A total of 6 trees were assessed at 3 Morwong Drive, Noosa Heads QLD 4567 on 15 March 2025. The property is an established urban residential allotment with a mixed canopy of native and exotic species. Trees were assessed using the Visual Tree Assessment (VTA) methodology and the Quantified Tree Risk Assessment (QTRA) system.

Tree Risk QTRA has been engaged by the property owner to undertake a Tree Risk (QTRA) and Works Priority Assessment of six trees located at the subject property in Noosa Heads, Southeast Queensland. The property is a mature urban residential allotment with an established tree population comprising predominantly native species with some exotic specimens.

The assessment was carried out on 15 March 2025 by a QTRA-certified practitioner. All trees were assessed individually using the Visual Tree Assessment (VTA) methodology, with risk quantified using the Quantified Tree Risk Assessment (QTRA) system in accordance with QTRA Ltd (2015).

Subject trees were inspected using the Visual Tree Assessment (VTA) methodology developed by Mattheck and Breloer (1998). Each tree was assessed for species, age class, health, structure, defects, proximity to targets, and arboricultural value. A Quantified Tree Risk Assessment (QTRA) was completed for each tree, producing a Risk of Harm (RoH) value expressed as a probability comparable to accepted tolerability thresholds.

The site is an established residential property in Noosa Heads with a well-developed canopy of predominantly native species. The tree population includes mature Eucalyptus tereticornis (Forest Red Gum) specimens of significant arboricultural value, a notable Angophora costata in excellent condition, and a Casuarina cunninghamiana in declining health. One exotic specimen (Liquidambar styraciflua) was assessed as presenting an Unacceptable risk due to significant basal decay.

The majority of trees assessed are in good to fair health and present a Broadly Acceptable level of risk. Works recommendations are prioritised accordingly, with one tree requiring urgent attention.

Based upon the assessment of the condition and risk associated with the six trees assessed, the following recommendations are provided. One tree (Tree #6, Liquidambar styraciflua) has been assessed as presenting an Unacceptable risk and removal is recommended as soon as practicable. One tree (Tree #4, Casuarina cunninghamiana) presents a Tolerable risk and moderate priority works are recommended within three months. The remaining four trees present a Broadly Acceptable risk level and require low priority works or no works at this time.

All pruning works should be undertaken by a qualified arborist in accordance with AS 4373-2007 Pruning of Amenity Trees. All retained trees should be re-inspected within a two-year timeframe.

The following table summarises the assessment findings and recommended works for all trees assessed. Works are prioritised as High (immediate action), Moderate (within 3 months), Low (within 12 months) or None (no works required at this time).

Quantified Tree Risk Assessment (QTRA) is an internationally recognised tree risk management framework that applies established risk management principles to tree safety. The assessment produces a Risk of Harm (RoH) value — a numerical probability comparable to everyday risk benchmarks.