Build additional living space on your property in BT80

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 BT80?

Granny annexe cost in BT80 - Sort by rates or availability

From £87,016
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GMC Construction

(last active 30/09/26)

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

GMC Construction provides a local, trusted extension bui...

From £86,432
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C McGurk Building Contractor

(last active 05/09/26)

We have over 25 years experience in all building work and renowned for good workmanship   All jobs small and large taken on 

From £86,904
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FJS CONTRACTS LTD

(last active 05/09/26)

FJS CONTRACTS LTD are here to help customers who need an Extension Builder in BT80. We offer a competitive rate to complete all your extension buil...

From £87,016
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Seamus Mcmullan building and joinery

(last active 30/08/26)

Seamus Mcmullan building and joinery is an established extension buildering business in BT80. We come highly recommended and provide competitive qu...

From £86,296
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Oakmore Contracts

(last active 06/05/26)

Been in business as 18 years alway put clients first and never had any combacks 

From £86,784
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JP&S Construction Ltd

JP&S Construction Ltd is an established extension buildering business in BT80. We come highly recommended and provide competitive quotes for your w...

From £86,536
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Terry Design

Experienced extension builder ready to quote for your work. Terry Design is the best extension builder in BT80. No obligation free quotes and many ...

Granny Annexe Cost in BT80

Estimates for granny annexe near BT80

Building a granny annexe ranges from £86,296 (Oakmore Contracts based in BT45) to £87,016 (GMC Construction based in BT70), 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 BT80 by posting a job with HaMuch. We will send it to extension builders in BT80 who will be happy to help you.


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Estimates for common extension builder jobs in BT80;

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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