Julian Dunster
Julian is an ISA Certified Arborist, ISA Tree Risk Assessment Qualified (TRAQ), a Registered Consulting Arborist in the American Society of Consulting Arborists (ASCA), a Registered Professional Forester, and a Registered Professional Planner. He has numerous awards for his work to the profession and is an Honourary Life Member of the International Society of Arboriculture, and PNW Chapter. As an interdisciplinary expert, Julian works with many other professionals to give excellent advice that is practical, functional, and will work well on the ground. He has implemented many innovative solutions for tree retention on development sites, and pioneered the development of tree risk assessment in the Pacific Northwest. Julian has considerable expertise in tree risk assessment, planning, conservation and environmental impact assessment issues around the world. He is regularly called on to give expert evidence in court on risk issues, personal injury, trespass, and appraisal. He has testified at inquests and court cases in Canada and Hong Kong. He has lectured in Great Britain, Scandinavia, Chile, Nepal, Australia, New Zealand, Singapore, the United States and China. Julian is a distributor for Rinntech Resistograph® and Sonic Tomography equipment

ISA Certified Arborist #PN-0189A

Contact Information

4621 Cliffwood Place
Victoria, British Columbia V8Y 1B6

Areas Served

Alaska, British Columbia, BC Mainland, Vancouver BC, Vancouver Island, Boise Metro, Northern Idaho, Southwestern Idaho, Southeastern Idaho, Central/Eastern Oregon, Central Oregon, Eastern Oregon, Portland Metro, Southern Oregon, Western Oregon, Central Washington, Eastern Washington, Seattle Metro, Western Washington

British Columbia Counties Served:

  • Alberni - Clayoquot
  • Bulkley - Nechako
  • Capital
  • Cariboo
  • Central Coast
  • Central Kootenay
  • Central Okanagan
  • Columbia - Shuswap
  • Comox Valley
  • Cowichan Valley
  • East Kootenay
  • Fraser Valley
  • Fraser - Fort George
  • Greater/Metro Vancouver
  • Kitimat - Stikine
  • Kootenay Boundary
  • Mount Waddington
  • Nanaimo
  • North Okanagan
  • Northern Rockies
  • Okanagan - Similkameen
  • Peace River
  • Powell River
  • Skeena - Queen Charlotte
  • Squamish - Lillooet
  • Stikine Region
  • Strathcona
  • Sunshine Coast
  • Thompson - Nicola


  • Air Spade Work
  • Appraisals
  • Construction Management
  • Expert Witness
  • Hazard/Risk Assessment
  • Landscape Planning/Management
  • Permit Assistance
  • Preservation
  • Protection
  • Report Writing
  • Resistograph Testing
  • Slope Issues
  • Urban Forest Management
  • View Enhancement/Clearing

Additional Specializations

Risk assessment. Damage appraisal. Personal injury cases. Effective tree retention planning, research, and writing. Lectures, workshops and seminars delivered all over the world to conferences, trade shows, academic and private institutions.

Articles by Julian Dunster

New Technical Report: Polypores of British Columbia

Ginns, J. 2017. Polypores of British Columbia. Province of BC, Victoria, BC. Tech. Rep. 104.  For arborists and urban foresters wanting to know more about tree diseases, this new publication is a useful addition for identification. It provides a comprehensive review of diseases, latest nomenclature, and how to identify them. It will be a useful … read more of New Technical Report: Polypores of British Columbia.

A Handbook of the World’s Conifers: Revised and Updated Edition

Farjon, A. 2017. A Handbook of the World’s Conifers (2 volumes). Revised and Updated Edition. Leiden, Netherlands: Koninklijke Brill NV. ISBN: 9789004324428 It is not often that a book about coniferous trees covers the entire collection worldwide. Most books are highly selective and omit the rarer, less known, or esoteric species. In the two volumes now … read more of A Handbook of the World’s Conifers: Revised and Updated Edition.

Essential Pruning Techniques: Trees – Shrubs – Conifers

Brown, G.E., and T. Kirkham. 2017. Essential Pruning Techniques. Trees. Shrubs. Conifers. Portland: Timber Press. pp.404. This is an update and revision of the classic work by George Brown first published in 1972. The new book has been expanded, updated, and beautifully illustrated by Tony Kirkham, Head of the Arboretum and Gardens at Kew, in … read more of Essential Pruning Techniques: Trees – Shrubs – Conifers.

Tree Risk Assessment – Use or Abuse of the TRAQ Form

The Tree Risk Assessment Qualification (TRAQ) was designed to provide a systematic process for assessing tree risk. Part of the process was to devise a simple field data collection form. The form now used in teaching the course went through many iterations before it was released. When teaching the course it is always noted that … read more of Tree Risk Assessment – Use or Abuse of the TRAQ Form.

Review of Urban Tree Management for Sustainable Development of Green Cities

Every so often new books come out that provide a fresh perspective on well established themes. This latest offering by Wiley is one such example. All of the fifteen contributors are based in Germany, and the source material offered is very much European – a good thing as it introduces perspectives, examples, and case studies … read more of Review of Urban Tree Management for Sustainable Development of Green Cities.

Book: The CODIT Principle. Implications for Best Practices.

It is a while since there has been a new book about CODIT. The CODIT Principle. Implications for Best Practices provides a welcome update and draws together old and new. It was originally published in Germany in 2008, and this translation brings a lot of useful material to a wider audience. The seven chapters cover … read more of Book: The CODIT Principle. Implications for Best Practices..