From £22,400
Helenski Group Ltd specialises in complete bathroom renovations, luxury tiling, kitchens and full property refurbishments. We have over 20 years of...
From £22,088
Eric Handyman- builder is an established and experienced local extension builder in Denver. Please contact us for a free, no obligation quote and c...
From £21,568
We are a family business providing a one stop shop to meet all your building and renervation needs
From £21,528
Relax... you have found a reliable extension builder in Denver. B & K BUILDING SERVICES is a friendly and reliable company based in Denver who cons...
From £22,016
Need to find an Extension Builder near you for all your extension buildering work?
A Sindall Building provides a local, trusted extension b...
From £21,960
Trusted and professional extension builder in Denver. Experienced in all extension buildering work and keeping within budget and on quote. ANDREW R...
From £21,720
Trusted and professional extension builder in Denver. Experienced in all extension buildering work and keeping within budget and on quote. WEST NOR...
From £21,712
Grey's Construction & Civil Engineering is an established extension buildering business in Denver. We come highly recommended and provide competiti...
From £21,680
NB CONSTRUCTION (UK) LIMITED is an established and experienced local extension builder in Denver. Please contact us for a free, no obligation quote...
From £22,240
Relax... you have found a reliable extension builder in Denver. Fantastic Finishing is a friendly and reliable company based in Denver who consider...

A flat roof extension ranges from the cheapest of £21,528 (B & K BUILDING SERVICES based in PE30) to the dearest of £22,400 (Helenski Group Ltd based in IP24), 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 Denver by posting a job with HaMuch. We'll send it to extension builders in Denver.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Wisbech | £34 | £255 |
| Build A Flat Roof Extension near King's Lynn | £33 | £254 |
| Build A Flat Roof Extension near Kings Lynn & West Norfolk | £31 | £238 |
| Build A Flat Roof Extension near Ely | £40 | £279 |
| Build A Flat Roof Extension near Breckland | £28 | £248 |
| Build A Flat Roof Extension near Thetford | £42 | £277 |
| Build A Flat Roof Extension near Dereham | £25 | £203 |
| Build A Flat Roof Extension near Spalding | £32 | £238 |
| Build A Flat Roof Extension near Peterborough | £40 | £281 |
| Build A Flat Roof Extension near Bury St Edmunds | £34 | £251 |
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 - £17,391

Two storey extension - £87,837

Build a timber frame extension - £25,891

Build a swimming pool - £80,891

Single storey extension - £52,824

Side return extension - £40,276

Install an RSJ - £2,091

Outbuilding - £9,891

Build a Mansard loft conversion - £51,891

Loft conversion - £32,730

Build a kitchen extension - £41,891

Hip to gable loft conversion - £41,891

Granny annexe - £86,891

Garden office - £9,891

Convert a Garage - £15,891

Garage - £18,391

Build a flat roof extension - £21,891

Build a dormer loft conversion - £41,891

Concrete foundations - £6,141

Convert a bungalow loft - £28,891

Convert a basement - £36,276