Build additional living space on your property in Oxford

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

HaMuch is Excellent

Granny annexe cost in Oxford - Sort by rates or availability

From £86,984

(last active 27/09/26)
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Lambert Home Builds

Location

Oxford, OX2

Lambert Home Builds is a trusted extension builder serving customers in Oxford and the surrounding area. Contact us to today to get a competitive q...

From £87,192

(last active 27/09/26)
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HH Projects and Services

DOM ZVIGA

Location

Oxford, OX3

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

From £87,216

(last active 04/09/26)
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DRC Construction

Experienced extension builder ready to quote for your work. DRC Construction is the best extension builder in Oxford. No obligation free quotes and...

From £87,216

(last active 04/09/26)
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BA Knott Oxford Ltd

Barry Knott

Location

Oxford, OX4

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

BA Knott Oxford Ltd provides a local, trusted extension ...

From £87,240

(last active 24/07/26)
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APH Construction Limited

Approved extension builder in Oxford, covering 20 miles.

Whatever extension buildering work you need, including emergency repairs, hire a co...

From £87,512

(last active 01/07/26)
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Michael E Phillips

Mick Phillips

Location

Oxford, OX2

Michael E Phillips is an established extension buildering business in Oxford. We come highly recommended and provide competitive quotes for your wo...

From £87,168

(last active 05/06/26)
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Singh Builders

Singh Builders is an established extension buildering business in Oxford. We come highly recommended and provide competitive quotes for your work.<...

From £87,224

(last active 05/06/26)
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K C CONSTRUCTION

Need an Extension Builder in Oxford? K C CONSTRUCTION has been helping local clients (20 mile radius) with their extension buildering jobs for many...

From £85,016

(last active 01/05/26)
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Beaumont Design & Build Ltd

Zain Hassan

Location

Oxford, OX4

Trusted and professional extension builder in Oxford. Experienced in all extension buildering work and keeping within budget and on quote. Beaumont...

From £87,224

(last active 01/05/26)
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TNT CONSTRUCTION

TNT CONSTRUCTION are here to help customers who need an Extension Builder in Oxford. We offer a competitive rate to complete all your extension bui...

Granny Annexe Cost in Oxford

Estimates for granny annexe near Oxford

Building a granny annexe ranges from £85,016 (Beaumont Design & Build Ltd based in OX4) to £87,512 (Michael E Phillips based in OX2), 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 Oxford by posting a job with HaMuch. We will send it to extension builders in Oxford who will be happy to help you.


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Estimates for common extension builder jobs in Oxford;

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.

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