Tree Stability Assessment (VTA)
The survey that estimates the risk of failure of a tree, with a visual method and, where needed, instrumental testing. To manage public and private tree assets safely.
Request an assessment
What VTA is
VTA (Visual Tree Assessment) is the recognised method for evaluating a tree's stability. It is based on a visual analysis of symptoms and defects (lean, decay, cavities, lesions, condition of the crown and of the root system), from which the propensity to failure is estimated.
When the visual examination is not enough, non-destructive instrumental testing is carried out, such as sonic tomography or a pull test, to "see" inside the trunk and measure the extent of the defects.
When it is needed
- Trees in frequented areas: parks, schools, avenues, car parks, gardens.
- After intense weather events or signs of decline in the plant.
- Management and safety of the tree assets of public bodies and condominiums.
- Disputes, insurance claims or felling/conservation requests.
- Before construction or site works near trees.
How I work
On-site inspection and recording of each specimen, a structured visual examination and, if necessary, instrumental investigations. Each tree is assigned a failure-propensity class, together with the related re-inspection interval.
What you get
A clear, defensible survey report: the condition of each tree, its risk class, the recommended interventions (pruning, bracing, felling) and the timing of the follow-up monitoring.
Every assessment is built on an inspection and on measured data: no generic wording, only operational and verifiable conclusions.
Do you have a tree or a green asset to assess?
Describe the situation: I'll reply with the first steps and an indication of the fee.
Request a site visit