Written Tree Assessments For Councils, Neighbours And Insurers

What this service is, and what it is not

This page is not about cutting anything down. It covers the written work: someone qualified inspects a tree, records what is actually there, and puts a defensible opinion on paper with their name on it.

The distinction that matters is independence. A crew that quotes removals has an obvious interest in the answer being removal. A report is worth paying for precisely because the person writing it is describing the tree rather than selling the job, and because the recommendation comes with the evidence behind it. Anyone reading that report later — a council officer, a planner, a loss adjuster, a solicitor — is reading it for the reasoning, not the conclusion.

Council applications in Fremantle and East Fremantle

Both the City of Fremantle and the Town of East Fremantle regulate significant trees, and the City of Melville and City of Cockburn apply their own controls on street trees and on trees tied to planning approvals. If the tree you want to remove is registered, listed, on a verge or covered by a condition of approval, the council decides — not you, and not the contractor.

What the council wants is an assessment they can act on: species, dimensions, health, structural condition, the specific defects, whether anything less than removal would resolve the problem, and what replacement planting is proposed. A report that reaches removal without first ruling out reduction, deadwooding or a cable is the sort that gets refused. The permits and approvals guide sets out who to lodge with.

Development sites

Tree retention is where most Fremantle development arguments start. Subdivide a limestone-cottage block, put a driveway along the side and the mature tuart or Moreton Bay fig in the back corner is suddenly inside a construction zone.

Australia has a published standard for this, AS 4970, which deals with protecting trees on development sites and defines the tree protection zone around a trunk and the structural root zone inside it. The practical work is establishing those zones, assessing what the proposed footings, service trenches and levels would do inside them, and specifying protective measures — fencing, ground protection, root-sensitive excavation, or supervision while services go in.

Local ground makes this sharper than it is elsewhere. Shallow sand over Tamala limestone means roots run wide and shallow across the rock rather than deep, so a trench that looks harmlessly far from the trunk can sever a large share of the root plate. A tree that survives construction and then windthrows two winters later usually lost its roots to a digger, not to the storm.

Neighbour disputes

Overhanging limbs, roots in a sewer, leaf litter in a pool, a tree the person next door will not touch. These are common and they get heated.

Be clear about what a report does here. It records the condition of the tree, the defects present, the likely failure modes and what would reduce the hazard. That is evidence. It is not a determination, it does not compel anybody, and it does not give you legal advice. Western Australia has no equivalent of the neighbour tree dispute legislation operating in New South Wales and Queensland, so the dispute is argued on nuisance and negligence. What an independent report usually achieves is much simpler than a court: it takes the argument off opinion and puts it onto a document both parties can read, which is often enough to settle it. Where pruning back to the boundary is on the table, the crown reduction page explains why one-sided cutting is the worst of the available outcomes.

Insurance claims and storm damage

After a winter front comes through, the question an insurer asks is why the tree failed. Was it a healthy tree brought down by an exceptional wind, or a tree with basal decay, a lifted root plate or a history of limb loss that should have been dealt with? Those two answers lead to different claim outcomes.

An assessment written soon after the event, while the root plate, the failure surface and the fallen material are still there to photograph, is far more useful than one written after the clean-up. If the tree is still under load or blocking access, make it safe first through emergency and storm response — but ask for the failure zone to be photographed before it is cleared.

Health and risk assessment

The routine version: a ground-level inspection of the whole tree, an aerial inspection where the crown has to be seen up close, and decay investigation where the visual picture is ambiguous. What it produces is a condition rating, a list of defects, a risk rating that weighs how likely a failure is against what sits underneath it, and a recommendation with a timeframe.

The species that generate most of these locally are predictable enough: marri and jarrah with heavy deadwood, lemon-scented gums shedding limbs over driveways, peppermints with included bark in a major fork, Norfolk Island pines carrying end weight over a roofline, and figs quietly lifting a limestone wall. Reports are written across Fremantle, East Fremantle, Bicton, Attadale, Mosman Park, Beaconsfield and the rest of the areas covered. If the outcome is that the tree has to go, that work is set out on the removal page, and what drives its price on the cost guide.