What Is Granny Annexe Tax in the UK? | Council Tax & Stamp Duty Relief Explained 2025-26 | MTA

Are you thinking about building or buying a granny annexe for an elderly relative or family member? You may be eligible for significant tax savings under HMRC and local council rules. In this comprehensive video, MTA (My Tax Accountant) explains what the Granny Annexe Tax is, how it works, and what tax reliefs you can claim when constructing or purchasing a secondary dwelling on your property in the UK.

A granny annexe — sometimes called an annexed dwelling — is a self-contained living space attached to or within the grounds of your main property. What most people don’t realise is that special Council Tax and Stamp Duty rules apply to these annexes, potentially saving you thousands of pounds if you qualify.

Credit to : My Tax Accountant