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

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From £23,232

Rates verified Oct 26
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Optimus Build Solutions

Vasile Boghean

Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...

From £22,360

Last active Nov 26
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Ellis & James Builders Limited

Darren Spencer

Need an Extension Builder in Brentwood? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension builder...

From £21,824

Last active Oct 26
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V&L Construction LTD

Trusted and professional extension builder in Brentwood. Experienced in all extension buildering work and keeping within budget and on quote. V&L C...

From £21,816

Last active Oct 26
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Lovehome Construction

Location

Brentwood, CM13

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

From £22,224

Last active Oct 26
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A Star Construction

Relax... you have found a reliable extension builder in Brentwood. A Star Construction is a friendly and reliable company based in Brentwood who co...

From £22,320

Last active Oct 26
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CLYDESDALE CONSTRUCTION LTD

CLYDESDALE CONSTRUCTION LTD is an established extension buildering business in Brentwood. We come highly recommended and provide competitive quotes...

From £22,248

Last active Oct 26
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Housemartin Building Services

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

From £22,240

Last active Oct 26
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Q Boss D&B

Q Boss D&B is an established extension buildering business in Brentwood. We come highly recommended and provide competitive quotes for your work.

From £22,048

Last active Oct 26
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KERFIELD BUILDING SERVICES LTD

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

KERFIELD BUILDING SERVICES LTD provides a local, trusted...

From £22,384

Last active Oct 26
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Prendi Construction Ltd

Peter Prendi

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

Flat roof extension cost in Brentwood

Estimates for build a flat roof extension near Brentwood

A flat roof extension ranges from the cheapest of £21,816 (Lovehome Construction based in CM13) to the dearest of £23,232 (Optimus Build Solutions based in Rm1), 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 Brentwood by posting a job with HaMuch. We'll send it to extension builders in Brentwood.


Estimates for common extension builder jobs in Brentwood;

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...