Yes, permits are required for the removal of any viable tree on private property that has a trunk with a diameter greater than 30 cm as well as for any city owned trees. Permitting requirements for private properties are nullified, however, if the tree is dead, diseased, or poses a risk to life or property. Local Arborist is familiar with Toronto Tree Bylaws. We offer complimentary consultations for tree removal services and can confidently determine which permits, if any, are necessary for your specific case.