Our Team

Managing Director - David Galwey


  • Bachelor of Applied Science (Horticulture) (University of Melbourne)
  • Associate Diploma of Applied Science (Arboriculture) (University of Melbourne)
  • Certificate of Arboriculture (Ryde College, Sydney) 
  • Tree Risk Assessment Qualification (TRAQ) (International Society of Arboriculture)

Skills & Experience

As founder and Managing Director of Tree Dimensions, David is a highly regarded and experienced arboricultural consultant.  As a valued consultant to several councils, David regularly assesses trees in relation to planning issues. David is also experienced in liaising and communicating with community groups on behalf of councils.  David is regularly engaged by councils and others as an expert witness.

David served as a board member of the International Society of Arboriculture – Australia Chapter (ISAAC). He was ISAAC’s representative on Standards Australia’s EV-018: Arboriculture committee, which develops standards for tree pruning and protecting trees on development sites. 

Current specialist roles

  • Acting Commissioner of the NSW Land and Environment Court. 
  • Casual lecturer, University of Melbourne (Burnley Campus) at Graduate Certificate and Bachelor level. Subjects include Trees and the Law, Tree Protection, Tree Assessment, Tree Valuation and Tree Pruning.  
  • Member of the National Trust (Victoria) Significant Trees Expert Committee. David has detailed knowledge of the National Trust (Victoria) guidelines for determining the significance of heritage trees. 


Our Team

Senior Arboricultural Consultant - Matt Sauvarin


  • Bachelor of Horticulture (Arboriculture) (University of Melbourne)
  • Associate Degree of Environmental Horticulture (Arboriculture) (University of Melbourne)
  • Certificate IV in Horticulture (Parks & Gardens) (University of Melbourne)
  • Tree Risk Assessment Qualification (TRAQ) (International Society of Arboriculture)

Skills & Experience

Matt is an outstanding communicator and brings a wide range of knowledge in horticulture and arboriculture to the experienced team at Tree Dimensions. His career in horticulture began as an apprentice gardener in South Gippsland. Later he worked in Melbourne’s inner-city gardens where he became Head Gardener of the Kings Domain and the Shrine of Remembrance parklands. 

Prior to commencing work with Tree Dimensions in 2012, Matt worked as a climbing arborist for four years. In this role, Matt gained skills in professional tree maintenance, tree removal and the treatment of tree-related pests and diseases. 

Matt has worked as a research assistant at the University of Melbourne. In Melbourne and China, he has taught: climbing techniques, tree pruning, and tree planting. Matt also tutors in tree identification at the university’s Burnley Campus. 

Matt has been carrying out planning assessments, tree removal requests and tree valuations for councils since the start of 2012. He can undertake climbing (aerial) inspections of trees where necessary; and completed the Australian i-Tree Master Class 2017.


our team

Arboricultural Consultant - Linda Worland


  • Graduate Certificate in Arboriculture (University of Melbourne)
  • Bachelor of Science with Honours (UNSW)
  • Bachelor of Science with Japanese (Griffith University)
  • Associate Degree of Urban Horticulture (University of Melbourne)

Skills & Experience

Linda’s career began as an ecologist before she specialised in science communication and technical editing in Australia and Japan. She returned to study in 2014 and completed degrees in horticulture and arboriculture.

Linda commenced work at Tree Dimensions in 2016. She undertakes a range of tree assessments for councils and private clients. She also brings a range of experience complementary to arboricultural consulting and professional report writing.


Our Team

Arboricultural Consultant - Theo Glatthor


  • Graduate Diploma of Applied Science (Arboriculture) (University of Melbourne)
  • Bachelor of Education (Victoria College)
  • Tree Risk Assessment Qualification (TRAQ) (International Society of Arboriculture)

Skills & Experience

Theo has an excellent understanding of arboricultural assessments. He has been with Tree Dimensions since 1999 and has completed an extensive range of assessment work for local government clients around Melbourne. 

Not only has Theo collected data on tens of thousands of trees throughout local municipalities, he has extensive experience in assessing tree root damage. 

Before entering the field of arboriculture, Theo was a school teacher, and has excellent communication skills with the general public.