Build additional living space on your property in N2

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 N2? To see prices and availability for your job click Get quotes.

HaMuch is Excellent

Granny annexe cost in N2 - Sort by rates or availability

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 N2. We offer a competitive rate to complete all your extens...

From £86,320

(last active 28/08/26)
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Onyx Iv

Ivaylo Shkodrov

Extremely reliable service . Flexibility, correct, listening customer.  Wide experience.  

From £87,096

(last active 20/08/26)
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Taylor Construction Services Ltd

Relax... you have found a reliable extension builder in N2. Taylor Construction Services Ltd is a friendly and reliable company based in N2 who con...

From £86,928

(last active 11/08/26)
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Raf's Building Service

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

Raf's Building Service provides a local, trusted extensi...

From £87,144

(last active 07/08/26)
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Swiftdale Developments Ltd

Need the extension buildering job done quickly without breaking the bank? Swiftdale Developments Ltd offer fast, reliable, and affordable extension...

From £87,376

(last active 06/08/26)
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DS Construction

Trusted and professional extension builder in N2. Experienced in all extension buildering work and keeping within budget and on quote. DS Construct...

From £86,984

(last active 06/08/26)
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RF Building Services

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

From £87,080

(last active 07/05/26)
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Arundell Associates

Barney Arundell

Trusted and professional extension builder in N2. Experienced in all extension buildering work and keeping within budget and on quote. Arundell Ass...

From £87,160

(last active 02/03/26)
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Chelebi Builders

Chelebi Builders is a bespoke Build & Design construction company based in North London. Our expertise range from Loft Conversions, Extensions, Hou...

From £87,040

(last active 01/03/26)
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Gwe construction

Trusted and professional extension builder in N2. Experienced in all extension buildering work and keeping within budget and on quote. Gwe construc...

Granny Annexe Cost in N2

Estimates for granny annexe near N2

Building a granny annexe ranges from £86,320 (Onyx Iv based in N11) to £87,376 (DS Construction based in N3), 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 N2 by posting a job with HaMuch. We will send it to extension builders in N2 who will be happy to help you.


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Estimates for common extension builder jobs in N2;

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...