Crown Consultants Ltd.
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Safety Tree Survey for Safety Purposes

Safety Tree Survey for Safety Purposes

This type of tree survey identifies defects such as weak branch junctions or decay fungi which can affect the structural integrity of trees. Tree failure can be catastrophic, causing death or serious harm to persons or property.

Your Obligations

Anyone who owns or manages land containing trees has a legal duty to ensure that they are in a safe condition so that foreseeable damage does not occur due to tree failure. (Occupiers Liability Act 1954/1980).

Commercial premises have a further obligation under the Health and Safety at Work Act 1974 to undertake regular tree surveys so that trees do not cause foreseeable damage.

Guidance issued by the Government, the Forestry Commission and the Arboricultural Association advises that a tree survey is regularly undertaken by a professional tree surveyor. Failure to do so may leave those responsible liable to prosecution.

Exercising your Duties

Crown Arboricultural Consultants will undertake a tree survey to identify hazardous trees and our tree report will make prioritised recommendations to reduce owner liability. An inspection frequency will ensure that funds are not wasted inspecting healthy trees in future tree surveys.

Depth of Tree Survey

A range of types of tree survey are available depending upon the quantity of trees and the available budget:

Walk-Over Tree Survey: This is the most economical type of tree survey. All trees will be inspected, but only details of those trees which are potentially hazardous are recorded within the tree report. Clients with a large number of trees and a limited budget tend to favour this type of tree survey.

Full Tree Survey: This is the next level of tree survey whereby details of all trees are recorded within the tree report. This type of tree survey suits clients who wish to have a full inventory of trees within their care.

Quantified Tree Risk Assessment Tree Survey (QTRA): Crown Arboricultural Consultants are licensed users of the QTRA System and are able to undertake tree surveys which quantify risk. A figure representing the probability of significant harm occuring is included within the QTRA Tree Report. This type of tree survey is often favoured by those responsible for a very large tree stock.

Decay Detection Tree Survey: This type of tree survey assesses the extent of decay deep within the tree. This requires the use of specialist tree survey equipment such as a resistograph, or the ultrasound Picus Tomograph machine. Click on the link below to see a clip of our principal arboricultural consultant undertaking a detailed Decay Detection Tree Survey.

Our Principal Arboricultural Consultant using the Picus Tomograph to assess the extent of decay in a beech tree.

Climbed Tree Survey: Occasionally defects are apparent but their extent cannot be determined during a ground level tree survey. In which case the tree surveyor may recommend that a climbed tree survey is undertaken.