What to Ask Before Hiring an Arborist Expert for Litigation

Florida tree cases — a fallen tree damage claim, a contested HOA removal, a neighbor dispute, a storm-loss valuation — often turn on the quality of the arborist opinion behind them. The right expert can make the difference between a case that holds up and one that gets picked apart on cross. The wrong one can sink an otherwise strong file. Before you retain an arborist for litigation support, here are six questions worth asking.

1. Are they ISA Certified?

The International Society of Arboriculture (ISA) is the recognized professional credentialing body for arborists. An ISA Certified Arborist has passed a comprehensive examination, demonstrated documented field experience, completes continuing education, and adheres to a professional code of ethics.

This matters in court for one simple reason: when opposing counsel asks "what makes you an expert?" you want the answer to be more than "I work with trees." ISA certification is the baseline credential courts and insurance carriers recognize.

2. Are they TRAQ Qualified?

TRAQ — Tree Risk Assessment Qualification — is a specific, standardized methodology for evaluating tree risk. It's the framework most insurance carriers and reviewing arborists are familiar with. A report based on TRAQ methodology follows a structured process: likelihood of failure, potential targets, consequences, and risk rating.

If the arborist isn't TRAQ qualified, their risk opinion is essentially their personal judgment. If they are TRAQ qualified, their opinion is grounded in a defensible national framework. That's a meaningful difference under cross-examination.

3. Do they use CTLA methodology for valuations?

For tree damage claims involving valuation (insurance loss, replacement cost, property damage), the recognized standard is CTLA — the Council of Tree and Landscape Appraisers methodology. CTLA appraisals follow a documented calculation that includes species, condition, location, and contribution factors.

Without CTLA methodology, a "tree value" estimate is just a number. With CTLA, it's a defensible calculation that adjusters and judges recognize.

4. Do they have experience with the trees you actually have?

Florida's tree species (live oak, slash pine, sand pine, sabal palm), hurricane-driven failure patterns, soil conditions, and local tree ordinances create cases that don't map neatly to general arborist knowledge. An expert with deep Central Florida field experience brings species-level familiarity with how trees actually fail here — and that depth of regional knowledge is hard to challenge on cross.

5. Are they prepared to be objective — even when it doesn't help your case?

The most valuable arborist expert isn't the one who tells you what you want to hear. It's the one who'll honestly tell you whether your case is strong before you invest in it. Ask them directly: what would they need to see to conclude against your client's position? A thoughtful answer is the right signal.

6. Can they actually write a report you can use?

A good arborist may be a poor writer. An average arborist who writes clearly is more useful in litigation than a great arborist whose report is incoherent. Ask to see a sample report (with the client info redacted). Look for: clear organization, photo documentation with captions, defined methodology, specific findings, and conclusions that match the findings.

When to Bring an Arborist In

Common litigation scenarios where an arborist opinion changes the case:

- Fallen tree damage to a neighboring property — was failure predictable?

- Property damage claims after storms — what caused the failure?

- HOA disputes over removal — was the tree actually a hazard?

- Premises liability cases involving trees on commercial property

- Tree value disputes in property loss claims

- Causation analysis in any tree-related case

Working With Climb Corps

Climb Corps LLC is an independent ISA Certified Arborist firm serving Central Florida. We provide written expert opinion reports, tree damage causation analysis, and CTLA-based tree appraisals for attorneys, insurance counsel, and adjusters across Hernando, Citrus, Marion, and Orange counties.

To discuss a case, contact Climb Corps at (352) 397-4309 or climbcorpsllc@gmail.com.