From £25,800
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £26,152
Prestige Build Services LTD is a trusted extension builder serving customers in SN1 and the surrounding area. Contact us to today to get a competit...
From £25,536
Need an Extension Builder in SN1? R PEARCE BUILDING has been helping local clients (20 mile radius) with their extension buildering jobs for many y...
From £26,096
MJ solutions is an established and experienced local extension builder in SN1. Please contact us for a free, no obligation quote and competitive r...
From £26,128
Relax... you have found a reliable extension builder in SN1. CHF CONSTRUCTION is a friendly and reliable company based in SN1 who consider no job a...
From £26,056
DSA CONSTRUCTION is an established extension buildering business in SN1. We come highly recommended and provide competitive quotes for your work.
From £25,864
Relax... you have found a reliable extension builder in SN1. A P BUILDING CONTRACTORS LTD is a friendly and reliable company based in SN1 who consi...
From £25,480
MR HOWELL are here to help customers who need an Extension Builder in SN1. We offer a competitive rate to complete all your extension buildering jo...
From £26,152
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...
From £25,952
A D BUILDING SERVICES T/A is a trusted extension builder serving customers in SN1 and the surrounding area. Contact us to today to get a competitiv...

A timber frame extension built in SN1 typically ranges from £25,480 (MR HOWELL based in SN3) to £26,152 (Prestige Build Services LTD based in SN5), 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 SN1 by posting a job with HaMuch and we'll send it to extension builders in SN1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Swindon | £38 | £238 |
| Build A Timber Frame Extension near Stratton St Margaret | £37 | £238 |
| Build A Timber Frame Extension near Thamesdown | £38 | £239 |
| Build A Timber Frame Extension near Calne | £29 | £225 |
| Build A Timber Frame Extension near Vale of White Horse | £36 | £271 |
| 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 Chippenham | £34 | £258 |
| Build A Timber Frame Extension near Witney | £32 | £244 |
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 - £17,422

Two storey extension - £87,882

Build a timber frame extension - £25,922

Build a swimming pool - £80,922

Single storey extension - £53,432

Side return extension - £40,618

Install an RSJ - £2,122

Outbuilding - £9,922

Build a Mansard loft conversion - £51,922

Loft conversion - £33,015

Build a kitchen extension - £41,922

Hip to gable loft conversion - £41,922

Granny annexe - £86,922

Garden office - £9,922

Convert a Garage - £15,922

Garage - £18,422

Build a flat roof extension - £21,922

Build a dormer loft conversion - £41,922

Concrete foundations - £6,172

Convert a bungalow loft - £28,922

Convert a basement - £36,618