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

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From £22,512

Rates verified Oct 26
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Mandala Building Services

Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...

From £22,112

Last active Nov 26
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JJSR Construction Ltd

J Wijayamohan

JJSR Construction Ltd is an established and experienced local extension builder in Borehamwood. Please contact us for a free, no obligation quote a...

From £22,296

Last active Nov 26
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BELLVIEW BUILDERS LTD

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

BELLVIEW BUILDERS LTD provides a local, trusted extensio...

From £22,360

Last active Nov 26
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A&J BUILDERS & DECORATORS LTD

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

From £22,192

Last active Nov 26
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SJ Expert Building Services

SJ Expert Building Services are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all yo...

From £22,560

Last active Oct 26
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Rafix Building

Rafal Szczepanski

Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...

From £22,464

Last active Oct 26
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AV Home Improvements

In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

From £22,424

Last active Oct 26
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Sharp Building Ltd

Sharp Building Ltd is an established and experienced local extension builder in Borehamwood. Please contact us for a free, no obligation quote and ...

From £22,024

Last active Oct 26
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Mario Prajar Building Services

Mario Prajar Building Services is an established and experienced local extension builder in Borehamwood. Please contact us for a free, no obligatio...

From £22,096

Last active Oct 26
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RLC Construction

RLC Construction are here to help customers who need an Extension Builder in Borehamwood. We offer a competitive rate to complete all your extensio...

Flat roof extension cost in Borehamwood

Estimates for build a flat roof extension near Borehamwood

A flat roof extension ranges from the cheapest of £22,024 (Mario Prajar Building Services based in HA2) to the dearest of £22,560 (Rafix Building based in EN4), 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 Borehamwood by posting a job with HaMuch. We'll send it to extension builders in Borehamwood.


Estimates for common extension builder jobs in Borehamwood;

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...