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

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From £21,920

Rates updated Oct 26
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Lp Townsend Brickwork

Lee Townsend

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

Lp Townsend Brickwork provides a local, trusted extensio...

From £22,264

Last active Nov 26
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S.K Singh

Need an Extension Builder in Iver? S.K Singh has been helping local clients (10 mile radius) with their extension buildering jobs for many years. G...

From £22,000

Last active Nov 26
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Vital Builders

Vital Builders are here to help customers who need an Extension Builder in Iver. We offer a competitive rate to complete all your extension builder...

From £22,432

Last active Nov 26
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GMB BUILDING SERVICES

GMB BUILDING SERVICES is an established and experienced local extension builder in Iver. Please contact us for a free, no obligation quote and comp...

From £21,888

Last active Nov 26
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Nirvair Builders

Nirvair Builders is an established extension buildering business in Iver. We come highly recommended and provide competitive quotes for your work.<...

From £22,280

Last active Nov 26
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DC Build & Pave

Trusted and professional extension builder in Iver. Experienced in all extension buildering work and keeping within budget and on quote. DC Build &...

From £22,096

Last active Nov 26
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Matharu Buildings

Bill Matharu

Matharu Buildings is an established extension buildering business in Iver. We come highly recommended and provide competitive quotes for your work....

From £22,312

Last active Nov 26
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T M Builder

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

From £22,304

Last active Nov 26
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Greenline Construction

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

From £22,336

Last active Nov 26
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SME Builders Network

Trusted and professional extension builder in Iver. Experienced in all extension buildering work and keeping within budget and on quote. SME Builde...

Flat roof extension cost in Iver

Estimates for build a flat roof extension near Iver

A flat roof extension ranges from the cheapest of £21,888 (Nirvair Builders based in UB3) to the dearest of £22,432 (GMB BUILDING SERVICES based in UB8), 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 Iver by posting a job with HaMuch. We'll send it to extension builders in Iver.

"Flat roof extension" - WEST DRAYTON, job posted 23/11/25


Estimates for common extension builder jobs in Iver;

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.

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