Extend your Brighton 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 Brighton? 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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RA Construction

Ricky Alexander

Trusted and professional extension builder in Brighton. Experienced in all extension buildering work and keeping within budget and on quote. RA Con...

From £21,984

Last active Oct 26
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FIRST FORMAT BUILDING

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

FIRST FORMAT BUILDING provides a local, trusted extensio...

From £22,176

Last active Oct 26
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East West Refurbishment Limited

Need an Extension Builder in Brighton? East West Refurbishment Limited has been helping local clients (20 mile radius) with their extension builder...

From £21,856

Last active Oct 26
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Citadel Construction

Location

Brighton, BN2

Citadel Construction is an established extension buildering business in Brighton. We come highly recommended and provide competitive quotes for you...

From £21,840

Last active Oct 26
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SIX STUDI? DESIGN

The studio is based on our founder's vision in concept and interior design, Fabio Lauro has long been in the business of creating atmospheres. His ...

From £22,296

Last active Oct 26
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Proper Copper Design

Proper Copper DesignWe are a design lead copper homeware company specializing in contemporary handles, taps, showers and accessories. Our products ...

From £21,992

Last active Oct 26
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Brighton Marina Hand Car Wash

Experienced extension builder ready to quote for your work. Brighton Marina Hand Car Wash is the best extension builder in Brighton. No obligation ...

From £22,016

Last active Sep 26
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Good Construction (Sussex) Limited

Location

Brighton, BN1

Trusted and professional extension builder in Brighton. Experienced in all extension buildering work and keeping within budget and on quote. Good C...

From £22,072

Last active Jul 26
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R & G Construction Brighton Ltd

Location

Brighton, BN1

Relax... you have found a reliable extension builder in Brighton. R & G Construction Brighton Ltd is a friendly and reliable company based in Brigh...

From £21,768

Last active Jul 26
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Graeme Davies Plumbing and Heating

Graeme Davies

Experienced extension builder ready to quote for your work. Graeme Davies Plumbing and Heating is the best extension builder in Brighton. No obliga...

Flat roof extension cost in Brighton

Estimates for build a flat roof extension near Brighton

A flat roof extension ranges from the cheapest of £21,768 (Graeme Davies Plumbing and Heating based in BN3) to the dearest of £22,800 (RA Construction based in BN2), 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 Brighton by posting a job with HaMuch. We'll send it to extension builders in Brighton.


Estimates for common extension builder jobs in Brighton;

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...