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CEDAR INTERIORS LIMITED are here to help customers who need an Extension Builder in OX17. We offer a competitive rate to complete all your extensio...
From £21,784
garry
ADVANCED BUILDING CONCEPTS is an established and experienced local extension builder in OX17. Please contact us for a free, no obligation quote and...
From £21,904
NJM GENERAL BUILDING CONTRACTO is an established and experienced local extension builder in OX17. Please contact us for a free, no obligation quote...
From £22,152
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...

A flat roof extension ranges from the cheapest of £21,784 (ADVANCED BUILDING CONCEPTS based in OX17) to the dearest of £22,152 (Haras Building Contractors Ltd based in OX16), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in OX17 by posting a job with HaMuch. We'll send it to extension builders in OX17.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Banbury | £33 | £239 |
| Build A Flat Roof Extension near Daventry | £31 | £230 |
| Build A Flat Roof Extension near Bicester | £35 | £249 |
| Build A Flat Roof Extension near Cherwell | £35 | £249 |
| Build A Flat Roof Extension near Leamington Spa | £27 | £212 |
| Build A Flat Roof Extension near Warwick | £28 | £213 |
| Build A Flat Roof Extension near Stratford-on-Avon | £27 | £215 |
| Build A Flat Roof Extension near Stratford-upon-Avon | £27 | £215 |
| Build A Flat Roof Extension near Northampton | £35 | £239 |
| Build A Flat Roof Extension near Rugby | £31 | £224 |
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 - £17,418

Two storey extension - £87,877

Build a timber frame extension - £25,918

Build a swimming pool - £80,918

Single storey extension - £53,360

Side return extension - £40,578

Install an RSJ - £2,118

Outbuilding - £9,918

Build a Mansard loft conversion - £51,918

Loft conversion - £32,981

Build a kitchen extension - £41,918

Hip to gable loft conversion - £41,918

Granny annexe - £86,918

Garden office - £9,918

Convert a Garage - £15,918

Garage - £18,418

Build a flat roof extension - £21,918

Build a dormer loft conversion - £41,918

Concrete foundations - £6,168

Convert a bungalow loft - £28,918

Convert a basement - £36,578