Friends Will and Holly share 'The Studio' an Eco-friendly house which is built into the hillside next to Saffie, the Cedar of Lebanon. We assume they live together although there is never any mention of bedrooms.
Nobody knows exactly how old Oakley, the wise old Oak tree is, although it is revealed in #The Time Travelling Tree (S2, Ep10) that he was planted in the garden as a sapling. His true age is later revealed in the feature-length Special #When You Wish Upon a Oak.
In the feature length special #When You Wish Upon an Oak, it is revealed that the Grand Old Oak is actually Oakley's father.
Raggles has a special zipper in his tummy where he keeps all of his special things. His favourite item is his penny whistle.