Build additional living space on your property in Barking

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

HaMuch is Excellent

Granny annexe cost in Barking - Sort by rates or availability

From £87,120

Rates verified Oct 26
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SDS Constructions

Sean Smithers

Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...

From £86,880

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Can design and Construction

Erald Kanani

Member since August 2025

Location

Barking, IG11

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

From £86,920

Last active Oct 26
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G HAMID CONSTRUCTION LTD

Relax... you have found a reliable extension builder in Barking. G HAMID CONSTRUCTION LTD is a friendly and reliable company based in Barking who c...

From £87,168

Last active Oct 26
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Sevcan Construction

Relax... you have found a reliable extension builder in Barking. Sevcan Construction is a friendly and reliable company based in Barking who consid...

From £87,368

Last active Oct 26
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MONOLITH CONSTRUCTION LTD

Need an Extension Builder in Barking? MONOLITH CONSTRUCTION LTD has been helping local clients (10 mile radius) with their extension buildering job...

From £87,344

Last active Oct 26
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Buildem Ltd

Buildem Ltd is a trusted extension builder serving customers in Barking and the surrounding area. Contact us to today to get a competitive quote fo...

From £87,400

Last active Oct 26
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Decorating Building Service

Decorating Building Service are here to help customers who need an Extension Builder in Barking. We offer a competitive rate to complete all your e...

From £87,032

Last active Oct 26
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M & S Builders

M & S Builders is a trusted extension builder serving customers in Barking and the surrounding area. Contact us to today to get a competitive quote...

From £87,200

Last active Sep 26
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Derryard Construction Ltd

Relax... you have found a reliable extension builder in Barking. Derryard Construction Ltd is a friendly and reliable company based in Barking who ...

From £86,968

Last active Sep 26
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B J CULLEN BUILDERS

B J CULLEN BUILDERS are here to help customers who need an Extension Builder in Barking. We offer a competitive rate to complete all your extension...

Granny Annexe Cost in Barking

Estimates for granny annexe near Barking

Building a granny annexe ranges from £86,880 (Can design and Construction based in Ig11) to £87,400 (Decorating Building Service based in IG3), 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 Barking by posting a job with HaMuch. We will send it to extension builders in Barking who will be happy to help you.


Estimates for common extension builder jobs in Barking;

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...