Short Answer

An insurance adjuster may need a consulting arborist when a tree-related insurance claim involves technical questions about tree failure, the cause or extent of damage, pre-existing conditions, structural stability, recovery, or tree value. A consulting arborist can investigate the available evidence, evaluate the tree and surrounding site conditions, review photographs and records, and provide an independent professional opinion. This can be especially important when the cause of a loss is disputed, significant property damage has occurred, or the claim may involve subrogation, litigation, or a disagreement over the value of a damaged or destroyed tree.

When Should an Insurance Adjuster Involve a Consulting Arborist?

Not every insurance claim involving a tree requires specialized arboricultural expertise. Some claims can be evaluated using ordinary property damage documentation and estimates.

However, an adjuster may need a consulting arborist when the claim raises questions that require knowledge of tree biology, structural conditions, failure mechanisms, or tree appraisal.

Situations in which an arborist may be useful include:

• A tree falls onto a home, vehicle, building, or other property.

• A large branch fails and causes significant damage.

• The parties disagree about why a tree failed.

• There are questions about whether the tree had defects before the incident.

• A tree appears to have been damaged by construction or excavation.

• A tree has sustained damage that may affect its long-term health or stability.

• A claim involves the death or removal of a valuable tree.

• The insurer needs an independent assessment of the tree's condition or value.

• Evidence suggests that multiple factors may have contributed to the loss.

• A claim may lead to a dispute, subrogation investigation, or litigation.

The need for a consulting arborist depends on the specific questions involved, the significance of the loss, and the evidence available.

Can a Consulting Arborist Determine Why a Tree Fell?

A consulting arborist may be able to determine the factors that contributed to a tree or branch failure by examining the physical evidence and reconstructing the circumstances surrounding the incident.

Depending on the condition of the site, the investigation may include:

• Examining the trunk, branches, stump, and remaining root system

• Looking for decay, cavities, cracks, and other structural defects

• Evaluating root damage and soil conditions

• Reviewing photographs taken before and after the incident

• Considering weather conditions at the time of failure

• Reviewing previous inspections, pruning records, and maintenance history

• Evaluating nearby construction, excavation, or changes to the property

• Considering whether multiple factors contributed to the failure

The goal is to understand what the evidence supports about the failure and the tree's condition before the incident.

A fallen tree does not automatically establish that the tree was hazardous beforehand. Similarly, the occurrence of a storm does not necessarily explain every contributing factor.

An arborist's conclusions should reflect the available evidence and acknowledge any limitations that prevent a definitive determination.

How Can an Arborist Help Distinguish Storm Damage From Pre-Existing Tree Conditions?

Insurance claims involving fallen trees may raise questions about whether a storm caused the failure or whether an existing defect contributed to the loss.

These questions can be important when the parties disagree about the tree's prior condition or the circumstances leading to the incident.

A consulting arborist may evaluate:

• Whether decay, cracks, root problems, or other defects were present

• Whether the tree showed signs of decline before the incident

• Whether visible warning signs may have existed before the failure

• Whether the physical evidence is consistent with the reported weather event

• Whether the tree had sustained previous damage

• Whether photographs or inspection records document earlier conditions

• Whether construction, soil disturbance, or other environmental changes may have affected the tree

Some defects may be visible from the outside, while others may be concealed within the trunk or root system. A condition discovered after a tree breaks apart may not necessarily have been apparent beforehand.

The arborist can provide an independent assessment of the tree-related facts.

Whether a loss is covered under a particular insurance policy is a separate question that depends on the policy language and applicable insurance terms.

When Is an Arborist Needed to Evaluate the Extent of Tree Damage?

A tree may survive an incident but sustain damage that affects its health, structure, or expected lifespan.

For example, a vehicle impact, construction activity, severe weather, or excavation may damage the trunk or root system without immediately killing the tree.

A consulting arborist may evaluate whether the damage is likely to be temporary, whether the tree may recover, and whether further assessment or corrective work may be appropriate.

The evaluation may consider:

• The location and severity of trunk or branch injuries

• The extent of visible root damage

• The tree's overall condition before and after the incident

• Signs of declining health or structural instability

• The likely consequences of the damage

• Whether monitoring, treatment, pruning, or removal may be warranted

• Whether additional evidence or diagnostic investigation is needed

The appropriate recommendations depend on the particular tree and the nature of the damage.

This assessment can help an adjuster better understand the difference between superficial injury, damage that may affect long-term condition, and damage that may compromise the tree's structural stability.

Does an Insurance Adjuster Need an Arborist to Determine Tree Value?

An arborist or qualified tree appraiser may be needed when a claim involves the value of a damaged, destroyed, or removed tree.

Tree valuation can involve more than the cost of cutting down a tree or removing debris. Depending on the circumstances, the evaluation may consider the tree's species, size, condition, location, functional contribution to the landscape, and the nature of the loss.

A qualified professional may be asked to evaluate:

• Whether the tree was damaged beyond reasonable recovery

• Whether the tree has died or requires removal

• The extent of damage to a tree that remains standing

• The appropriate appraisal method for the assignment

• The evidence supporting the estimated value

• Whether restoration or other corrective work is appropriate

The method used depends on the purpose of the appraisal and the facts of the case.

It is also important to distinguish the appraised value of a tree from the amount payable under an insurance policy. Policy limits, exclusions, coverage provisions, and other applicable terms may affect what an insurer owes. An arborist provides professional tree-related findings and valuation when qualified; the insurer evaluates the claim under the applicable policy.

What Information Should an Adjuster Provide to a Consulting Arborist?

The quality of an arborist's evaluation often depends on the evidence available. When possible, the adjuster should identify the specific questions that need to be answered and provide relevant documentation.

Useful information may include:

• Photographs and videos: Images of the tree, failure point, roots, damaged property, and surrounding site.

• Incident details: The date of the loss, reported circumstances, and known weather conditions.

• Prior tree records: Earlier inspection reports, tree risk assessments, maintenance records, or removal recommendations.

• Property documentation: Relevant surveys, site plans, or records showing the tree's location.

• Construction records: Excavation plans, contractor reports, or other documents when construction may have contributed.

• Damage estimates: Available estimates for tree work, debris removal, property repairs, or restoration.

• Witness information: Accounts from people who observed the tree before or during the incident.

• Claim questions: Specific issues the adjuster needs the arborist to investigate.

The appropriate documentation will vary by case. The adjuster and arborist can determine which materials are relevant to the assignment.

Why Is It Important to Contact an Arborist Before the Tree Is Removed?

Early involvement can be particularly valuable when the cause of a tree failure or the extent of damage may become disputed.

After a tree falls, cleanup crews may cut it apart, remove the stump, haul away the wood, or alter the surrounding site. Those actions can eliminate evidence that might help explain how the failure occurred.

Before cleanup changes the scene, an arborist may be able to document:

• The failure point and the condition of the wood

• Root damage and the condition of the root plate

• Evidence of decay or structural defects

• Soil conditions around the tree

• The tree's position relative to damaged property

• Other physical evidence relevant to the incident

When immediate removal is necessary for safety or access, photographs and other documentation may help preserve information about the original conditions.

For significant losses or disputed claims, an adjuster may want to consider whether an arborist should inspect the site before evidence is disturbed. Safety, emergency response, and any applicable requirements should take priority.

Can a Consulting Arborist Help With an Insurance Subrogation Investigation?

Potentially, yes.

Subrogation generally refers to an insurer seeking recovery from another party when the insurer has paid a claim and believes that party may be legally responsible for the loss.

A tree-related subrogation matter may raise questions about whether a tree had a significant defect, whether relevant warning signs were present, whether construction or maintenance activities contributed to the failure, or what caused the damage.

A consulting arborist may assist by:

• Investigating the tree failure

• Evaluating physical evidence and site conditions

• Reviewing photographs and historical records

• Assessing whether the evidence supports a particular explanation for the failure

• Preparing written findings within the scope of the assignment

• Explaining technical arboricultural issues to attorneys or other professionals

• Providing expert testimony when appropriate

The arborist does not determine legal liability or decide whether the insurer is entitled to recover its payment. The arborist provides specialized findings that may help attorneys, insurers, and other decision-makers evaluate the technical issues involved.

What Is the Difference Between a Tree Service Estimate and a Consulting Arborist's Report?

A tree service estimate generally describes proposed work and its cost. Depending on the company and assignment, it may include removal, pruning, debris cleanup, or other services.

A consulting arborist's report addresses a different purpose: evaluating the tree and answering specific professional questions.

Depending on the assignment, a report may document:

• The tree's condition and visible defects

• The nature and extent of damage

• Potential causes of failure or decline

• Relevant site conditions

• The evidence reviewed

• Professional findings and limitations

• Tree appraisal findings, when included and within the arborist's qualifications

• Recommendations for further investigation or appropriate action

A tree service estimate may be sufficient when the primary question concerns the cost of necessary work. A consulting arborist may be more appropriate when the claim depends on why the damage occurred, whether a tree can recover, or how the loss should be evaluated.

In some claims, both types of documentation may be useful.

Does Every Tree-Related Insurance Claim Require a Consulting Arborist?

No.

A consulting arborist is not necessary for every claim involving a fallen tree, broken branch, or damaged landscape.

The need for specialized evaluation depends on the nature of the loss and the questions that must be answered.

An arborist may be particularly useful when the claim involves significant property damage, a disputed cause of failure, uncertainty about pre-existing conditions, a complex tree valuation, construction-related damage, or potential litigation.

When a claim involves technical questions that cannot be adequately resolved through ordinary photographs and repair estimates, an independent arboricultural evaluation may help clarify the facts.

Why Does Independent Arboricultural Expertise Matter in Insurance Claims?

Insurance claims involving trees can require a clear understanding of biological processes, structural defects, environmental conditions, and the factors that contribute to tree failure.

An independent consulting arborist can evaluate the available evidence without relying solely on assumptions about what caused the loss.

That distinction can be important when an insurer, property owner, contractor, or another party has a different interpretation of the incident.

A well-supported professional opinion should explain the evidence considered, the reasoning behind the conclusions, and any limitations affecting the evaluation. The goal is to clarify the technical tree-related issues so that the claim can be assessed using a better understanding of the facts.

About Marty Shaw, RCA

Marty Shaw, RCA is a consulting arborist, investigator, tree and plant appraiser, author, and expert witness with decades of experience addressing complex tree matters.

His work includes tree failure investigations, tree risk assessment, construction-related tree damage, appraisal, insurance matters, property disputes, and litigation involving trees and landscapes.

Green Season Consulting provides independent arboricultural expertise for attorneys, insurance professionals, property owners, organizations, and others who need professional analysis of difficult tree-related questions.

When an insurance claim involves disputed tree damage, questions about the cause of a failure, or the value of a damaged or destroyed tree, Green Season Consulting can review the circumstances and determine whether consulting arborist, appraisal, or expert witness services may be appropriate.

View Marty Shaw's Professional Resume & Qualifications

Contact Marty Shaw About a Case:

Email: expert@greenseasonconsulting.com Call: (615) 794-4377

This information is provided for general educational purposes and is not legal advice. Questions involving insurance coverage, negligence, liability, ownership, damages, or other legal rights should be discussed with the appropriate qualified professionals.