Build additional living space on your property in Mill Hill

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 Mill Hill? To see prices and availability for your job click green button.

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From £87,440

Last active Oct 26
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COMPLETE CIVIL ENGINEERING

Ciaran Feeney

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

COMPLETE CIVIL ENGINEERING provides a local, trusted ext...

From £87,144

Last active Oct 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 £87,048

Last active Oct 26
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WHITE EAGLE CONSTRUCTION LTD

Trusted and professional extension builder in Mill Hill. Experienced in all extension buildering work and keeping within budget and on quote. WHITE...

From £87,288

Last active Sep 26
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Crest Construction and Interiors Ltd

Ashley Payravi

At crest construction we work extremely hard to ensure that our clients receive a quality of service that continues to build our reputation. Client...

From £86,760

Last active Sep 26

1 review

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Simion PC Construction Ltd

Marcel Simion

Hi everyone!

i have good experience over 25 years working in construction and I have my on  Business and my company 

"I'm very happy for the job what his done" - LONDON,reviewed 29/09/17, SIMONA

From £87,096

Last active Aug 26
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Taylor Construction Services Ltd

Relax... you have found a reliable extension builder in Mill Hill. Taylor Construction Services Ltd is a friendly and reliable company based in Mil...

From £87,376

Last active Aug 26
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DS Construction

Trusted and professional extension builder in Mill Hill. Experienced in all extension buildering work and keeping within budget and on quote. DS Co...

From £87,432

Last active Aug 26
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Odp Builders

Need an Extension Builder in Mill Hill? Odp Builders has been helping local clients (5 mile radius) with their extension buildering jobs for many y...

From £86,984

Last active Aug 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 £86,712

Last active Jul 26
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J&K Expert Building Services

Jacek Pobiedzinski

Right people 

Granny Annexe Cost in Mill Hill

Estimates for granny annexe near Mill Hill

Building a granny annexe ranges from £86,712 (J&K Expert Building Services based in EN5) to £87,440 (COMPLETE CIVIL ENGINEERING based in HA8), 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 Mill Hill by posting a job with HaMuch. We will send it to extension builders in Mill Hill who will be happy to help you.


Estimates for common extension builder jobs in Mill Hill;

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...