Extend your Dartford 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 Dartford? To see prices and availability for your job click green button.

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Build a flat roof extension cost in Dartford - Sort by rates or availability

From £22,328

Last active Nov 26
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Tony Rutter

Need an Extension Builder in Dartford? Tony Rutter has been helping local clients (10 mile radius) with their extension buildering jobs for many ye...

From £22,168

Last active Nov 26
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Sevcan Construction

Relax... you have found a reliable extension builder in Dartford. Sevcan Construction is a friendly and reliable company based in Dartford who cons...

From £22,272

Last active Nov 26
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Kunshi Services UK Ltd

Kunshi Services UK Ltd is a trusted extension builder serving customers in Dartford and the surrounding area. Contact us to today to get a competit...

From £22,352

Last active Oct 26
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R Tredget & Son

R Tredget & Son are here to help customers who need an Extension Builder in Dartford. We offer a competitive rate to complete all your extension bu...

From £22,616

Last active Oct 26
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HOUSE BUILDING SERVICES LIMITED

Tommy House

HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Dartford and the surrounding area. Contact us to today to get a...

From £22,368

Last active Oct 26
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MONOLITH CONSTRUCTION LTD

Need an Extension Builder in Dartford? MONOLITH CONSTRUCTION LTD has been helping local clients (10 mile radius) with their extension buildering jo...

From £22,344

Last active Oct 26
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Buildem Ltd

Buildem Ltd is a trusted extension builder serving customers in Dartford and the surrounding area. Contact us to today to get a competitive quote f...

From £22,064

Last active Oct 26
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Moss Roofing & Sons

Moss Roofing & Sons is an established and experienced local extension builder in Dartford. Please contact us for a free, no obligation quote and co...

From £22,064

Last active Oct 26
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Rogers & Ross Building Service

Chris Rogers

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

From £22,096

Last active Oct 26
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FLEX CONSTRUCTION LIMITED

Joe

FLEX CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in Dartford. We offer a competitive rate to complete all your ex...

Flat roof extension cost in Dartford

Estimates for build a flat roof extension near Dartford

A flat roof extension ranges from the cheapest of £22,064 (Moss Roofing & Sons based in RM13) to the dearest of £22,616 (HOUSE BUILDING SERVICES LIMITED based in DA16), 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 Dartford by posting a job with HaMuch. We'll send it to extension builders in Dartford.


Estimates for common extension builder jobs in Dartford;

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...