Arboricultural Impact Assessment (AIA)

Developments often requires an Arboricultural Impact Assessment (AIA) that complies with AS 4970 -2009 “Protection of trees on development sites”. Engaging an Arboricultural Consultant to provide the tree data is part of the process of of developing a resolution. Arbor Australis Consulting has a track record of delivering assessments and complete reporting packages that meet the requirements of Local Authorities. We provide clear communication during the development of site focused reporting that is easy to understand.


All of our consultants meet the minimum AQF level 5 qualification required to deliver reporting and supervision of work around trees. We provide practical based solutions to issues that arise and proactively look for resolutions.


Our AQF Level 5 Consulting Arborists are licensed and trained users of the Quantified Tree Risk Assessment (QTRA), the Tree Risk Assessment Qualification (TRAQ) and VALID tree risk assessment methodologies. Tree risk assessment forms an integral part of our everyday operations; which assist in the identification, assessment and quantification of risks in trees.


All of our consultants meet the minimum AQF level 5 qualification required to deliver reporting and supervision of work around trees. We provide practical based solutions to issues that arise and proactively look for resolutions.


Investing in GIS and GPS equipment allows us to produce high quality product and services, therefore optimizing the outcome of the projects. GIS mapping collects bulk tree data to be overlaid on an aerial image and provides a spatial map. High accuracy, post-processed, GPS mapping allows data collected in the field to be overlaid on a CAD drawing, improving the productivity and accuracy of tree protection plans. We can provide both GPS and GIS presentation in a web-based mapping format.


Tree protection plans assess the current tree condition and the likely impact of development on tree health and structure. It is a requirement of most local authorities to provide Tree Protection Plans and an Arboricultural Impact Assessment in accordance with AS 4970-2009 “Protection of Trees on Development Sites” for most development projects.

From answering a specific information request to the development of a full Tree Protection Plan, in CAD format and/or with site supervision by an AQF level 5 Arborist, we have the skills and experience to guide our clients to achieve a sound arboricultural outcome.


Establishing the amenity value of trees is a powerful tool to arboriculture and urban forestry. Using documented systems developed to calculate fair and reasonable estimations of the value of individual trees, we are able to provide an objective amenity value.


Arbor Australis Consulting provides comprehensive assessment and reporting to address tree related legal matters. We have experience with planning and environment court and litigation cases in relation to tree failures.


During the construction stage of development projects, the Project Arborist oversees works and key areas of construction in relation to tree protection and documentation. The Project Arborist works with construction crews to resolve conflicts between access issues and tree protection.



Our understanding of soil and plant science allows us to provide a scientifically based resolution to improving plant health. This is strengthened through the use of modern technology, such as ArborCheck, that allows documentation of plant health. This information collected from an assessment is used to both monitor and develop plant health care strategies. Management strategies are likely to include Soil Decompaction, Watering, Mulching and Soil Biology improvement. It is the balance between all of these factors that provides the opportunity for improved plant health.


Soil improvement is frequently the initial step in any tree rehabilitation plan. The improvement of gas exchange into the soil profile is key to revitalise soil biology and plant health and ultimately the soil’s structure and water holding capacity. Getting the soil healthy will directly impact the health of the plant.


The principle key to maintaining plant health is to establish and maintain optimum soil moisture levels. Understanding soil structure and the species requirements are a fundament part of developing a management plan that improves and maintains plant health. Without plant available water in the soil structure, the plant cannot absorb nutrients.


The philosophy behind mulch is to simulate the leaf litter layer of a natural growing environment. Maintaining an organic blanket over the soil helps to retain soil moisture whilst proving a food source for soil biology. This will lead to an improvement in the organic levels for soil and plant health.


Soil biology plays a large role in providing plants with essential nutrients. Urban soils typically have poor biology and need to be improved through a combination of management techniques. Combining all the factors of an organic approach to plant maintenance will improve soil biology and plant health.


Measuring the Chlorophyll function in leaves gives us an understanding of tree stress. The measurements will show a decline in health before it is visible in the crown of the tree. Using this technology, we monitor trees health state over time and can adjust programs to improve outcomes.


Brisbane - 07 3379 7793
33 Monier Rd, Darra QLD 4076


Sunshine Coast - 07 5446 6530
75 Skybolt Rd, Valdora QLD 4561

Sunshine Coast


Business Hours
Our office hours are Monday to Friday from 7am to 4pm.

Postal Address
PO BOX 568,
Sherwood QLD 4075

Phone Number
07 3379 7793