From £25,688
PORTCLIFF BUILDING SERV LTD is an established extension buildering business in BS21. We come highly recommended and provide competitive quotes for ...
From £25,728
Neil Causon & Son is an established and experienced local extension builder in BS21. Please contact us for a free, no obligation quote and competit...
From £25,616
A J READ ESQ is a trusted extension builder serving customers in BS21 and the surrounding area. Contact us to today to get a competitive quote for ...
From £25,784
MICHAEL PANG BUILDING SERVICES is an established and experienced local extension builder in BS21. Please contact us for a free, no obligation quote...
From £25,936
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £26,144
'Imagination was created to deliver perfection. Our business philosophy is that you should never have to compromise on quality. Through our years o...
From £26,032
Need an Extension Builder in BS21? Creative Developments South West has been helping local clients (20 mile radius) with their extension buildering...
From £25,856
Creative Design and Build SW is a reputable company with over 30 years of experience in the construction industry. We are dedicating team providing...
From £26,488
Relax... you have found a reliable extension builder in BS21. MERIT SW LTD is a friendly and reliable company based in BS21 who consider no job as ...
From £25,840
MOORLAND DESIGN & BUILD LTD are here to help customers who need an Extension Builder in BS21. We offer a competitive rate to complete all your exte...

A timber frame extension built in BS21 typically ranges from £25,616 (A J READ ESQ based in BS20) to £26,488 (MERIT SW LTD based in Bs20), 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 BS21 by posting a job with HaMuch and we'll send it to extension builders in BS21.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Clevedon | £29 | £219 |
| Build A Timber Frame Extension near North Somerset | £29 | £216 |
| Build A Timber Frame Extension near Portishead | £29 | £221 |
| Build A Timber Frame Extension near Weston-super-Mare | £29 | £216 |
| Build A Timber Frame Extension near Clifton | £29 | £222 |
| Build A Timber Frame Extension near Bristol | £29 | £222 |
| Build A Timber Frame Extension near Newport | £37 | £200 |
| Build A Timber Frame Extension near Bradley Stoke | £29 | £221 |
| Build A Timber Frame Extension near Cardiff | £30 | £190 |
| Build A Timber Frame Extension near Penarth | £31 | £189 |
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 - £17,411

Two storey extension - £87,867

Build a timber frame extension - £25,911

Build a swimming pool - £80,911

Single storey extension - £53,224

Side return extension - £40,501

Install an RSJ - £2,111

Outbuilding - £9,911

Build a Mansard loft conversion - £51,911

Loft conversion - £32,918

Build a kitchen extension - £41,911

Hip to gable loft conversion - £41,911

Granny annexe - £86,911

Garden office - £9,911

Convert a Garage - £15,911

Garage - £18,411

Build a flat roof extension - £21,911

Build a dormer loft conversion - £41,911

Concrete foundations - £6,161

Convert a bungalow loft - £28,911

Convert a basement - £36,501