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...
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 £17,780
We are a local company family run been trading 20 years we have a very good comments & feedback for good work
From £17,548
Experienced extension builder ready to quote for your work. RJM Brickwork is the best extension builder in Carnaby. No obligation free quotes and m...
From £17,276
Need to find an Extension Builder near you for all your extension buildering work?
THOMPSON BUILDERS provides a local, trusted extension bu...
From £17,452
Manor Farm Contractors is a trusted extension builder serving customers in Carnaby and the surrounding area. Contact us to today to get a competiti...

Underpinning ranges from £17,228 (NORCON CONSTRUCTION LTD based in YO14) to £17,780 (J S ROOFING & GUTTERING LIMITED based in YO25), 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 - £17,474

Two storey extension - £87,961

Build a timber frame extension - £25,974

Build a swimming pool - £80,974

Single storey extension - £54,474

Side return extension - £41,204

Install an RSJ - £2,174

Outbuilding - £9,974

Build a Mansard loft conversion - £51,974

Loft conversion - £33,504

Build a kitchen extension - £41,974

Hip to gable loft conversion - £41,974

Granny annexe - £86,974

Garden office - £9,974

Convert a Garage - £15,974

Garage - £18,474

Build a flat roof extension - £21,974

Build a dormer loft conversion - £41,974

Concrete foundations - £6,224

Convert a bungalow loft - £28,974

Convert a basement - £37,204