How to choose an arborist: insurance, qualifications and getting quotes right

Tree work looks straightforward from the ground, which is part of why it is easy to underestimate how much can go wrong when the wrong person is hired for it. A falling limb, a tree dropped in the wrong direction, or damage to a fence, roof or powerline during removal are all genuine risks of tree work done badly, which is exactly why checking a few specific things before you hire an arborist is worth the extra few minutes it takes.

Insurance is the single most important thing to confirm, and public liability insurance specifically. This covers damage the arborist or their crew cause to your property, a neighbour's property, or a person, while carrying out the work — genuinely important given that tree removal, by its nature, involves large falling objects near houses, fences and people. Cover levels vary by the type and scale of work, but public liability policies in the arboriculture industry commonly range from around $5 million up to $20 million or more, with larger or council-related jobs sometimes requiring the higher end of that range. A legitimate, insured arborist will be able to provide a certificate of currency — the actual proof of current cover — without hesitation, and it is entirely reasonable to ask to see it before work begins rather than simply taking someone's word for it.

Qualifications are the second thing worth checking, and our separate article on arborist qualifications explains what Certificate III, Certificate IV and Diploma level actually mean in practice. For most residential pruning and removal work, a crew holding Certificate III in Arboriculture is the standard, appropriate qualification. If your job involves a council permit application for a protected tree, you may separately need a report from a consulting arborist at diploma level, which is worth clarifying with your council before assuming your removal arborist's qualifications alone will satisfy the permit process.

Getting multiple quotes is worth doing properly rather than just as a box-ticking exercise, and the key is making sure you are comparing the same scope of work. A cheaper quote that does not include stump grinding, green waste removal, or handling the council permit process is not actually cheaper than a more expensive quote that includes all three — it just moves those costs to a later invoice. When comparing quotes, it is worth asking each arborist to specify exactly what is and is not included, whether the price is fixed or an estimate that could change once work starts, and what their approach is to anything unexpected discovered once the job is underway, such as the tree being in worse condition than it appeared from the ground.

A few other practical questions round out a sensible hiring process. Ask how the crew plans to manage the specific hazards of your job — proximity to a house, fence, powerlines or a shared boundary with a neighbour — since a considered answer here is often a better sign of genuine experience than the price alone. Ask whether green waste and stump grinding are included or separately quoted, since this affects the real total cost. And if the tree is potentially protected, ask whether the arborist will handle or assist with the council permit process, or whether that is something you need to organise separately before booking work.

This article is general guidance on what to check before hiring an arborist in Australia, not a recommendation of any specific business. Our directory lists Australian arborists and tree services by area, including licensing and contact details where available, if you are ready to start comparing quotes for your job.

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