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.
Tree protection is boring: directional drilling and NDD in the tree protection zone
When a service has to cross a tree's root zone, boring under it beats trenching through it. AS 4970:2025 now says so. The method, and its limits.
Read the article → Project reviewUplighting Frankston's Nepean Highway median trees without trenching the root zones
Frankston City Council wanted in-ground uplighting for the significant trees down the Nepean Highway median. We got it in without trenching a root zone.
Read the article → Standards & regulationClause 52.37 didn't switch off the overlays: how the tree controls now stack
Clause 52.37 didn't simplify tree controls in Victoria. It added one. On a site with an overlay, you now have two permit regimes on the same tree.
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.
Get in touch