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About Us

Kassod Arbor Tree Consultancy & Services Limited was formally established in September 2014. We provides professional and high-quality services for arboricultural consultancy, management, risk assessment and work.

ISA Certified Arborist Municipal Specialist®

“ISA Certified Arborist Municipal Specialist® credential holders are current ISA Certified Arborists® who have chosen municipal arboriculture or urban forestry as a career path. For this credential, you will be tested on the areas of public relations, administration, risk management, policy, and planning as they pertain to municipal arboriculture.

To be eligible for the exam, you must be an ISA Certified Arborist and have the a minimum of three additional years of work experience managing the establishment and maintenance of urban trees.” -ISA

For more information, please visit Why Become ISA Certified Arborist Municipal Specialist®?

ISA Certified Tree Worker Climber Specialist®

“This certification is for tree workers who specialize in climbing work. To become certified as an ISA Tree Worker Climber Specialist, you must have the skill and endurance to climb trees, demonstrate strong knowledge of safe work practices, and be able to get the job done off the ground. For this credential, you will be tested in both a classroom setting and a field setting.

To be eligible for the exam, you must have the following:
– Eighteen months of climbing experience in arboriculture
– Current training in a physical (practice) aerial rescue, CPR, and First Aid” -ISA

For more information, please visit Why Become ISA Certified Tree Worker Climber Specialist®?

ISA Tree Risk Assessment Qualified

“ISA offers the Tree Risk Assessment Qualification (TRAQ) as an instructor-led credential that demonstrates professional knowledge in tree risk assessment through participation in a training course and passing its accompanying exam. The TRAQ program offers tree care professionals the opportunity to expand their knowledge of the fundamentals of tree risk assessment by learning a standardized, systematic process for assessing tree risk and providing information to tree owners and risk managers for making informed decisions that will promote the safety of people and property and enhance tree benefits, health, and longevity. Through education and training, arborists will learn strategies to systematically identify and assess tree risk.

The qualified professional will:
– be proficient with the fundamentals of limited-visual and basic tree risk assessment, as defined in ISA’s Best Management Practices: Tree Risk Assessment;
understand the principles of advanced diagnostic techniques for assessing tree risk;
– gather and synthesize information needed to assess tree risk; and
make reasoned judgments and recommendations for mitigating identified risk.” -ISA

For more information, please visit Why Become ISA Tree Risk Assessment Qualified?

Meet The Team

Samuel Ma
Director, Consulting Arborist & Climbing Specialist

Samuel Ma is the Director and Consulting Arborist of Kassod Arbor, and a leading figure in the arboriculture industry across Asia. He holds multiple international certifications, including ISA Board Certified Master Arborist, ISA Certified Tree Climber, ISA Tree Risk Assessment Qualification (TRAQ), and other professional recognitions. With a strong academic background in environmental sciences and extensive field experience, Samuel specializes in advanced tree risk assessment, urban forestry consultancy, and sustainable tree management.

He is a two-time ISA international award recipient, having been honored with the 2018 ISA M.F. Blair Award for Exceptional Contribution to Practical Arboriculture and named a 2024 ISA True Professional of Arboriculture Award
Recipient. Samuel is widely respected for his commitment to professional excellence, innovation, and leadership in the arboriculture community.

Steven Keung
Consulting Arborist & Climbing Specialist

Steven Keung is an accomplished arborist specializing in applied biology and practical tree care solutions. He holds a Master of Philosophy (MPhil) degree in Applied Biology and multiple professional arboriculture certifications, including ISA Certified Arborist, ISA Certified Tree Climber, and ISA Tree Risk Assessment Qualification (TRAQ).

Steven combines strong scientific knowledge with real-world experience to deliver expert tree assessments, risk management, and sustainable care practices. His work reflects a commitment to high professional standards and a passion for advancing the health and safety of urban forests.

Team Members

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