Arboricultural Impact Assessment
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An Arboricultural Impact Assessment (AIA) is a detailed report prepared by a qualified arborist that evaluates how a proposed development may affect existing trees on or near the site. In accordance with AS 4970 – Protection of trees on development sites, the assessment identifies which trees can be retained, which may need to be removed, and provides clear recommendations for tree protection and management throughout the construction process
Why is an Arboricultural Impact Assessment necessary?
Ensures compliance with council and planning regulations.
Prevents unnecessary removal of valuable or protected trees.
Protects trees from structural damage and health decline and thereby mitigating risk to public and private safety and property damage
Supports sustainable development by integrating trees into project planning.
Provides clear documentation for planning approvals and construction management.
Our Arboricultural Impact Assessment Process
We follow industry best practices and guidelines from the International Society of Arboriculture (ISA) to ensure accurate and reliable evaluations.
- Step 1: Site Survey & Preliminary assessmentDocument existing trees, their species, condition, location, and suitability for retention.
- Step 2: Impact AnalysisAssess how construction may affect the trees’ root zones, structure, and overall health.
- Step 3: Retention & Removal PlanIdentify which trees can be retained and which may need removal.
- Step 4:Tree Protection MeasuresProvide practical strategies to protect trees during and after construction.
- Step 5: Formal ReportingDeliver a formal report aligned with council submission requirements.
Who Needs an Arboricultural Impact Assessment?
Property developers
Builders and contractors
Architects and urban planners
Councils and government bodies
Homeowners planning major renovations or new builds
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