From £17,204
AJ Home Improvements is an established extension buildering business in B8. We come highly recommended and provide competitive quotes for your work...
From £17,204
Trusted and professional extension builder in B8. Experienced in all extension buildering work and keeping within budget and on quote. Probuild360 ...
From £17,364
Need to find an Extension Builder near you for all your extension buildering work?
LC BUILDING SERVICES provides a local, trusted extension...
From £17,420
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B8. No obligation free quotes and many happy ...
From £17,324
Reliable person 25 years experience
if you look on a website rated people and have a look at my ratings
From £17,484
Brickfast Builders is an established extension buildering business in B8. We come highly recommended and provide competitive quotes for your work.<...
From £17,196
Laurence Cox is an established and experienced local extension builder in B8. Please contact us for a free, no obligation quote and competitive rat...
From £17,484
Need to find an Extension Builder near you for all your extension buildering work?
Dayfos Properties Ltd provides a local, trusted extensio...
From £17,484
Fletcher's Building & Maintenance are a family owned business that understands, in order to achieve our continued success our customers and the...
From £17,140
Renka is an established and experienced local extension builder in B8. Please contact us for a free, no obligation quote and competitive rates. Cov...

Underpinning ranges from £17,140 (Renka based in B19) to £17,484 (Brickfast Builders based in B6), 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 B8 by posting a job with HaMuch and we will send it to extension builders in B8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Birmingham | £29 | £227 |
| Underpin A Building near Sutton Coldfield | £29 | £228 |
| Underpin A Building near Smethwick | £29 | £226 |
| Underpin A Building near Solihull | £29 | £231 |
| Underpin A Building near Oldbury | £29 | £227 |
| Underpin A Building near West Bromwich | £29 | £227 |
| Underpin A Building near Sandwell | £29 | £229 |
| Underpin A Building near Halesowen | £29 | £227 |
| Underpin A Building near Rowley Regis | £29 | £226 |
| Underpin A Building near Knowle | £31 | £241 |
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 - £17,330

Two storey extension - £87,746

Build a timber frame extension - £25,830

Build a swimming pool - £80,830

Single storey extension - £51,608

Side return extension - £39,592

Install an RSJ - £2,030

Outbuilding - £9,830

Build a Mansard loft conversion - £51,830

Loft conversion - £32,160

Build a kitchen extension - £41,830

Hip to gable loft conversion - £41,830

Granny annexe - £86,830

Garden office - £9,830

Convert a Garage - £15,830

Garage - £18,330

Build a flat roof extension - £21,830

Build a dormer loft conversion - £41,830

Concrete foundations - £6,080

Convert a bungalow loft - £28,830

Convert a basement - £35,592