Trusted and professional extension builder in DN15. Experienced in all extension buildering work and keeping within budget and on quote. Jaymi Wrig...
From £21,800
viking build is an established extension buildering business in DN15. We come highly recommended and provide competitive quotes for your work.
...From £21,480
Experienced extension builder ready to quote for your work. Northfield General Builders Ltd is the best extension builder in DN15. No obligation fr...

A flat roof extension ranges from the cheapest of £21,480 (Northfield General Builders Ltd based in DN17) to the dearest of £21,944 (Jaymi Wright based in DN16), 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 DN15 by posting a job with HaMuch. We'll send it to extension builders in DN15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Scunthorpe | £26 | £207 |
| Build A Flat Roof Extension near North Lincolnshire | £28 | £216 |
| Build A Flat Roof Extension near Willerby | £29 | £221 |
| Build A Flat Roof Extension near Goole | £26 | £217 |
| Build A Flat Roof Extension near Gainsborough | £30 | £234 |
| Build A Flat Roof Extension near Hull | £29 | £223 |
| Build A Flat Roof Extension near East Riding | £29 | £223 |
| Build A Flat Roof Extension near Beverley | £29 | £223 |
| Build A Flat Roof Extension near Selby | £30 | £240 |
| Build A Flat Roof Extension near Doncaster | £29 | £238 |
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 - £17,241

Two storey extension - £87,612

Build a timber frame extension - £25,741

Build a swimming pool - £80,741

Single storey extension - £49,827

Side return extension - £38,590

Install an RSJ - £1,941

Outbuilding - £9,741

Build a Mansard loft conversion - £51,741

Loft conversion - £31,325

Build a kitchen extension - £41,741

Hip to gable loft conversion - £41,741

Granny annexe - £86,741

Garden office - £9,741

Convert a Garage - £15,741

Garage - £18,241

Build a flat roof extension - £21,741

Build a dormer loft conversion - £41,741

Concrete foundations - £5,991

Convert a bungalow loft - £28,741

Convert a basement - £34,590