From £16,972
Trusted and professional extension builder in L20. Experienced in all extension buildering work and keeping within budget and on quote. Jones Lands...
From £17,172
J.M.C Building Services is a trusted extension builder serving customers in L20 and the surrounding area. Contact us to today to get a competitive ...
From £17,532
Tong Building & Joinery Ltd are here to help customers who need an Extension Builder in L20. We offer a competitive rate to complete all your exten...
From £17,556
AJ Solutions is an established extension buildering business in L20. We come highly recommended and provide competitive quotes for your work.
From £17,476
Nathan Thomas Plumbing is an established extension buildering business in L20. We come highly recommended and provide competitive quotes for your w...
From £17,108
Relax... you have found a reliable extension builder in L20. R A C Gas is a friendly and reliable company based in L20 who consider no job as too b...
From £17,196
G P Roofing & Building Service is a trusted extension builder serving customers in L20 and the surrounding area. Contact us to today to get a compe...
From £17,292
EBI BUILDING RENOVATIONS is a trusted extension builder serving customers in L20 and the surrounding area. Contact us to today to get a competitive...
From £17,188
Experienced extension builder ready to quote for your work. BURGHWOOD CONSTRUCTION LTD is the best extension builder in L20. No obligation free quo...
From £17,028
Need an Extension Builder in L20? Darren Finney Builders has been helping local clients (20 mile radius) with their extension buildering jobs for m...

Underpinning ranges from £16,972 (Jones Landscaping based in L30) to £17,556 (AJ Solutions based in CH1), 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 L20 by posting a job with HaMuch and we will send it to extension builders in L20.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bootle | £32 | £223 |
| Underpin A Building near Crosby | £33 | £222 |
| Underpin A Building near Liverpool | £31 | £222 |
| Underpin A Building near Wallasey | £32 | £224 |
| Underpin A Building near Sefton | £33 | £219 |
| Underpin A Building near Birkenhead | £31 | £219 |
| Underpin A Building near Kirkby | £31 | £223 |
| Underpin A Building near Maghull | £33 | £219 |
| Underpin A Building near Wirral | £31 | £219 |
| Underpin A Building near Knowsley | £31 | £222 |
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 - £17,252

Two storey extension - £87,628

Build a timber frame extension - £25,752

Build a swimming pool - £80,752

Single storey extension - £50,040

Side return extension - £38,710

Install an RSJ - £1,952

Outbuilding - £9,752

Build a Mansard loft conversion - £51,752

Loft conversion - £31,425

Build a kitchen extension - £41,752

Hip to gable loft conversion - £41,752

Granny annexe - £86,752

Garden office - £9,752

Convert a Garage - £15,752

Garage - £18,252

Build a flat roof extension - £21,752

Build a dormer loft conversion - £41,752

Concrete foundations - £6,002

Convert a bungalow loft - £28,752

Convert a basement - £34,710