From £17,140
Renka is an established and experienced local extension builder in Birmingham. Please contact us for a free, no obligation quote and competitive ra...
From £17,372
Relax... you have found a reliable extension builder in Birmingham. BORDO Design is a friendly and reliable company based in Birmingham who conside...
From £17,204
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in Birmingham. No obligation free quotes a...
From £17,196
Need an Extension Builder in Birmingham? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering job...
From £17,204
Trusted and professional extension builder in Birmingham. Experienced in all extension buildering work and keeping within budget and on quote. Prob...
From £17,196
Laurence Cox is an established and experienced local extension builder in Birmingham. Please contact us for a free, no obligation quote and competi...
From £17,420
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in Birmingham. No obligation free quotes and man...
From £17,436
Kunda Group is a trusted extension builder serving customers in Birmingham and the surrounding area. Contact us to today to get a competitive quote...
From £17,484
Birmingham, B6
Brickfast Builders is an established extension buildering business in Birmingham. We come highly recommended and provide competitive quotes for you...
From £17,212
Mountainview Construction is an established and experienced local extension builder in Birmingham. Please contact us for a free, no obligation quot...

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 Birmingham by posting a job with HaMuch and we will send it to extension builders in Birmingham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Birmingham | £29 | £227 |
| Underpin A Building near Smethwick | £29 | £226 |
| Underpin A Building near Oldbury | £29 | £227 |
| Underpin A Building near West Bromwich | £29 | £227 |
| Underpin A Building near Sutton Coldfield | £29 | £228 |
| 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 Solihull | £29 | £231 |
| Underpin A Building near Wednesbury | £29 | £227 |
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 - £17,286

Two storey extension - £87,680

Build a timber frame extension - £25,786

Build a swimming pool - £80,786

Single storey extension - £50,728

Side return extension - £39,097

Install an RSJ - £1,986

Outbuilding - £9,786

Build a Mansard loft conversion - £51,786

Loft conversion - £31,748

Build a kitchen extension - £41,786

Hip to gable loft conversion - £41,786

Granny annexe - £86,786

Garden office - £9,786

Convert a Garage - £15,786

Garage - £18,286

Build a flat roof extension - £21,786

Build a dormer loft conversion - £41,786

Concrete foundations - £6,036

Convert a bungalow loft - £28,786

Convert a basement - £35,097