From £17,500
MID Construct is an established and experienced local extension builder in Ampney St Mary. Please contact us for a free, no obligation quote and c...
From £17,300
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,460
Deadsmooth Plastering & Building Co is a trusted extension builder serving customers in Ampney St Mary and the surrounding area. Contact us to toda...
From £17,380
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,500
L&P Developments Ltd is an established and experienced local extension builder in Ampney St Mary. Please contact us for a free, no obligation quot...
From £17,276
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,684
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,652
Prestige Build Services LTD is a trusted extension builder serving customers in Ampney St Mary and the surrounding area. Contact us to today to get...
From £17,036
Need an Extension Builder in Ampney St Mary? R PEARCE BUILDING has been helping local clients (20 mile radius) with their extension buildering jobs...
From £17,596
MJ solutions is an established and experienced local extension builder in Ampney St Mary. Please contact us for a free, no obligation quote and co...

Underpinning ranges from £17,036 (R PEARCE BUILDING based in SN15) to £17,684 (Sunshine Builders Services based in GL4), 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 Ampney St Mary by posting a job with HaMuch and we will send it to extension builders in Ampney St Mary.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Thamesdown | £38 | £239 |
| Underpin A Building near Stratton St Margaret | £37 | £238 |
| Underpin A Building near Swindon | £38 | £238 |
| Underpin A Building near Stroud | £33 | £249 |
| Underpin A Building near Cheltenham | £32 | £250 |
| Underpin A Building near Gloucester | £31 | £236 |
| Underpin A Building near Quedgeley | £32 | £247 |
| Underpin A Building near Witney | £32 | £244 |
| Underpin A Building near Vale of White Horse | £36 | £271 |
| Underpin A Building near Calne | £29 | £225 |
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 - £17,438

Two storey extension - £87,908

Build a timber frame extension - £25,938

Build a swimming pool - £80,938

Single storey extension - £53,768

Side return extension - £40,807

Install an RSJ - £2,138

Outbuilding - £9,938

Build a Mansard loft conversion - £51,938

Loft conversion - £33,173

Build a kitchen extension - £41,938

Hip to gable loft conversion - £41,938

Granny annexe - £86,938

Garden office - £9,938

Convert a Garage - £15,938

Garage - £18,438

Build a flat roof extension - £21,938

Build a dormer loft conversion - £41,938

Concrete foundations - £6,188

Convert a bungalow loft - £28,938

Convert a basement - £36,807