CEDAR INTERIORS LIMITED are here to help customers who need an Extension Builder in OX15. We offer a competitive rate to complete all your extensio...
From £9,904
NJM GENERAL BUILDING CONTRACTO is an established and experienced local extension builder in OX15. Please contact us for a free, no obligation quote...
From £10,152
Haras Building Contractors Ltd is a family run business with over 20 years experience within the building trade. We firmly believe in and work from...

Garden offices range from the cheapest of £9,832 (CEDAR INTERIORS LIMITED based in OX16) to the dearest of £10,152 (Haras Building Contractors Ltd based in OX16), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in OX15 by posting a job with HaMuch. We'll send it to extension builders in OX15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Banbury | £33 | £239 |
| Garden Office near Cherwell | £35 | £249 |
| Garden Office near Bicester | £35 | £249 |
| Garden Office near Stratford-upon-Avon | £27 | £215 |
| Garden Office near Stratford-on-Avon | £27 | £215 |
| Garden Office near Daventry | £31 | £230 |
| Garden Office near Witney | £32 | £244 |
| Garden Office near Leamington Spa | £27 | £212 |
| Garden Office near Warwick | £28 | £213 |
| Garden Office near Oxford | £37 | £261 |
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 - £17,463

Two storey extension - £87,944

Build a timber frame extension - £25,963

Build a swimming pool - £80,963

Single storey extension - £54,253

Side return extension - £41,080

Install an RSJ - £2,163

Outbuilding - £9,963

Build a Mansard loft conversion - £51,963

Loft conversion - £33,400

Build a kitchen extension - £41,963

Hip to gable loft conversion - £41,963

Granny annexe - £86,963

Garden office - £9,963

Convert a Garage - £15,963

Garage - £18,463

Build a flat roof extension - £21,963

Build a dormer loft conversion - £41,963

Concrete foundations - £6,213

Convert a bungalow loft - £28,963

Convert a basement - £37,080