From £10,000
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 £9,800
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £9,960
Deadsmooth Plastering & Building Co is a trusted extension builder serving customers in Ampney St Mary and the surrounding area. Contact us to toda...
From £9,880
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,000
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 £9,776
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,184
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,152
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 £9,536
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 £10,096
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...

Outbuilding costs in Ampney St Mary range from the cheapest of £9,536 (R PEARCE BUILDING based in SN15) to the dearest of £10,184 (Sunshine Builders Services based in GL4), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Ampney St Mary by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Thamesdown | £38 | £239 |
| Outbuilding near Stratton St Margaret | £37 | £238 |
| Outbuilding near Swindon | £38 | £238 |
| Outbuilding near Stroud | £33 | £249 |
| Outbuilding near Cheltenham | £32 | £250 |
| Outbuilding near Gloucester | £31 | £236 |
| Outbuilding near Quedgeley | £32 | £247 |
| Outbuilding near Witney | £32 | £244 |
| Outbuilding near Vale of White Horse | £36 | £271 |
| Outbuilding 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