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Select your affordable Ampney St Mary extension builder
From £21,816
Need to find an Extension Builder near you for all your extension buildering work?
J SAUNDERS BUILDERS LTD provides a local, trusted extens...
From £21,992
HWM BUILDING SERVICES LTD is an established and experienced local extension builder in Ampney St Mary. Please contact us for a free, no obligation ...
From £21,984
Need to find an Extension Builder near you for all your extension buildering work?
FIVE VALLEYS CONSTRUCTION LTD provides a local, trusted ...
From £21,912
M S CUSS BUILDING CONTRACTOR is a trusted extension builder serving customers in Ampney St Mary and the surrounding area. Contact us to today to ge...
From £21,912
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,176
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,944
Castellum Design and Build are here to help customers who need an Extension Builder in Ampney St Mary. We offer a competitive rate to complete all ...
From £22,096
Castellum is a high-end residential main contractor and developer. We build exceptional homes for discerning clients, architects, and consultants. ...
From £22,040
Trusted and professional extension builder in Ampney St Mary. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £22,064
AGW HOWELL (BUILDER) LTD is a trusted extension builder serving customers in Ampney St Mary and the surrounding area. Contact us to today to get a ...

A flat roof extension ranges from the cheapest of £21,816 (J SAUNDERS BUILDERS LTD based in GL7) to the dearest of £22,176 (J N D BUILDING SERVICES LTD based in GL7), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Ampney St Mary by posting a job with HaMuch. We'll send it to extension builders in Ampney St Mary.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Thamesdown | £31 | £239 |
| Build A Flat Roof Extension near Stratton St Margaret | £32 | £238 |
| Build A Flat Roof Extension near Swindon | £31 | £238 |
| Build A Flat Roof Extension near Stroud | £33 | £249 |
| Build A Flat Roof Extension near Cheltenham | £32 | £250 |
| Build A Flat Roof Extension near Gloucester | £31 | £246 |
| Build A Flat Roof Extension near Quedgeley | £31 | £247 |
| Build A Flat Roof Extension near Witney | £32 | £244 |
| Build A Flat Roof Extension near Vale of White Horse | £36 | £271 |
| Build A Flat Roof Extension 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 - £17,494

Two storey extension - £87,990

Build a timber frame extension - £25,994

Build a swimming pool - £80,994

Single storey extension - £54,872

Side return extension - £41,428

Install an RSJ - £2,194

Outbuilding - £9,994

Build a Mansard loft conversion - £51,994

Loft conversion - £33,690

Build a kitchen extension - £41,994

Hip to gable loft conversion - £41,994

Granny annexe - £86,994

Garden office - £9,994

Convert a Garage - £15,994

Garage - £18,494

Build a flat roof extension - £21,994

Build a dormer loft conversion - £41,994

Concrete foundations - £6,244

Convert a bungalow loft - £28,994

Convert a basement - £37,428