Mature pine over a residential target area before tree assessment and pruning.

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Tree-Risk Assessment in Ottawa

A risk assessment is not a promise that a tree is safe. It is a structured look at the tree, the things that could be struck, the inspection scope and reasonable next steps within a stated time horizon.

Risk depends on the tree and the target

A cavity, lean or dead branch does not have one meaning in every setting. The assessor considers the condition, likelihood of failure, what could be struck, how the target is used and the consequences. A similar branch over an empty woodland edge and over a busy entrance creates a different management question.

Recent storms, excavation, grade change, root cutting, construction, canopy loss and changes in occupancy are useful history. Share them before the inspection so the site context is not lost.

Choose the inspection level and deliverable

Some concerns can be addressed with a limited visual review from a defined vantage point. Others need a basic full-tree inspection, measurements, climbing, testing or another specialist. The scope should say what is and is not included before the assessment begins.

The deliverable may be verbal guidance, a short written summary or a formal report. If the result is for a municipality, insurer, lawyer, construction project or board, identify that use so the author and format can be confirmed.

Recommendations and residual uncertainty

Recommendations may include moving a target, restricting access, pruning, support, monitoring, further testing or removal. Each option has limits, inspection intervals and residual risk. A recommendation should explain why it fits the stated objective rather than presenting removal as the only professional outcome.

Living trees and weather change. Reinspection after a major storm, site change or observed deterioration may be necessary even before a planned interval.

Common questions

Can a risk assessment guarantee a tree will not fail?

No. It documents observed conditions, targets, scope, uncertainty and recommendations for a stated period. Trees and weather remain dynamic.

Is a tree-risk assessment the same as a permit report?

Not automatically. A municipality may require a particular report, author qualification and set of measurements. Confirm the intended use before booking.

Will recommended work be quoted separately?

It should be. Keeping the assessment and production scope distinct makes the recommendation, price and any conflicts easier to evaluate.

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