Build additional living space on your property in BR4

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 BR4? To see prices and availability for your job click Get quotes.

HaMuch is Excellent

Granny annexe cost in BR4 - Sort by rates or availability

From £86,992

(last active 16/10/26)
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Cre8tive Contractors Ltd

Cre8tive Contractors Ltd are here to help customers who need an Extension Builder in BR4. We offer a competitive rate to complete all your extensio...

From £87,088

(last active 18/09/26)
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L M G Building Services (London) Ltd

Relax... you have found a reliable extension builder in BR4. L M G Building Services (London) Ltd is a friendly and reliable company based in BR4 w...

From £87,296

(last active 17/09/26)
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Aviemore Building Contractors Ltd

Experienced extension builder ready to quote for your work. Aviemore Building Contractors Ltd is the best extension builder in BR4. No obligation f...

From £86,952

(last active 17/09/26)
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QC11 LTD

Vas OPetrov

QC11 LTD are here to help customers who need an Extension Builder in BR4. We offer a competitive rate to complete all your extension buildering job...

From £86,896

(last active 17/09/26)
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SMC Property Maintenance

Relax... you have found a reliable extension builder in BR4. SMC Property Maintenance is a friendly and reliable company based in BR4 who consider ...

From £86,568

(last active 17/09/26)
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Oaksure Construction

Stuart Bogazzi

Working as a builder for over 20 years now.

Family run business 

Can sort any problem out and help build your dreams.

From £87,328

(last active 17/09/26)
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QUANTIC BUILDING SERVICES LTD

Location

West Wickam, BR4

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

From £87,424

(last active 20/11/25)
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S G W

Experienced extension builder ready to quote for your work. S G W is the best extension builder in BR4. No obligation free quotes and many happy cu...

From £87,024

(last active 18/11/25)
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John Smith Builders

Location

West Wickam, BR4

John Smith Builders is a trusted extension builder serving customers in BR4 and the surrounding area. Contact us to today to get a competitive quot...

From £87,120

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Hursley Developments Ltd

Experienced extension builder ready to quote for your work. Hursley Developments Ltd is the best extension builder in BR4. No obligation free quote...

Granny Annexe Cost in BR4

Estimates for granny annexe near BR4

Building a granny annexe ranges from £86,568 (Oaksure Construction based in CR0) to £87,424 (S G W based in BR4), 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 BR4 by posting a job with HaMuch. We will send it to extension builders in BR4 who will be happy to help you.


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Estimates for common extension builder jobs in BR4;

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...