From £17,628
Ashtead Builds Ltd are here to help customers who need an Extension Builder in Leatherhead. We offer a competitive rate to complete all your extens...
From £17,372
Leatherhead Ashtead, KT21
Over 30 years experience in carpentery. Have carried a a number of extensions and refurbishments in the surrey aera. Have a large number of satisfi...
From £17,812
Experienced extension builder ready to quote for your work. S JEFFEREY BUILDERS is the best extension builder in Leatherhead. No obligation free qu...
From £18,100
Drytech Roofing Contractors Ltd is an established extension buildering business in Leatherhead. We come highly recommended and provide competitive ...
From £17,388
1st Roofing Specialists Ltd is a trusted extension builder serving customers in Leatherhead and the surrounding area. Contact us to today to get a ...
From £17,844
Relax... you have found a reliable extension builder in Leatherhead. NEWLAND BUILDING SERVICES is a friendly and reliable company based in Leatherh...
From £17,788
SAS Build are here to help customers who need an Extension Builder in Leatherhead. We offer a competitive rate to complete all your extension build...
From £17,684
Trusted and professional extension builder in Leatherhead. Experienced in all extension buildering work and keeping within budget and on quote. NCL...
From £17,836
DTS BUILD LTD. are here to help customers who need an Extension Builder in Leatherhead. We offer a competitive rate to complete all your extension ...
From £17,716
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £17,372 (ARCHERY BUILDING SERVICES LTD based in KT21) to £18,100 (Drytech Roofing Contractors Ltd based in KT22), 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 Leatherhead by posting a job with HaMuch and we will send it to extension builders in Leatherhead.
| 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 Great Bookham | £42 | £281 |
| Underpin A Building near Reigate & Banstead | £41 | £271 |
| Underpin A Building near Esher | £43 | £274 |
| Underpin A Building near Elmbridge | £43 | £277 |
| Underpin A Building near Sutton | £43 | £273 |
| Underpin A Building near Walton-on-Thames | £43 | £277 |
| Underpin A Building near Reigate | £40 | £270 |
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 - £17,717

Two storey extension - £88,325

Build a timber frame extension - £26,217

Build a swimming pool - £81,217

Single storey extension - £59,336

Side return extension - £43,939

Install an RSJ - £2,417

Outbuilding - £10,217

Build a Mansard loft conversion - £52,217

Loft conversion - £35,783

Build a kitchen extension - £42,217

Hip to gable loft conversion - £42,217

Granny annexe - £87,217

Garden office - £10,217

Convert a Garage - £16,217

Garage - £18,717

Build a flat roof extension - £22,217

Build a dormer loft conversion - £42,217

Concrete foundations - £6,467

Convert a bungalow loft - £29,217

Convert a basement - £39,939