From £16,460
Member since November 2019
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,156
Hello So we do not work and almost any work and it works very well and qualitatively If you are interested we can work in the future
From £17,292
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
From £17,276
Relax... you have found a reliable extension builder in Ainsworth. David Anderson Builders is a friendly and reliable company based in Ainsworth wh...
From £17,460
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
From £17,348
Trusted and professional extension builder in Ainsworth. Experienced in all extension buildering work and keeping within budget and on quote. We Bu...
From £17,108
Need an Extension Builder in Ainsworth? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many y...
From £17,132
Trusted and professional extension builder in Ainsworth. Experienced in all extension buildering work and keeping within budget and on quote. Fit-o...
From £17,548
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,460 (Aquatec Builder based in OL10) to £17,548 (Northern Garage Conversion based in OL9), 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 Ainsworth by posting a job with HaMuch and we will send it to extension builders in Ainsworth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bolton | £31 | £219 |
| Underpin A Building near Farnworth | £30 | £219 |
| Underpin A Building near Radcliffe | £30 | £220 |
| Underpin A Building near Little Hulton | £30 | £220 |
| Underpin A Building near Bury | £30 | £220 |
| Underpin A Building near Whitefield | £31 | £229 |
| Underpin A Building near Westhoughton | £31 | £222 |
| Underpin A Building near Swinton | £32 | £235 |
| Underpin A Building near Atherton | £31 | £223 |
| Underpin A Building near Horwich | £30 | £219 |
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 - £17,146

Two storey extension - £87,470

Build a timber frame extension - £25,646

Build a swimming pool - £80,646

Single storey extension - £47,928

Side return extension - £37,522

Install an RSJ - £1,846

Outbuilding - £9,646

Build a Mansard loft conversion - £51,646

Loft conversion - £30,435

Build a kitchen extension - £41,646

Hip to gable loft conversion - £41,646

Granny annexe - £86,646

Garden office - £9,646

Convert a Garage - £15,646

Garage - £18,146

Build a flat roof extension - £21,646

Build a dormer loft conversion - £41,646

Concrete foundations - £5,896

Convert a bungalow loft - £28,646

Convert a basement - £33,522