you have found a reliable extension builder in Carnaby. Roof Force Roofing Specialists Limited is a friendly and reliable company based in...

Underpinning ranges from £17,228 (NORCON CONSTRUCTION LTD based in YO14) to £17,556 (Room at the Top Loft Conversions based in YO16), 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 Carnaby by posting a job with HaMuch and we will send it to extension builders in Carnaby.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bridlington | £32 | £252 |
| Underpin A Building near Scarborough | £29 | £234 |
| Underpin A Building near Beverley | £29 | £223 |
| Underpin A Building near East Riding | £29 | £223 |
| Underpin A Building near Hull | £29 | £223 |
| Underpin A Building near Willerby | £29 | £221 |
| Underpin A Building near Goole | £26 | £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 - £17,420

Two storey extension - £87,880

Build a timber frame extension - £25,920

Build a swimming pool - £80,920

Single storey extension - £53,400

Side return extension - £40,600

Install an RSJ - £2,120

Outbuilding - £9,920

Build a Mansard loft conversion - £51,920

Loft conversion - £33,000

Build a kitchen extension - £41,920

Hip to gable loft conversion - £41,920

Granny annexe - £86,920

Garden office - £9,920

Convert a Garage - £15,920

Garage - £18,420

Build a flat roof extension - £21,920

Build a dormer loft conversion - £41,920

Concrete foundations - £6,170

Convert a bungalow loft - £28,920

Convert a basement - £36,600