From £10,320
Chris Warren Construction Ltd is an established extension buildering business in HP16. We come highly recommended and provide competitive quotes fo...
From £10,456
AQUITAINE(BUILDING SERVICES)LT is an established and experienced local extension builder in HP16. Please contact us for a free, no obligation quote...
From £10,352
CONCEPT BUILD are here to help customers who need an Extension Builder in HP16. We offer a competitive rate to complete all your extension builderi...
From £10,368
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
From £10,128
Trusted and professional extension builder in HP16. Experienced in all extension buildering work and keeping within budget and on quote. Steve Knig...
From £10,392
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,072
As a full-service provider, we are dedicated to delivering an outstanding fit out experience for all of our customers. With our innovative designs,...
From £9,960
N J Decorating is an established extension buildering business in HP16. We come highly recommended and provide competitive quotes for your work.
From £10,272
Trusted and professional extension builder in HP16. Experienced in all extension buildering work and keeping within budget and on quote. G T Builde...
From £11,448
Need an Extension Builder in HP16? Bantry Construction Limited has been helping local clients (20 mile radius) with their extension buildering jobs...

Outbuilding costs in HP16 range from the cheapest of £9,960 (N J Decorating based in HP15) to the dearest of £11,448 (Bantry Construction Limited based in HP10), but these are just estimates.
Comparing extension builders estimates for building an outbuilding 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 an outbuilding in HP16 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Hazlemere | £40 | £272 |
| Outbuilding near Chesham | £42 | £277 |
| Outbuilding near Wycombe | £39 | £271 |
| Outbuilding near High Wycombe | £39 | £272 |
| Outbuilding near Berkhamsted | £41 | £263 |
| Outbuilding near Aylesbury | £42 | £270 |
| Outbuilding near Dacorum | £42 | £269 |
| Outbuilding near Gerrards Cross | £43 | £282 |
| Outbuilding near Hemel Hempstead | £42 | £270 |
| Outbuilding near Rickmansworth | £42 | £278 |
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 - £17,877

Two storey extension - £88,565

Build a timber frame extension - £26,377

Build a swimming pool - £81,377

Single storey extension - £62,536

Side return extension - £45,739

Install an RSJ - £2,577

Outbuilding - £10,377

Build a Mansard loft conversion - £52,377

Loft conversion - £37,283

Build a kitchen extension - £42,377

Hip to gable loft conversion - £42,377

Granny annexe - £87,377

Garden office - £10,377

Convert a Garage - £16,377

Garage - £18,877

Build a flat roof extension - £22,377

Build a dormer loft conversion - £42,377

Concrete foundations - £6,627

Convert a bungalow loft - £29,377

Convert a basement - £41,739