When do I need a permit to remove a tree in Knox?
A canopy tree under Clause 52.37 is a tree with all three characteristics: a height of more than 5 metres above ground level; a trunk circumference of more than 0.5 metres, measured at 1.4 metres above ground level; and a canopy diameter of at least 4 metres. A planning permit is required to remove, destroy or lop a canopy tree anywhere on a vacant lot, or — where there is an existing dwelling on the land — where the canopy tree is located within 6 metres of the narrowest street frontage or 4.5 metres from the rear boundary.