Extend your Newhaven 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 Newhaven? 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 Newhaven. Experienced in all extension buildering work and keeping within budget and on quote. RA Con...

From £21,856

Last active Oct 26
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Citadel Construction

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

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 Newhaven. No obligation ...

From £23,120

Last active Jun 26
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CITY BUILDING SERVICES LIMITED

Experienced extension builder ready to quote for your work. CITY BUILDING SERVICES LIMITED is the best extension builder in Newhaven. No obligation...

From £22,104

Last active Mar 26
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JB Plastering

Joe Baxter

I've been plastering for 14 years now I take great pride in all my jobs I do,I'm very clean and good at my job also specializ in rendering and very...

From £22,184

Last active Jan 26

1 review

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Sussex Design and Construction

Aaron Hale

We are a family run buisness with over 20 years experience. We undertake all aspects of building, carpentry and maintenance work including:

"Great team" - BRIGHTON,reviewed 07/08/17, STEVE

From £22,096

Last active Dec 25
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RJW CONSTRUCTION SERVICES

Rob Webber

Trusted and professional extension builder in Newhaven. Experienced in all extension buildering work and keeping within budget and on quote. RJW CO...

From £21,808

Last active Dec 25
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R N CONSTRUCTIONS

Relax... you have found a reliable extension builder in Newhaven. R N CONSTRUCTIONS is a friendly and reliable company based in Newhaven who consid...

From £21,720

Last active Dec 25
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RWL BUILDING SERVICES

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

From £21,480

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Mr

Nick Burnett

Trusted and professional extension builder in Newhaven. Experienced in all extension buildering work and keeping within budget and on quote. Mr hav...

Flat roof extension cost in Newhaven

Estimates for build a flat roof extension near Newhaven

A flat roof extension ranges from the cheapest of £21,480 (Mr based in BN8) to the dearest of £23,120 (CITY BUILDING SERVICES LIMITED 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 Newhaven by posting a job with HaMuch. We'll send it to extension builders in Newhaven.


Estimates for common extension builder jobs in Newhaven;

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...