An arborist report is a written assessment of a tree by a qualified arborist. Councils, builders, insurers and lawyers all ask for them, usually at the point where a decision hinges on the condition of a tree or on how nearby work will affect it. Here's when you actually need one and what it should contain.
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What an arborist report is
It's a formal document that records the species, size, health and structural condition of a tree, assesses any risk it poses, and sets out recommendations. Where building or earthworks are involved, it also maps the tree's root protection zone and spells out what can and can't happen within it.
A good report is written by a qualified, experienced arborist and holds up to scrutiny from a council planner or a court. It isn't the same thing as a quote for tree work.
Resource consent and protected trees
If a tree is scheduled or protected in your district plan, or sits in a zone where tree works are controlled, the council will usually want an arborist report before they'll consider an application to prune or remove it. The report explains why the work is justified and how the tree's health or risk supports that.
Waipa, Hamilton City and Waikato District all protect certain notable and scheduled trees, and the rules differ between them. If you aren't sure whether a tree is protected, check with your council before you plan any work.
Building, subdivision and earthworks near trees
When you're building, subdividing or digging near a tree you intend to keep, a report establishes how close you can work without killing it. It defines the tree protection zone and the fencing, ground protection and supervision needed during construction, in line with the Australian and New Zealand standard for protecting trees on development sites.
This is the kind of report a council attaches as a condition of consent, and it costs a lot less than discovering a protected tree has been fatally damaged halfway through a build.
Risk assessments, disputes and insurance
Reports also come up well outside the consent process. A business, school or body corporate might commission a tree risk assessment to show they've managed their duty of care. Neighbours in a boundary dispute often need an independent arborist's view. Insurers sometimes ask for a report before or after a tree causes damage.
In each case the value is the same: a qualified, independent opinion on the record, rather than two parties guessing.
How to get one
Touch Wood Tree Care provides arborist reports across Waikato. We'll visit the site, inspect the tree, and write up a report suited to what you need it for, whether that's a council application, a building project or a dispute.
If you've been told you need a report, call us on 022 167 1268 and tell us who's asking for it. That lets us pitch the detail at the right level first time, so you aren't paying for more than the job requires.
