Resources
Our methods, tools and insights
The methods behind our assessments, our tree valuation tool, and the latest field notes from our work.
Our methods
The methods and specifications behind our work
We work to documented methods and specifications: tree valuation, tree rating, tree risk, habitat value, and our tree protection specification. Each one has a short summary you can read.
Each summary is open to read. To talk through how a method applies to your project, get in touch.
Tools
Calculators
Two working tools from our assessment methods, free to use. Tell us who you are and they open straight away.
Tree zone calculator
TPZ, SRZ, NRZ and encroachment under AS 4970:2025. Work out the zones from a tree's diameters, then trace a site plan to measure real encroachment.
Tree valuation calculator
Amenity value across the recognised methods, Burnley, City of Melbourne, Thyer, STEM and the current AANZAA-Value method, with the working shown.
Insights
Field notes on trees, planning and the standards
Short, practical pieces on how the standards apply on real sites. See all insights.
Amendment VC315: what changed in Clause 52.37 and the canopy standards, and the 4 metre test that splits the two
VC315 rewrote Clause 52.37 on 24 September 2026: a new canopy tree definition, canopy as a percentage of site area, deep soil scaled to the mature canopy, and a 4 m trunk test in the standards.
Read the article → Project reviewEncroachment is not impact: when existing conditions change the assessment of works near trees
The native vegetation guidelines deem a tree lost above 10 per cent NRZ encroachment unless an arborist report says otherwise. How existing road conditions change that assessment, and what an advisory committee accepted in 2026.
Read the article → Standards & regulationClause 52.37 Canopy Trees: what the clause requires after VC315, and where applications come unstuck
Clause 52.37 requires a permit to remove a canopy tree in most residential zones and sets a canopy cover percentage for the site. What counts, what Council can weigh, and the boundary tree trap.
Read the article →Need a method, a tool or a valuation?
Tell us what your project needs and we will point you to the right method or talk it through.
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