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Select your affordable RH4 extension builder
Garage Door Repairs is an established extension buildering business in RH4. We come highly recommended and provide competitive quotes for your work...
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 £17,932
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 £17,644
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...

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 | £44 | £275 |
| Underpin A Building near Redhill | £41 | £269 |
| Underpin A Building near Horley | £38 | £258 |
| Underpin A Building near Ewell | £44 | £275 |
| Underpin A Building near Esher | £43 | £274 |
| Underpin A Building near Elmbridge | £44 | £278 |
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 - £17,752

Two storey extension - £88,377

Build a timber frame extension - £26,252

Build a swimming pool - £81,252

Single storey extension - £60,031

Side return extension - £44,330

Install an RSJ - £2,452

Outbuilding - £10,252

Build a Mansard loft conversion - £52,252

Loft conversion - £36,108

Build a kitchen extension - £42,252

Hip to gable loft conversion - £42,252

Granny annexe - £87,252

Garden office - £10,252

Convert a Garage - £16,252

Garage - £18,752

Build a flat roof extension - £22,252

Build a dormer loft conversion - £42,252

Concrete foundations - £6,502

Convert a bungalow loft - £29,252

Convert a basement - £40,330