From £16,956
DAVID LANE BUILDERS is an established and experienced local extension builder in NR12. Please contact us for a free, no obligation quote and compet...
From £17,172
Relax... you have found a reliable extension builder in NR12. B C BUILDERS is a friendly and reliable company based in NR12 who consider no job as ...
From £17,308
Trusted and professional extension builder in NR12. Experienced in all extension buildering work and keeping within budget and on quote. L & L CONS...
From £17,052
Relax... you have found a reliable extension builder in NR12. Steven Folkard (Self Build) is a friendly and reliable company based in NR12 who cons...
From £17,212
Experienced extension builder ready to quote for your work. BRAND CONSTRUCTION LTD is the best extension builder in NR12. No obligation free quotes...
From £16,556
Being a general builder it's a great satisfaction to see costumers happy with nice job and on the time booked. Either way you are just painting or ...
From £17,140
Donris Limited are here to help customers who need an Extension Builder in NR12. We offer a competitive rate to complete all your extension builder...
From £17,204
Y CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in NR12. We offer a competitive rate to complete all your extension...
From £16,980
Need an Extension Builder in NR12? Bespoke Build Solutions has been helping local clients (20 mile radius) with their extension buildering jobs for...

Underpinning ranges from £16,556 (Maxxrenovations, extensions based in NR29) to £17,308 (L & L CONSTRUCTION based in NR28), 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 NR12 by posting a job with HaMuch and we will send it to extension builders in NR12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Great Yarmouth | £13 | £132 |
| Underpin A Building near Broadland | £24 | £194 |
| Underpin A Building near Norwich | £25 | £200 |
| Underpin A Building near Gorleston-on-Sea | £25 | £205 |
| Underpin A Building near Lowestoft | £24 | £197 |
| Underpin A Building near Dereham | £25 | £203 |
| Underpin A Building near Waveney | £24 | £200 |
| Underpin A Building near Breckland | £28 | £248 |
| Underpin A Building near Thetford | £42 | £277 |
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 - £17,074

Two storey extension - £87,362

Build a timber frame extension - £25,574

Build a swimming pool - £80,574

Single storey extension - £46,488

Side return extension - £36,712

Install an RSJ - £1,774

Outbuilding - £9,574

Build a Mansard loft conversion - £51,574

Loft conversion - £29,760

Build a kitchen extension - £41,574

Hip to gable loft conversion - £41,574

Granny annexe - £86,574

Garden office - £9,574

Convert a Garage - £15,574

Garage - £18,074

Build a flat roof extension - £21,574

Build a dormer loft conversion - £41,574

Concrete foundations - £5,824

Convert a bungalow loft - £28,574

Convert a basement - £32,712