Extend your GU3 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 GU3? To see prices and availability for your job click green button.

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From £21,952

Last active Sep 26
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ADO Builders

ADO Builders is a trusted extension builder serving customers in GU3 and the surrounding area. Contact us to today to get a competitive quote for e...

From £23,200

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BZ GARDENS

Barnabas Zengo

Member since November 2022

BZ GARDENS specialise in creating and maintaining gardens and outdoor spaces across London, Greater London, Berkshire, Buckinghamshire, Hampshire, ...

From £22,104

Last active Jun 26
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ALDER CONSTRUCTION

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

ALDER CONSTRUCTION provides a local, trusted extension b...

From £23,136

Last active Mar 26
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Paramount Brickwork Limited

Patrick Elson

Paramount Brickwork Limited is an established extension buildering business in GU3. We come highly recommended and provide competitive quotes for y...

From £21,712

Last active Mar 26
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K P WARNE BUILDERS

Kevin Warne

K P WARNE BUILDERS is an established extension buildering business in GU3. We come highly recommended and provide competitive quotes for your work....

From £22,536

Last active Nov 25
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Structural Engineer/ Rebus Engineering Services Lt

We provide structural engineering design and construction service (D&B) Our dedicated, enthusiastic and highly qualified staff to find the appropri...

From £22,392

Last active Nov 25
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Cannon Build Solutions

Cannon Build Solutions is a local family-run building firm whose strong reliable reputation has been well established in North-West London and Buck...

From £22,264

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Awb

Awb are here to help customers who need an Extension Builder in GU3. We offer a competitive rate to complete all your extension buildering jobs to ...

From £22,320

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M &M GENERAL BUILDING

M &M GENERAL BUILDING is an established extension buildering business in GU3. We come highly recommended and provide competitive quotes for your wo...

From £24,608

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Websites 4 Trades

Carl Hancock

With well over a decade of marketing and web design experience working for a variety of tradespeople from cleaners through to builders, Websites 4 ...

Flat roof extension cost in GU3

Estimates for build a flat roof extension near GU3

A flat roof extension ranges from the cheapest of £21,712 (K P WARNE BUILDERS based in GU7) to the dearest of £24,608 (Websites 4 Trades based in GU7), 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 GU3 by posting a job with HaMuch. We'll send it to extension builders in GU3.


Estimates for common extension builder jobs in GU3;

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...