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Chris Czerwinski
About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...
Relax... you have found a reliable extension builder in High Wycombe. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Hig...
Need to find an Extension Builder near you for all your extension buildering work?
Loudwater Building Services provides a local, trusted ex...
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in High Wycombe. We come highly recommended and provide co...
B.A Ruffle Building Contractor is an established extension buildering business in High Wycombe. We come highly recommended and provide competitive ...
Relax... you have found a reliable extension builder in High Wycombe. Building High Wycombe is a friendly and reliable company based in High Wycomb...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Be Illuminated are here to help customers who need an Extension Builder in High Wycombe. We offer a competitive rate to complete all your extension...
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
GREENWORKS CONSTRUCTION is an established and experienced local extension builder in High Wycombe. Please contact us for a free, no obligation quot...

Outbuilding costs in High Wycombe range from the cheapest of £10,032 (GREENWORKS CONSTRUCTION based in SL7) to the dearest of £10,392 (Jesson ladscaping and construction based in hp15), 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 High Wycombe by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near High Wycombe | £39 | £272 |
| Outbuilding near Wycombe | £40 | £271 |
| Outbuilding near Hazlemere | £40 | £272 |
| Outbuilding near Maidenhead | £41 | £273 |
| Outbuilding near Chesham | £42 | £277 |
| Outbuilding near Gerrards Cross | £43 | £283 |
| Outbuilding near Slough | £42 | £272 |
| Outbuilding near Windsor & Maidenhead | £42 | £272 |
| Outbuilding near Windsor | £41 | £271 |
| Outbuilding near Rickmansworth | £43 | £282 |
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 - £17,698

Two storey extension - £88,298

Build a timber frame extension - £26,198

Build a swimming pool - £81,198

Single storey extension - £58,968

Side return extension - £43,732

Install an RSJ - £2,398

Outbuilding - £10,198

Build a Mansard loft conversion - £52,198

Loft conversion - £35,610

Build a kitchen extension - £42,198

Hip to gable loft conversion - £42,198

Granny annexe - £87,198

Garden office - £10,198

Convert a Garage - £16,198

Garage - £18,698

Build a flat roof extension - £22,198

Build a dormer loft conversion - £42,198

Concrete foundations - £6,448

Convert a bungalow loft - £29,198

Convert a basement - £39,732