You can claim Single Person Discount (SPD) if there is only one adult living in the property as their main home. You can't claim if one of the adult residents is temporarily away for work, education or extended travel.
You can’t claim SPD if your adult child normally lives with you, but is living away from home to attend university.
However, you can claim a 25% student disregard instead. We will need to see a certificate from the university that confirms the course details and the course start and end dates. You can request this from the place of study.