CUGE-ARB-3011 Tree Inspection - The Basics

Trees growing in urban areas have to withstand multiple stresses. Tropical storms, air pollution, wind tunnels, poor tree pruning, reduced root structure and compacted soils are some of the stresses which weaken urban trees. Urban stress factors inadvertently accelerate the ageing effects of trees such as branch, stem and root decay. Branches or trees may also fall, causing danger to humans and/or damaging properties. Therefore, visual assessment on urban trees has to be carried out regularly to identify hazardous trees and minimise risks.

Please note that this course was formerly published as "Tree Inspection - Level 1"


This two-day course aims to provide learners with background knowledge in tree biology and equip them with basic skills for proper tree inspection. An essential feature of this course is the on-site practical training where participants will attempt their very own tree inspection under the guidance of the instructor. Proper tree inspection is crucial in mitigating tree failure and will aid tree care professionals in their work. Below is the list of content covered in the course:

  • Benefits of trees
  • Tree anatomy and biology
  • Reasons for tree inspection
  • Biomechanics
  • VTA (Visual Tree Assessment)
    • Tree Condition
    • Crown Condition
    • Trunk Condition
    • Root Condition
    • Assessing Site Condition
  • Common failure modes
  • Suggested mitigations
  • Record keeping and documentation
  • Tools and equipment


  • Lecture
  • Field session


  • Arborists
  • Surveyors
  • Landscape Architects
  • Personnel who have to carry out tree inspection


Professional Development Units CEU/CPD
ISA Certified Arborist 10
ISA TW Climber Specialist 10
ISA BCMA - Management 10
ISA Municipal Specialist 10
Certified Practising Horticulturist 14

Awarded points may differ for different sessions. Please refer to the latest mailer or contact our staff for more information.


Mr Clayton Lee is an ISA Certified Arborist with more than 15 years of experience in tree assessment and more than five years of experience in urban forest management. 



Please register and pay online here

All information are correct as of posted date.