John Howell
MR HOWELL are here to help customers who need an Extension Builder in SN3. We offer a competitive rate to complete all your extension buildering jo...
Need to find an Extension Builder near you for all your extension buildering work?
A S A BUILDING SERVICES LTD provides a local, trusted ex...
A D BUILDING SERVICES T/A is a trusted extension builder serving customers in SN3 and the surrounding area. Contact us to today to get a competitiv...
We have a skilled and dedicated team of professional tradesmen to carry out all your requirements. Whether you are looking to build, extend or upgr...
From £17,956
Bob Watts
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,196
CORE CONSTRUCTION is an established extension buildering business in SN3. We come highly recommended and provide competitive quotes for your work.<...
From £18,388
ABC Builders is a trusted extension builder serving customers in SN3 and the surrounding area. Contact us to today to get a competitive quote for e...
From £18,244
Relax... you have found a reliable extension builder in SN3. Highworth Felt Roofing Limited is a friendly and reliable company based in SN3 who con...
From £18,372
Craig Donnelly Building Contractors Ltd is a trusted extension builder serving customers in SN3 and the surrounding area. Contact us to today to ge...
From £18,644
BROWNS TOTAL DESIGN & BUILD LTD is an established and experienced local extension builder in SN3. Please contact us for a free, no obligation quote...

Builders charge between £17,956 (Watts Builders based in SN25) and £18,652 (A S A BUILDING SERVICES LTD based in SN4) in SN3 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in SN3 by posting a job with HaMuch and we will send it to extension builders in SN3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garage near Swindon | £31 | £238 |
| Garage near Stratton St Margaret | £32 | £238 |
| Garage near Thamesdown | £31 | £239 |
| Garage near Vale of White Horse | £36 | £271 |
| Garage near Calne | £29 | £225 |
| Garage near West Wiltshire | £32 | £242 |
| Garage near North Wiltshire | £32 | £242 |
| Garage near Devizes | £32 | £242 |
| Garage near Witney | £32 | £244 |
| Garage near Chippenham | £34 | £258 |
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 - £17,346

Two storey extension - £87,768

Build a timber frame extension - £25,846

Build a swimming pool - £80,846

Single storey extension - £51,912

Side return extension - £39,763

Install an RSJ - £2,046

Outbuilding - £9,846

Build a Mansard loft conversion - £51,846

Loft conversion - £32,303

Build a kitchen extension - £41,846

Hip to gable loft conversion - £41,846

Granny annexe - £86,846

Garden office - £9,846

Convert a Garage - £15,846

Garage - £18,346

Build a flat roof extension - £21,846

Build a dormer loft conversion - £41,846

Concrete foundations - £6,096

Convert a bungalow loft - £28,846

Convert a basement - £35,763