Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Banstead. No obligation free qu...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Gani Bush
Gb construction are here to help customers who need an Extension Builder in Banstead. We offer a competitive rate to complete all your extension b...
Sebastian Banga
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
Trusted and professional extension builder in Banstead. Experienced in all extension buildering work and keeping within budget and on quote. CSJ Bu...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
PW Construction & Renovation Ltd is a trusted extension builder serving customers in Banstead and the surrounding area. Contact us to today to get ...
John Mcdonagh
Watch our short video highlighting all our expertise and services here:
more than 10 y...
Albdeco Builders & Decorators Ltd is a trusted extension builder serving customers in Banstead and the surrounding area. Contact us to today to get...

Underpinning ranges from £17,436 (Masters Property Services based in SM5) to £18,700 (Banga Decoration based in CR7), 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 Banstead by posting a job with HaMuch and we will send it to extension builders in Banstead.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Epsom | £43 | £274 |
| Underpin A Building near Reigate & Banstead | £41 | £271 |
| Underpin A Building near Tadworth | £41 | £271 |
| Underpin A Building near Ewell | £43 | £274 |
| Underpin A Building near Sutton | £43 | £273 |
| Underpin A Building near Merton | £43 | £272 |
| Underpin A Building near Caterham | £43 | £271 |
| Underpin A Building near Reigate | £40 | £270 |
| Underpin A Building near Redhill | £41 | £269 |
| Underpin A Building near Croydon | £42 | £267 |
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 - £17,781

Two storey extension - £88,421

Build a timber frame extension - £26,281

Build a swimming pool - £81,281

Single storey extension - £60,616

Side return extension - £44,659

Install an RSJ - £2,481

Outbuilding - £10,281

Build a Mansard loft conversion - £52,281

Loft conversion - £36,383

Build a kitchen extension - £42,281

Hip to gable loft conversion - £42,281

Granny annexe - £87,281

Garden office - £10,281

Convert a Garage - £16,281

Garage - £18,781

Build a flat roof extension - £22,281

Build a dormer loft conversion - £42,281

Concrete foundations - £6,531

Convert a bungalow loft - £29,281

Convert a basement - £40,659