Extend your Southend-on-sea 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 Southend-on-sea? To see prices and availability for your job click green button.

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From £22,112

Last active Nov 26
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WDC LTD T/A

Experienced extension builder ready to quote for your work. WDC LTD T/A is the best extension builder in Southend-on-sea. No obligation free quotes...

From £21,848

Last active Nov 26
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Livinston & Son Ltd

Livinston & Son Ltd are here to help customers who need an Extension Builder in Southend-on-sea. We offer a competitive rate to complete all your e...

From £21,976

Last active Nov 26
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Anglian Preservation

Anglian Preservation is an established and experienced local extension builder in Southend-on-sea. Please contact us for a free, no obligation quot...

From £22,216

Last active Nov 26
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Fox Conversions Limited

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

From £22,008

Last active Nov 26
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Thoroughbuild UK Services Ltd

Frederick Head

Over 35 years experience 

We are Gas Safe registered 

We are Verified

We pride ourselves on great custom...

From £22,128

Last active Oct 26
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GAB Design

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

From £21,720

Last active Sep 26
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JLS Building Services

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

JLS Building Services provides a local, trusted extensio...

From £21,952

Last active Aug 26
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CONCORD BUILDERS LIMITED

Need an Extension Builder in Southend-on-sea? CONCORD BUILDERS LIMITED has been helping local clients (20 mile radius) with their extension builder...

From £22,064

Last active Jun 26
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HIGHLAND CONSTRUCTION

Experienced extension builder ready to quote for your work. HIGHLAND CONSTRUCTION is the best extension builder in Southend-on-sea. No obligation f...

From £23,328

Last active Jun 26
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City build.com

Joe Copperthwaite

Trusted and professional extension builder in Southend-on-sea. Experienced in all extension buildering work and keeping within budget and on quote....

Flat roof extension cost in Southend-on-sea

Estimates for build a flat roof extension near Southend-on-sea

A flat roof extension ranges from the cheapest of £21,720 (JLS Building Services based in SS1) to the dearest of £23,328 (City build.com based in Ss5), 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 Southend-on-sea by posting a job with HaMuch. We'll send it to extension builders in Southend-on-sea.


Estimates for common extension builder jobs in Southend-on-sea;

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...