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

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From £22,176

Rates verified Oct 26
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Self employed

Hamza Elezi

Hight quality of jobs

From £21,936

Last active Oct 26
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D A P CONSTRUCTION

David Phelan

Please visit our web site.  Www. Dapconstruction. Co . Uk to c all our work and client recommendations.

From £22,000

Last active Oct 26
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Ascent Builders

Mick Winn

All of our work is guaranteed and covered by public liability and third party insurance for £5 million, giving our customers absolute peace of min...

From £22,128

Last active Oct 26
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Refine Property Maintenance Ltd

Our building services company Refine Property Maintenance Ltd was established in 2020. Since then we have been helping customers in and around Epso...

From £22,264

Last active Oct 26
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RM Sanwell Roofing

RM Sanwell Roofing is a trusted extension builder serving customers in New Malden and the surrounding area. Contact us to today to get a competitiv...

From £22,504

Last active Oct 26
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CSJ Building Services

Trusted and professional extension builder in New Malden. Experienced in all extension buildering work and keeping within budget and on quote. CSJ ...

From £22,456

Last active Oct 26
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Albdeco Builders & Decorators Ltd

Albdeco Builders & Decorators Ltd is a trusted extension builder serving customers in New Malden and the surrounding area. Contact us to today to g...

From £22,240

Last active Aug 26
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Flanagan Construction Ltd

Tom Flanagan

Very experienced Builder in this area ,Epsom Sutton  Raynes pk Wimbledon areas mostly now on recommendation usually also supply Drawings&a Structu...

From £22,168

Last active Jul 26
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Leith All Building & Decorating

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

Leith All Building & Decorating provides a local, truste...

From £22,152

Last active Jul 26
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Artin Construction

Artin Construction is an established extension buildering business in New Malden. We come highly recommended and provide competitive quotes for you...

Flat roof extension cost in New Malden

Estimates for build a flat roof extension near New Malden

A flat roof extension ranges from the cheapest of £21,936 (D A P CONSTRUCTION based in KT4) to the dearest of £22,504 (CSJ Building Services based in SM1), 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 New Malden by posting a job with HaMuch. We'll send it to extension builders in New Malden.


Estimates for common extension builder jobs in New Malden;

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...