Build additional living space on your property in N6

A granny annexe is the ideal solution for offering a young family member their own space in your home while they save up for their own house, or to help an older relative have some independence while keeping them at a safe distance. But how much do they cost to build in N6? To see prices and availability for your job click Get quotes.

HaMuch is Excellent

Granny annexe cost in N6 - Sort by rates or availability

From £87,184

(last active 29/09/26)
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First guard Roofing

Darren Bergin

Relax... you have found a reliable extension builder in N6. First guard Roofing is a friendly and reliable company based in N6 who consider no job ...

From £86,976

(last active 29/08/26)
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SLS BUILDERS LIMITED

SLS BUILDERS LIMITED is a trusted extension builder serving customers in N6 and the surrounding area. Contact us to today to get a competitive quot...

From £86,984

(last active 29/08/26)
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Andreas Thomas Demetri

Andreas Thomas Demetri is a trusted extension builder serving customers in N6 and the surrounding area. Contact us to today to get a competitive qu...

From £87,192

(last active 28/08/26)
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SJ Expert Building Services

SJ Expert Building Services are here to help customers who need an Extension Builder in N6. We offer a competitive rate to complete all your extens...

From £87,080

(last active 07/05/26)
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Arundell Associates

Barney Arundell

Trusted and professional extension builder in N6. Experienced in all extension buildering work and keeping within budget and on quote. Arundell Ass...

From £87,344

(last active 21/10/25)
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BM Lofts Limited

Need an Extension Builder in N6? BM Lofts Limited has been helping local clients (5 mile radius) with their extension buildering jobs for many year...

From £87,144

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BUILD SPACE

BUILD SPACE is an established extension buildering business in N6. We come highly recommended and provide competitive quotes for your work.

From £87,136

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Brothers Group

Our building services company Brothers Group have been helping customers in North, East and West London and the surrounding area by providing profe...

From £87,336

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Mel Massey Studio

Mel Massey Studio, based in Finsbury Park, North London, offers interior design, interior styling and project management. With over 10 years of exp...

From £87,000

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Bok Services Ltd

Need an Extension Builder in N6? Bok Services Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many year...

Granny Annexe Cost in N6

Estimates for granny annexe near N6

Building a granny annexe ranges from £86,976 (SLS BUILDERS LIMITED based in NW5) to £87,344 (BM Lofts Limited based in N4), but these are just estimates that can help give you an idea of who will be better value in your area.

The best thing to do is to get quotes to build a granny annexe in N6 by posting a job with HaMuch. We will send it to extension builders in N6 who will be happy to help you.


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Estimates for common extension builder jobs in N6;

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...