A tree survey is intended to determine exactly what trees and other woody vegetation are present on a particular site. Knowing which species of tree, and in what numbers, enables a strategy of management to be formulated.
An owner of a large number of trees e.g. a Local Authority should ideally have a good selection of trees, both native and non-native.
These should also cover the entire spectrum of ages ranging from freshly planted to over-mature or veteran trees.
Hazard Evaluation (Health & Safety Survey)
Where a tree is hazardous because of decay or structural weakness and shows signs of being in such a condition, the occupier of the land on which it stands is normally liable under UK laws for any personal injury or other damage it causes by breaking or falling. This liability arises from provisions by which the occupier has a common duty of care to others who enter the land or it's vicinity. Periodic inspection of all trees on a property should therefore be undertaken to assess risk from those trees. The frequency of inspection will depend on a number of factors including the location of the tree (numbers of people passing nearby) and its condition. Recommendations can then be made to control or eliminate that risk.