From £16,796
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 WS4. We come highly recommended and provide competitive quotes for your work.<...
From £17,268
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,252
Need an Extension Builder in WS4? C A MILLS BUILDING CONTR LTD has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,260
RM Builders is an established and experienced local extension builder in WS4. Please contact us for a free, no obligation quote and competitive rat...
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 £17,164
Experienced extension builder ready to quote for your work. S B Evans Bricklaying Contractor Ltd is the best extension builder in WS4. No obligatio...
From £17,372
SBS BUILDING & MAINTENANCE LTD is an established extension buildering business in WS4. We come highly recommended and provide competitive quotes fo...
From £17,508
Empire Builders is an established and experienced local extension builder in WS4. Please contact us for a free, no obligation quote and competitive...

Underpinning ranges from £16,796 (Saxonworld Ltd based in WS9) to £17,508 (Empire Builders based in WS6), 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 WS4 by posting a job with HaMuch and we will send it to extension builders in WS4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Walsall | £29 | £226 |
| Underpin A Building near Bloxwich | £28 | £225 |
| Underpin A Building near Brownhills | £28 | £225 |
| Underpin A Building near Darlaston | £29 | £226 |
| Underpin A Building near Wednesbury | £29 | £227 |
| Underpin A Building near Willenhall | £29 | £225 |
| Underpin A Building near Sandwell | £29 | £229 |
| Underpin A Building near Burntwood | £29 | £229 |
| Underpin A Building near Bilston | £29 | £226 |
| Underpin A Building near West Bromwich | £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 - £17,288

Two storey extension - £87,682

Build a timber frame extension - £25,788

Build a swimming pool - £80,788

Single storey extension - £50,760

Side return extension - £39,115

Install an RSJ - £1,988

Outbuilding - £9,788

Build a Mansard loft conversion - £51,788

Loft conversion - £31,763

Build a kitchen extension - £41,788

Hip to gable loft conversion - £41,788

Granny annexe - £86,788

Garden office - £9,788

Convert a Garage - £15,788

Garage - £18,288

Build a flat roof extension - £21,788

Build a dormer loft conversion - £41,788

Concrete foundations - £6,038

Convert a bungalow loft - £28,788

Convert a basement - £35,115