From £17,260
We are a company based in South London, with a strong will to work and to do the best job possible every tine we start a job (big or small) because...
From £17,796
Chertsey Lyne village, KT16
Relax... you have found a reliable extension builder in Chertsey. London Rated Roofing is a friendly and reliable company based in Chertsey who con...
From £17,172
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,508
Chertsey, KT16
Need to find an Extension Builder near you for all your extension buildering work?
GS Wood Building Services provides a local, trusted exte...
From £17,636
EcoWoodDesign are here to help customers who need an Extension Builder in Chertsey. We offer a competitive rate to complete all your extension buil...
From £17,964
Kandy Build and Construction Ltd is an established extension buildering business in Chertsey. We come highly recommended and provide competitive qu...
From £17,916
Need to find an Extension Builder near you for all your extension buildering work?
Tolwey provides a local, trusted extension buildering se...
From £17,580
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,580
General Building, Landscaping and Driveway Specialists. Some of the tasks we complete tasks such as refurbishments, extensions and conversions to d...
From £17,812
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...

Underpinning ranges from £17,172 (Inspiral Construction based in KT16) to £17,964 (Kandy Build and Construction Ltd based in TW20), 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 Chertsey by posting a job with HaMuch and we will send it to extension builders in Chertsey.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near New Haw | £43 | £273 |
| Underpin A Building near Staines-upon-Thames | £42 | £269 |
| Underpin A Building near Egham | £42 | £266 |
| Underpin A Building near Walton-on-Thames | £43 | £277 |
| Underpin A Building near Sunbury-on-Thames | £42 | £279 |
| Underpin A Building near Elmbridge | £43 | £277 |
| Underpin A Building near Woking | £43 | £277 |
| Underpin A Building near Ascot | £41 | £276 |
| Underpin A Building near West Molesey | £43 | £279 |
| Underpin A Building near Esher | £43 | £274 |
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 - £17,622

Two storey extension - £88,184

Build a timber frame extension - £26,122

Build a swimming pool - £81,122

Single storey extension - £57,448

Side return extension - £42,877

Install an RSJ - £2,322

Outbuilding - £10,122

Build a Mansard loft conversion - £52,122

Loft conversion - £34,898

Build a kitchen extension - £42,122

Hip to gable loft conversion - £42,122

Granny annexe - £87,122

Garden office - £10,122

Convert a Garage - £16,122

Garage - £18,622

Build a flat roof extension - £22,122

Build a dormer loft conversion - £42,122

Concrete foundations - £6,372

Convert a bungalow loft - £29,122

Convert a basement - £38,877