From £17,932
Relax... you have found a reliable extension builder in RH4. Atp Building Services is a friendly and reliable company based in RH4 who consider no ...
From £17,412
Experienced extension builder ready to quote for your work. Mole Valley Builders is the best extension builder in RH4. No obligation free quotes an...
From £17,668
Established in 2013, Mole Valley Builders is a family-owned, independent building company. Our team shares more than 40 years of industry experienc...
From £17,980
Stovetech Surrey are professional installers of multi-fuel and wood burning stoves.We are OFTEC registered ensuring that all of our work co...
From £17,908
Garage Door Repairs is an established extension buildering business in RH4. We come highly recommended and provide competitive quotes for your work...
From £17,644
Surrey Hills Construction is an established and experienced local extension builder in RH4. Please contact us for a free, no obligation quote and c...
From £18,028
Founded in 2011 by Clive Bordoli and Jim Kelting, we set out to form and lead a team of tradesmen who could share our work ethic and attention to d...
From £17,628
Need an Extension Builder in RH4? Albany Roofing & Guttering has been helping local clients (10 mile radius) with their extension buildering jobs f...
From £17,900
Please visit our web site at for full detailed photos of previous projects and clients testimonials.
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Underpinning ranges from £17,412 (Mole Valley Builders based in RH5) to £18,028 (Surrey Hills Construction based in RH5), 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 RH4 by posting a job with HaMuch and we will send it to extension builders in RH4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Great Bookham | £42 | £281 |
| Underpin A Building near Reigate | £40 | £270 |
| Underpin A Building near Tadworth | £41 | £271 |
| Underpin A Building near Reigate & Banstead | £41 | £271 |
| Underpin A Building near Epsom | £43 | £274 |
| Underpin A Building near Redhill | £41 | £269 |
| Underpin A Building near Horley | £38 | £258 |
| Underpin A Building near Ewell | £43 | £274 |
| Underpin A Building near Esher | £43 | £274 |
| Underpin A Building near Elmbridge | £43 | £277 |
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 - £17,766

Two storey extension - £88,400

Build a timber frame extension - £26,266

Build a swimming pool - £81,266

Single storey extension - £60,328

Side return extension - £44,497

Install an RSJ - £2,466

Outbuilding - £10,266

Build a Mansard loft conversion - £52,266

Loft conversion - £36,248

Build a kitchen extension - £42,266

Hip to gable loft conversion - £42,266

Granny annexe - £87,266

Garden office - £10,266

Convert a Garage - £16,266

Garage - £18,766

Build a flat roof extension - £22,266

Build a dormer loft conversion - £42,266

Concrete foundations - £6,516

Convert a bungalow loft - £29,266

Convert a basement - £40,497