From £17,484
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,340
Need to find an Extension Builder near you for all your extension buildering work?
Willbuild provides a local, trusted extension buildering...
From £17,436
Zygi&Bob Builders is an established extension buildering business in B29. We come highly recommended and provide competitive quotes for your work.<...
From £17,444
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,204
Prompt .tidy .exspearianced.quality of work
From £17,372
Welcome to WWM Property Solutions, where we specialize in creating exceptional outdoor and indoor spaces tailored to your unique lifestyle. As a le...
From £17,196
Trusted and professional extension builder in B29. Experienced in all extension buildering work and keeping within budget and on quote. Byrne Roofi...
From £17,460
Mark Anthony Builders are here to help customers who need an Extension Builder in B29. We offer a competitive rate to complete all your extension b...
From £17,444
Experienced extension builder ready to quote for your work. TKB Construction is the best extension builder in B29. No obligation free quotes and ma...
From £18,300
Member since December 2022
Hi, My name is Gus Sperin. I am self-employed electrician, and I have been running my business since 2010. I have been in the electrical ...

Underpinning ranges from £17,196 (Byrne Roofing & Property Repairs based in CV6) to £18,300 (Sperin Interiors based in B66), 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 B29 by posting a job with HaMuch and we will send it to extension builders in B29.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Oldbury | £29 | £227 |
| Underpin A Building near Halesowen | £29 | £227 |
| Underpin A Building near Smethwick | £29 | £226 |
| Underpin A Building near Birmingham | £29 | £227 |
| Underpin A Building near Rowley Regis | £29 | £226 |
| Underpin A Building near West Bromwich | £29 | £227 |
| Underpin A Building near Sandwell | £29 | £229 |
| Underpin A Building near Solihull | £29 | £231 |
| Underpin A Building near Dudley | £28 | £225 |
| Underpin A Building near Brierley Hill | £28 | £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 - £17,468

Two storey extension - £87,952

Build a timber frame extension - £25,968

Build a swimming pool - £80,968

Single storey extension - £54,360

Side return extension - £41,140

Install an RSJ - £2,168

Outbuilding - £9,968

Build a Mansard loft conversion - £51,968

Loft conversion - £33,450

Build a kitchen extension - £41,968

Hip to gable loft conversion - £41,968

Granny annexe - £86,968

Garden office - £9,968

Convert a Garage - £15,968

Garage - £18,468

Build a flat roof extension - £21,968

Build a dormer loft conversion - £41,968

Concrete foundations - £6,218

Convert a bungalow loft - £28,968

Convert a basement - £37,140