From £17,012
Trusted and professional extension builder in FY1. Experienced in all extension buildering work and keeping within budget and on quote. Lords have ...
From £17,212
Smedley Construction Ltd is a trusted extension builder serving customers in FY1 and the surrounding area. Contact us to today to get a competitive...
From £17,132
TECH BUILDING limited is an established extension buildering business in FY1. We come highly recommended and provide competitive quotes for your wo...
From £17,076
Tekton Construction NW is an established extension buildering business in FY1. We come highly recommended and provide competitive quotes for your w...
From £17,348
Relax... you have found a reliable extension builder in FY1. Green Generation Builders Ltd is a friendly and reliable company based in FY1 who cons...
From £17,156
Broadfield construction is a trusted extension builder serving customers in FY1 and the surrounding area. Contact us to today to get a competitive ...
From £17,284
Fortis Construction & Development is a trusted extension builder serving customers in FY1 and the surrounding area. Contact us to today to get a co...
From £17,396
Experienced extension builder ready to quote for your work. George Hill & Sons is the best extension builder in FY1. No obligation free quotes and ...
From £17,324
We do it all from plan to completion
25 yrs and no complaints ..
modern and contemporary
kitchen bathrooms

Underpinning ranges from £17,012 (Lords based in FY1) to £17,396 (George Hill & Sons based in FY4), 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 FY1 by posting a job with HaMuch and we will send it to extension builders in FY1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Blackpool | £29 | £209 |
| Underpin A Building near Lytham St Annes | £28 | £206 |
| Underpin A Building near Fleetwood | £28 | £206 |
| Underpin A Building near Southport | £27 | £198 |
| Underpin A Building near Penwortham | £30 | £218 |
| Underpin A Building near Fulwood | £31 | £217 |
| Underpin A Building near Preston | £30 | £219 |
| Underpin A Building near Leyland | £31 | £223 |
| Underpin A Building near Bamber Bridge | £30 | £217 |
| Underpin A Building near Formby | £23 | £162 |
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 - £17,204

Two storey extension - £87,556

Build a timber frame extension - £25,704

Build a swimming pool - £80,704

Single storey extension - £49,080

Side return extension - £38,170

Install an RSJ - £1,904

Outbuilding - £9,704

Build a Mansard loft conversion - £51,704

Loft conversion - £30,975

Build a kitchen extension - £41,704

Hip to gable loft conversion - £41,704

Granny annexe - £86,704

Garden office - £9,704

Convert a Garage - £15,704

Garage - £18,204

Build a flat roof extension - £21,704

Build a dormer loft conversion - £41,704

Concrete foundations - £5,954

Convert a bungalow loft - £28,704

Convert a basement - £34,170