Tree risk management

Risk Mitigation
& Management


Solution based project


Council approved
compliance monitoring

Risk Management

Assessment and


Precision project
evaluation services

Benefits vs Risk

Tree risk management is a matter of balancing the benefits of trees with the risks that they pose. We want to help you meet your duty of care obligations in a reasonable and achievable way, proportional with your available resources and planning constraints.

When risk is realised, it can have serious consequences. Organisations and individuals must take practical measures to minimise the risk and therefore meet duty of care obligations. No matter how complex the environment and whatever challenges you face, our scientific expertise and insight-led philosophy means we are committed to delivering services that enable growth and financial return.

Arborlab takes pride in partnering with local governments to ensure the public receives value for money and the level of service they expect. We offer a range of services and tools to assist Councils in successfully fulfilling their responsibilities.

Best practice

We can help you meet your DUTY OF CARE obligations by helping you develop robust tree risks policies and processes that are defendable and follow international best practice.


Defining and auditing a risk strategy is the first step to managing tree risk. Ideally the risk strategy will be documented based on an internationally recognised system that can allow the asset owner to quantify risk.


Using the results of our risk assessments we can provide an ongoing tree maintenance plan enabling you to meet your duty of care and engage with qualified tree maintenance contractors to undertake the work.

Risk realisation

If a risk is realised, it can have serious consequences. We specialise in helping clients navigate the complex legal and social implications of significant tree failure incidents. We provide post failure assessments and reports to help all stakeholders gain an understanding of whats happened and why and how we can help avoid in the future.

Picus Sonic Tomograph

The Picus Sonic Tomograph is used for tree assessments and arborist reports in order to measure the thickness of the residual wall of trees with internal defects, such as cavities or decay, non-invasively. Most often, the Picus sonic tomograms are recorded near ground level of trees. However, acoustic tomograms also reveal important safety information about the breaking risk near branch wounds and above ground cavities.

We provide Risk Management Services to:

  • National Govt.
  • Kiwi Rail
  • DOC
  • NZTA
  • Ministry of education
  • Housing NZ
  • Parliamentary Serrvices
  • Land Development
  • Local Authorities
  • Residential
  • Storm Water
  • Power & Gas
  • Waters
  • Telecommunications
  • Transport

Talk to one of our solutions experts

With over 20 years experience our consulting team specialise in Arboriculture, Ecology and Green space asset management and sustainability