Extend your Derby with an extension

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in Derby? To see prices and availability for your job click green button.

HaMuch is Excellent

How HaMuch saves you money

Post your job for free

Post your job for free

We send your job to ALL Derby extension builders

Compare quotes

Compare quotes

Available extension builders in Derby reply

Save Money

Save Money

Select your affordable Derby extension builder

Post your job

From £22,264

Last active Jun 26
Get quotes

Seerey and Smith Building Solutions

John Smoth

Trusted and professional extension builder in Derby. Experienced in all extension buildering work and keeping within budget and on quote. Seerey an...

From £21,648

Last active Apr 26
Get quotes

Alan Askey Builder

Alsn Askey

Experienced extension builder ready to quote for your work. Alan Askey Builder is the best extension builder in Derby. No obligation free quotes an...

From £21,896

Get quotes

Derbyshire Bathrooms & Kitchens Ltd

Derbyshire Bathrooms & Kitchens Ltd is an established and experienced local extension builder in Derby. Please contact us for a free, no obligation...

From £22,112

Get quotes

J Pearson Building

Need to find an Extension Builder near you for all your extension buildering work?

J Pearson Building provides a local, trusted extension b...

From £21,904

Get quotes

Fearn Property

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £21,752

Get quotes

Fitted Solutions Ltd

Fitted Solutions was established in 2006 by founder Sam Fisher; with a promise to deliver exceptional craftmanship combined with first class custom...

From £21,744

Get quotes

The Blackbrook Group

The Blackbrook Group offers a one-stop shop for your construction project. We offer support from concept through to completion. We start with an in...

From £21,864

Get quotes

Refresh Renovations Derbyshire

Nestled in the rolling hillside of the West Midlands, Derby is a city birthed by the Roman Empire, and grown in the industrial revolution. Initiall...

From £21,776

Get quotes

Lifestyle Windows and Conservatories

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £21,648

Get quotes

REYNOLDS BUILDING SERVICES LTD

Experienced extension builder ready to quote for your work. REYNOLDS BUILDING SERVICES LTD is the best extension builder in Derby. No obligation fr...

Flat roof extension cost in Derby

Estimates for build a flat roof extension near Derby

A flat roof extension ranges from the cheapest of £21,648 (Alan Askey Builder based in DE5) to the dearest of £22,264 (Seerey and Smith Building Solutions based in DE7), 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 Derby by posting a job with HaMuch. We'll send it to extension builders in Derby.


Estimates for common extension builder jobs in Derby;

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.

More extensions & conversions cost guides...