Extend your KT9 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 KT9? To see prices and availability for your job click green button.

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From £22,800

Rates updated Oct 26
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OAK HOUSE BESPOKE BUILDERS

Location

Chessington, KT9

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

OAK HOUSE BESPOKE BUILDERS provides a local, trusted ext...

From £22,352

Last active Oct 26
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FLUID CONSTRUCTION

Need an Extension Builder in KT9? FLUID CONSTRUCTION has been helping local clients (10 mile radius) with their extension buildering jobs for many ...

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 £22,384

Last active Oct 26
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CJC BUILDERS

Trusted and professional extension builder in KT9. Experienced in all extension buildering work and keeping within budget and on quote. CJC BUILDER...

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 £22,352

Last active May 26
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Matstone Projects Limited

We are a London based Design & Build construction company offering the following :Property Extensions and Major RenovationsBespoke Kitchens - Desig...

From £22,040

Last active Mar 26
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RMC Design & Build Ltd.

Location

Greater London, KT9

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

RMC Design & Build Ltd. provides a local, trusted extens...

From £22,112

Last active Mar 26
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Henry Carson Homes

Bespoke house building and renovation company based in the South East.

From £22,408

Last active Mar 26
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mardon

Location

Surrey, KT9

mardon is an established and experienced local extension builder in KT9. Please contact us for a free, no obligation quote and competitive rates. C...

From £22,504

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V&Co.

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

V&Co. provides a local, trusted extension buildering ser...

Flat roof extension cost in KT9

Estimates for build a flat roof extension near KT9

A flat roof extension ranges from the cheapest of £22,000 (Ascent Builders based in KT19) to the dearest of £22,800 (OAK HOUSE BESPOKE BUILDERS based in KT9), 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 KT9 by posting a job with HaMuch. We'll send it to extension builders in KT9.


Estimates for common extension builder jobs in KT9;

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...