From £17,836
Aerea is a trusted extension builder serving customers in GU16 and the surrounding area. Contact us to today to get a competitive quote for extensi...
From £17,780
Member since August 2026
Relax... you have found a reliable extension builder in GU16. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in GU16 who co...
From £17,692
Need an Extension Builder in GU16? VA Structures has been helping local clients (10 mile radius) with their extension buildering jobs for many year...
From £17,932
DP Services is a fully insured friendly local company which has been trading since 2002 and delivers high quality building work in domestic extensi...
From £17,796
Pinnacle Property Services is a trusted extension builder serving customers in GU16 and the surrounding area. Contact us to today to get a competit...
From £17,804
JD Construction is an established and experienced local extension builder in GU16. Please contact us for a free, no obligation quote and competitiv...
From £17,868
Relax... you have found a reliable extension builder in GU16. BUILDING SPACE UK LTD is a friendly and reliable company based in GU16 who consider n...
From £17,932
Need an Extension Builder in GU16? ZNS Construction has been helping local clients (10 mile radius) with their extension buildering jobs for many y...
From £17,652
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £17,652 (Hawaii Ltd based in TW3) to £17,932 (DP Services based in RG41), 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 GU16 by posting a job with HaMuch and we will send it to extension builders in GU16.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Camberley | £41 | £283 |
| Underpin A Building near Farnborough | £41 | £273 |
| Underpin A Building near Ash Vale | £41 | £277 |
| Underpin A Building near Sandhurst | £41 | £283 |
| Underpin A Building near Aldershot | £41 | £275 |
| Underpin A Building near Fleet | £41 | £270 |
| Underpin A Building near Bracknell | £41 | £286 |
| Underpin A Building near Farnham | £41 | £276 |
| Underpin A Building near Ascot | £41 | £276 |
| Underpin A Building near Bracknell Forest | £41 | £287 |
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 - £17,819

Two storey extension - £88,479

Build a timber frame extension - £26,319

Build a swimming pool - £81,319

Single storey extension - £61,384

Side return extension - £45,091

Install an RSJ - £2,519

Outbuilding - £10,319

Build a Mansard loft conversion - £52,319

Loft conversion - £36,743

Build a kitchen extension - £42,319

Hip to gable loft conversion - £42,319

Granny annexe - £87,319

Garden office - £10,319

Convert a Garage - £16,319

Garage - £18,819

Build a flat roof extension - £22,319

Build a dormer loft conversion - £42,319

Concrete foundations - £6,569

Convert a bungalow loft - £29,319

Convert a basement - £41,091