From £17,388
1st Roofing Specialists Ltd is a trusted extension builder serving customers in Epsom and the surrounding area. Contact us to today to get a compet...
From £17,684
Epsom, KT18
Trusted and professional extension builder in Epsom. Experienced in all extension buildering work and keeping within budget and on quote. NCL CONST...
From £17,788
SAS Build are here to help customers who need an Extension Builder in Epsom. We offer a competitive rate to complete all your extension buildering ...
From £17,596
Epsom Surrey, KT18
Me is an established extension buildering business in Epsom. We come highly recommended and provide competitive quotes for your work.
From £17,836
DTS BUILD LTD. are here to help customers who need an Extension Builder in Epsom. We offer a competitive rate to complete all your extension builde...
From £17,060
Experienced extension builder ready to quote for your work. Priority Roofbuild Ltd is the best extension builder in Epsom. No obligation free quote...
From £17,564
Grand Nests is an established extension buildering business in Epsom. We come highly recommended and provide competitive quotes for your work.
...From £17,604
Epsom, KT18
Relax... you have found a reliable extension builder in Epsom. M & R BUILDING SERVICES is a friendly and reliable company based in Epsom who consid...
From £17,828
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,468
Epsom, KT18
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £17,060 (Priority Roofbuild Ltd based in KT17) to £17,836 (DTS BUILD LTD. based in KT18), 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 Epsom by posting a job with HaMuch and we will send it to extension builders in Epsom.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Epsom | £43 | £274 |
| Underpin A Building near Ewell | £43 | £274 |
| Underpin A Building near Tadworth | £41 | £271 |
| Underpin A Building near Reigate & Banstead | £41 | £271 |
| Underpin A Building near Sutton | £43 | £273 |
| Underpin A Building near Esher | £43 | £274 |
| Underpin A Building near Great Bookham | £42 | £281 |
| Underpin A Building near Reigate | £40 | £270 |
| Underpin A Building near Kingston Upon Thames | £43 | £271 |
| Underpin A Building near Redhill | £41 | £269 |
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 - £17,582

Two storey extension - £88,122

Build a timber frame extension - £26,082

Build a swimming pool - £81,082

Single storey extension - £56,632

Side return extension - £42,418

Install an RSJ - £2,282

Outbuilding - £10,082

Build a Mansard loft conversion - £52,082

Loft conversion - £34,515

Build a kitchen extension - £42,082

Hip to gable loft conversion - £42,082

Granny annexe - £87,082

Garden office - £10,082

Convert a Garage - £16,082

Garage - £18,582

Build a flat roof extension - £22,082

Build a dormer loft conversion - £42,082

Concrete foundations - £6,332

Convert a bungalow loft - £29,082

Convert a basement - £38,418