Chris Czerwinski
About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...
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Costs range from £88,048 (GREENWORKS CONSTRUCTION based in SL7) to £88,588 (Jesson ladscaping and construction based in hp15), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to High Wycombe.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near High Wycombe | £39 | £272 |
| Two Storey Extension near Wycombe | £39 | £271 |
| Two Storey Extension near Hazlemere | £40 | £272 |
| Two Storey Extension near Maidenhead | £41 | £273 |
| Two Storey Extension near Chesham | £42 | £277 |
| Two Storey Extension near Gerrards Cross | £43 | £282 |
| Two Storey Extension near Slough | £42 | £272 |
| Two Storey Extension near Windsor & Maidenhead | £42 | £272 |
| Two Storey Extension near Windsor | £41 | £271 |
| Two Storey Extension 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 - £17,703

Two storey extension - £88,305

Build a timber frame extension - £26,203

Build a swimming pool - £81,203

Single storey extension - £59,064

Side return extension - £43,786

Install an RSJ - £2,403

Outbuilding - £10,203

Build a Mansard loft conversion - £52,203

Loft conversion - £35,655

Build a kitchen extension - £42,203

Hip to gable loft conversion - £42,203

Granny annexe - £87,203

Garden office - £10,203

Convert a Garage - £16,203

Garage - £18,703

Build a flat roof extension - £22,203

Build a dormer loft conversion - £42,203

Concrete foundations - £6,453

Convert a bungalow loft - £29,203

Convert a basement - £39,786