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 £87,856
NJM GENERAL BUILDING CONTRACTO is an established and experienced local extension builder in OX15. Please contact us for a free, no obligation quote...
From £88,228
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...

Costs range from £87,748 (CEDAR INTERIORS LIMITED based in OX16) to £88,228 (Haras Building Contractors Ltd based in OX16), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Banbury | £33 | £239 |
| Two Storey Extension near Cherwell | £35 | £249 |
| Two Storey Extension near Bicester | £35 | £249 |
| Two Storey Extension near Stratford-upon-Avon | £27 | £215 |
| Two Storey Extension near Stratford-on-Avon | £27 | £215 |
| Two Storey Extension near Daventry | £31 | £230 |
| Two Storey Extension near Witney | £32 | £244 |
| Two Storey Extension near Leamington Spa | £27 | £212 |
| Two Storey Extension near Warwick | £28 | £213 |
| Two Storey Extension 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