Arborist Reports Adelaide

An arborist report is a written assessment of a tree's health, structure and risk, used for council development applications, property purchases, insurance claims and neighbour disputes. Tree Fox prepares arborist reports across Greater Adelaide and the Adelaide Hills. A single-tree report typically costs $400–$800 and takes 5–10 business days. Book a free scope call or request a quote online.

An arborist report in Adelaide is the document council, your insurer, your developer, or your conveyancer asks for when something needs to happen with a tree and the decision can’t be left to a guess. A single-tree, council-grade report typically costs $400-$800, takes 5-10 business days to turn around, and is based on a site inspection of the tree — not a desktop guess.

Below: the report types we write, when you need one, what goes into a council-ready arborist report, how the process runs, what it costs, and answers to the questions Adelaide homeowners ask us most.

What an arborist report is — and what it’s used for

A formal arborist report is a written assessment by a qualified consulting arborist that documents a tree’s species, dimensions, condition, structural status, and any associated risks or recommendations. Different jobs need different report types:

• Development application reports — commonly requested by Adelaide councils when you’re applying to remove or significantly damage a regulated or significant tree. Lodged through PlanSA. The report sets out the case for the application against the planning rules that apply to the tree.
• Tree risk assessments / VTA — Visual Tree Assessment under the Quantified Tree Risk Assessment (QTRA) or VALID methodology, documenting the probability and consequence of tree failure. Used pre-storm-season, after a storm event, or to support an insurance position.
• Tree health assessments — diagnosis and management plan for a tree showing decline, disease (Phytophthora, Armillaria, decay fungi), pest attack, or stress.
• Pre-purchase / pre-development tree surveys — before buying a property or starting a build, an inventory of every tree on the block, its species, condition, regulated status, and any constraints it places on the development.
• Tree protection plans (TPPs) — often required as a condition of development consent when works are happening near a protected tree. Specifies the Tree Protection Zone (TPZ), Structural Root Zone (SRZ), and required protections during construction.
• Insurance reports — post-storm or post-incident documentation for an insurance claim, including cause of failure and replacement value.
• Expert witness reports — for legal disputes (boundary trees, root damage to neighbouring property, alleged unauthorised damage to a regulated tree).
• Pre-purchase tree inspections — a buyer’s-decision document covering what the trees on a block mean for maintenance, risk and future plans. See our pre-purchase tree inspection guide for what it covers.

If you’re not sure which report you need, send us the email or letter from council, your insurer, or your conveyancer — we’ll tell you which type fits.

Arborist report, tree report, certified arborist report — what’s the difference?

People search for the same document under a lot of names: arborist report, tree report, arborist tree report, certified arborist report, Level 5 arborist report, tree assessment. In practice, what matters is not the name on the cover but three things:

1. Who wrote it. For council applications and tree protection plans, the author should hold a Diploma of Arboriculture (AQF Level 5). “Certified arborist” usually refers to the ISA Certified Arborist credential — a useful international qualification, but on its own it isn’t the same as the AQF Level 5 qualification councils commonly look for.
2. What it was written for. A council application report is built around the regulated and significant tree criteria. An insurance report is built around cause of failure. A pre-purchase report is built around a buyer’s decision. One report rarely does all three jobs well.
3. Whether it was based on a site inspection. A desktop letter from photos is not an arborist report. Every report we write starts with an arborist on site, measuring and assessing the tree.

When council, an insurer or a lawyer asks for “an arborist report”, they almost always mean a written, site-based report by a consulting arborist. Ask any report writer — including us — for the author’s qualifications before you book.

When you need an arborist report in Adelaide

Common triggers:

• Council has knocked back your development application and asked for arboricultural justification.
• You want to remove a regulated or significant tree that doesn’t fit a standard exemption (within 3m of dwelling, 20m in a Bushfire Protection Area, listed exotic species, etc.). The application has to be supported by an arborist’s assessment.
• Insurance claim after a tree failure — a fence, roof, car, or shed damaged by a falling tree or limb. The insurer wants the cause documented.
• Building or extension near an existing tree — consents often specify a TPZ and may require a TPP from a consulting arborist.
• Pre-purchase due diligence on a property with significant trees — what can and can’t be done without breaching the planning code.
• A neighbour dispute about overhanging branches, root damage, or alleged unauthorised pruning of a regulated tree.
• A tree showing visible signs of decline — and you want to know whether it’s safe to keep, can be saved with management, or should come down.

Our process

1. Initial scope call. What you need the report for, who’s asked for it, deadline, and what tree(s) are involved. Most reports are quoted from this conversation.
2. Site inspection. An arborist attends the property, measures the tree(s), photographs visible structural features, runs a Visual Tree Assessment, and notes site context.
3. Diagnostic work as required — sounding the trunk for decay, resistograph testing if there’s reason to suspect internal decay, root crown excavation for collar issues, pathology sampling if disease is suspected.
4. Report drafting. Written to the format the request requires (PlanSA development application, council TPP template, insurer’s format, court-ready expert format).
5. Delivery. PDF report, usually within 5-10 business days. Urgent turnarounds available for an additional fee.
6. Next steps. If the report supports removal or pruning and council approves it, we can carry out the approved work too — tree removal or tree pruning — so the work matches the report and the consent conditions.

What goes into a council-ready arborist report

A report that council planners can assess quickly has a predictable structure. Ours cover:

• Site and tree identification — address, tree location plan, species (botanical and common name), and whether the tree is regulated or significant under the trunk-circumference thresholds measured at 1 metre above ground.
• Measurements — height, canopy spread, trunk circumference and diameter, and distance to dwellings, boundaries and services.
• Health assessment — canopy density, dieback, deadwood, signs of pests or disease.
• Structural assessment — included bark unions, cracks, cavities, root plate movement, lean, past lopping wounds and decay.
• Risk assessment — likelihood and consequence of failure using a recognised methodology, with the targets (house, driveway, footpath, play area) identified.
• Alternatives to removal — reduction pruning, cabling or bracing, root barriers, monitoring. Council expects these to be considered, and a report that skips them is easy to refuse.
• Photographs — annotated images of the features the conclusions rely on.
• Recommendation and justification — the arborist’s conclusion, tied back to the criteria the decision-maker applies.
• Author qualifications — name and AQF level of the consulting arborist who inspected the tree.

Arborist report cost in Adelaide

Indicative ranges by report type:

• Single-tree council application report (one tree, standard residential site): $400-$800
• Multi-tree report (three or four trees on one block): typically $900-$1,500
• Site-development report (multiple regulated trees, retention and protection specifications): typically $1,500-$3,500
• Legal / expert witness report: typically $1,200-$2,500, plus court attendance if required
• Pre-purchase tree inspection: typically $400-$650
• Urgent 48-hour turnaround: usually a $100-$300 premium

We quote a fixed price after the scope call, before anyone comes to site. For the full breakdown of what moves the price up or down, read our guide to arborist report costs in Adelaide.

What we won’t do: hand you a one-paragraph “this tree is dangerous” letter for $150 to get past council. The councils that enforce hardest — Burnside, Unley, NPSP, Mitcham — read these reports carefully, and a thin report wastes both your money and your application’s chances.

Why a qualified arborist matters

The May 2024 reforms to SA’s regulated and significant tree rules brought many more trees into the regime, and unapproved tree-damaging activity can attract heavy penalties. Reports lodged in development applications are read closely by council planners.

A report from a suitably qualified consulting arborist, citing the right tests and the right planning criteria, gives council what it needs. A report from someone with no formal arboricultural qualification often doesn’t.

The qualifications you’ll see quoted:

• AQF Level 3 (Cert III in Arboriculture) — climbing arborist, can do operational tree work.
• AQF Level 5 (Diploma of Arboriculture) — consulting arborist, can write reports and assess for development.
• ISA Certified Arborist — international qualification, separate to AQF.

For council-grade reports, AQF Level 5 is the level councils commonly look for. Ask for the author’s qualification before you book.

Arborist reports across Greater Adelaide

We provide reports for properties across the eastern (Burnside, Unley, Norwood, Walkerville, Prospect), western and coastal (Henley Beach, Glenelg, Port Adelaide), southern (Mitcham, Marion), northern (Salisbury, Modbury), and Hills suburbs (Stirling, Aldgate, Crafers, Mount Barker). Hills properties under the Native Vegetation Act 1991 often need a separate Native Vegetation Council assessment — we can advise on whether your job needs both regimes engaged.

Local considerations that shape an Adelaide arborist report

• Council-by-council practice. The state rules are the same everywhere, but councils with large numbers of mature trees — Burnside, Unley, Mitcham and Norwood Payneham & St Peters among them — receive a lot of applications and read reports closely. We have written guides to the Burnside, Unley, Mitcham and Norwood Payneham & St Peters processes.
• Reactive clay soils. Much of the Adelaide plains sits on reactive clay, so claims that a tree is damaging footings, paving or pipes come up often. A report needs to separate tree-related movement from other causes, and say so plainly where the evidence isn’t there.
• Bushfire risk in the Hills. In Bushfire Protection Areas the exemptions and the Native Vegetation Act both come into play, so a Hills report often needs to address both.
• Neighbour and boundary trees. Overhanging branches and roots crossing a boundary are a common reason for a report. Our guide to overhanging branches and neighbour trees in Adelaide explains where the lines sit.
• Storm season. After a tree or limb fails, insurers want the cause documented. See our guide to storm damage, trees and insurance in Adelaide.

For a deeper read on the regulated tree regime see our Adelaide tree removal permits guide.

Book an arborist report

Tell us what the report is for, who has asked for it, and your deadline. Send the council letter or insurer’s email if you have one. We’ll confirm the report type, give you a fixed price, and book the site inspection. Request an arborist report quote or call us on 0468 016 492. We’ll get back to you within 24–48 hours.