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 £25,456
Bob Watts
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £25,696
CORE CONSTRUCTION is an established extension buildering business in SN3. We come highly recommended and provide competitive quotes for your work.<...
From £25,888
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 £25,744
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 £25,872
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 £26,144
BROWNS TOTAL DESIGN & BUILD LTD is an established and experienced local extension builder in SN3. Please contact us for a free, no obligation quote...

A timber frame extension built in SN3 typically ranges from £25,456 (Watts Builders based in SN25) to £26,152 (A S A BUILDING SERVICES LTD based in SN4), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension 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 a timber frame extension in SN3 by posting a job with HaMuch and we'll send it to extension builders in SN3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Swindon | £31 | £238 |
| Build A Timber Frame Extension near Stratton St Margaret | £32 | £238 |
| Build A Timber Frame Extension near Thamesdown | £31 | £239 |
| Build A Timber Frame Extension near Vale of White Horse | £36 | £271 |
| Build A Timber Frame Extension near Calne | £29 | £225 |
| Build A Timber Frame Extension near West Wiltshire | £32 | £242 |
| Build A Timber Frame Extension near North Wiltshire | £32 | £242 |
| Build A Timber Frame Extension near Devizes | £32 | £242 |
| Build A Timber Frame Extension near Witney | £32 | £244 |
| Build A Timber Frame Extension 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