A Property Owner’s Guide to Arborist Certifications and What They Mean

When you hire someone to care for your trees, you’re trusting them with living things that can take decades to grow, and that can cause serious damage if managed incorrectly. When a tree care company says their team is “certified,” it’s worth investigating what they are certified in and who granted the certification.

Types of Arborist Certifications Explained (ISA, ASCA, TCIA)

There are several different types of certification courses that arborists can complete. They vary in their intensity, specialty, and outcome. While you always want to hire a certified professional, it's important to know what type of professional you are working with. Here are the most common certifications arborists receive:

ISA Certified Arborist® (CA): What It Is and Why It Matters

What it is: An ISA Certified Arborist® is a tree care professional who has passed a comprehensive exam administered by the International Society of Arboriculture and has at least three years of hands-on experience in arboriculture. It is the foundational credential in professional tree care and the baseline standard for anyone calling themselves a professional arborist.

What it requires: Passing a comprehensive written exam covering tree biology, soil science, pruning, diagnosis, risk management, and safety. Candidates must also have at least three years of full-time experience in arboriculture. The credential must be renewed every three years through continuing education.

What it means to you: An ISA Certified Arborist® has demonstrated a working knowledge of tree care fundamentals. It's the minimum credential you should look for when hiring for any tree work such as pruning, diagnosis, removal, or health assessment.

Why it matters who you hire: An uncredentialed worker cutting the wrong branches, or removing a tree improperly can cause irreversible damage to the tree, create new hazards, or void your homeowner's insurance coverage if something goes wrong. Unlike many trades, tree care has no universal licensing requirement in most states, which means anyone can call themselves a tree company without any formal training or accountability. The ISA Certified Arborist® credential is one of the most reliable indicators that the person assessing your trees has earned the right to do so.

ISA Board Certified Master Arborist® (BCMA): The Highest Arborist Credential

What it is: The ISA Board Certified Master Arborist® is the highest credential ISA offers, which is roughly the equivalent of a board certification in medicine. There are fewer than 3,000 BCMAs worldwide.

What it requires: To earn the BCMA, an arborist must first hold the ISA Certified Arborist® credential for at least four years, accumulate a minimum of five years of experience in arboriculture, and pass a rigorous multi-part examination that goes substantially deeper than the CA exam. Many BCMAs also hold advanced degrees in forestry, horticulture, or plant sciences.

What it means for you: A BCMA represents mastery-level expertise. When a tree situation is complex — such as a mature specimen tree showing stress symptoms, a disputed removal, or a high-value landscape, a Board Certified Master Arborist® brings a depth of knowledge that greatly surpasses baseline certification.

ISA TRAQ Qualification: When You Need a Formal Tree Risk Assessment

What it is: The ISA Tree Risk Assessment Qualification (TRAQ) is a specialized credential focused specifically on the systematic evaluation of tree risk. It is purpose-built for formal, documented risk assessments — going beyond what a baseline certification covers.

What it requires: Completing an ISA-approved two-day training course followed by a written exam. TRAQ-qualified arborists learn to apply a standardized methodology (the ISA/ANSI A300 framework) to assess the likelihood of tree failure and the potential consequences of that failure.

What it means for you: If you have a large tree near your home, a tree over a frequently used area, or a neighbor who's concerned about a tree on your property, a TRAQ-qualified arborist is who you want to assess the situation. Their assessment follows a documented, reproducible process, which matters for your peace of mind and, if needed, for legal or insurance purposes.

ASCA Registered Consulting Arborist® (RCA): For Independent Expert Opinions

What it is: An ASCA Registered Consulting Arborist® is a credential issued by the American Society of Consulting Arborists (ASCA), the professional organization specifically for arborists who work as independent consultants rather than service providers. It is the gold standard for unbiased expert assessment.

What it requires: Applicants must hold an ISA Certified Arborist® credential, have extensive consulting experience, submit a peer-reviewed case study portfolio, and pass a written and oral examination. The credential emphasizes professional ethics, independence, and the ability to provide unbiased expert opinions — including expert witness testimony in legal proceedings.

What it means for you: A Registered Consulting Arborist's business model is built on expertise, not tree work. RCAs are frequently called upon for litigation support, insurance claims, property valuation disputes, and situations where you need an opinion completely independent of any service being sold. When the stakes are high and objectivity matters, an RCA is the right credential to look for.

Other Arborist Certifications: Utility, Municipal, Climber, and Safety

ISA Certified Arborist Utility Specialist®: For arborists who work in proximity to power lines and utility infrastructure. Utility work has specific safety and regulatory requirements, and this credential demonstrates specialized training for those circumstances.

ISA Certified Arborist Municipal Specialist®: Focuses on the unique challenges of urban and community forestry — street trees, public right-of-way management, urban tree inventories, and policy. Relevant if you're working with a municipal tree program or managing trees in a commercial or institutional setting.

ISA Certified Tree Worker / Climber Specialist®: Focused on the technical and physical aspects of aerial tree work, such as climbing, rigging, and safe removal practices. This credential reflects field-level expertise rather than assessment or diagnostic knowledge.

CTSP (Certified Treecare Safety Professional): Issued by the Tree Care Industry Association (TCIA), the CTSP credential focuses on safety program management within tree care operations. A CTSP on a crew indicates a company-level commitment to workplace safety practices.

ISA Gold Canopy Partner: What This Company-Level Designation Means

This one is a little different, as it's not a credential an individual arborist earns, but a company-level designation from ISA that's worth understanding when you're evaluating a tree care provider.

To become a Gold Canopy Partner, a company must maintain a specified percentage of its workforce as ISA Certified Arborists®, commit to using ISA standards in its operations, and support ongoing professional development for its team. It's ISA's way of recognizing organizations that build their business around credentialed expertise. Globally, fewer than a dozen companies hold this designation, making it one of the more exclusive marks of organizational commitment in the industry.

When you see it listed on an individual arborist profile in the ISA directory, it indicates that their employer holds Gold Canopy Partner status. It won't appear on every arborist's profile because not all companies participate in the program, and it's tied to the company rather than the individual's own qualifications.

5 Questions to Ask Before Hiring a Tree Care Company

Credentials are an important foundation, but they're not the whole picture. Here are the key questions worth asking any tree care company before work begins:

1. Are you insured, and can you show proof? Any reputable tree care company should carry both general liability insurance and workers' compensation coverage. General liability covers damage to your home or yard if something goes wrong. Workers' comp protects you if a crew member is injured on your property. Ask to see proof of a certificate of insurance before anyone sets foot in your yard.

2. Who specifically will be doing the work? The person who does the assessment isn't always the same person who shows up with a chainsaw. It's reasonable to ask whether the crew performing the work includes certified professionals, or whether the credential belongs only to the person who sold you the job.

3. Do you follow ANSI A300 standards? The American National Standard for Tree Care Operations (ANSI A300) sets the industry benchmark for how tree pruning, removal, and other work should be performed. A company that references and follows these standards is signaling that their work is held to a measurable, professional bar — not just their own judgment.

4. Can you provide a written assessment or report? For anything beyond routine pruning, a written summary of findings, recommended work, and reasoning is a reasonable expectation. This is especially important for tree risk evaluations, where documentation can matter for insurance or legal purposes down the road.

5. What happens if something goes wrong? Understanding how a company handles complaints, damage claims, or unexpected issues before you hire them tells you a lot about how seriously they take accountability.

How to Verify an Arborist's Certification Is Real and Current

The ISA maintains a public, searchable directory of all active credential holders. You can search by name and view their current credentials, when they were earned, and their listed employer. If someone claims to be ISA certified and you can't find them in that directory, the credential is either expired or the claim is inaccurate.

For ASCA-Registered Consulting Arborists, verification is available through the ASCA membership directory on its website.

Why SavATree: ISA Gold Canopy Partner and Certified Arborist Team

SavATree is an ISA Gold Canopy Partner, which is a designation that reflects our company-wide commitment to employing ISA-credentialed professionals and maintaining the standards ISA sets for the industry. Our arborists include ISA Certified Arborists®, Board Certified Master Arborists®, and TRAQ-qualified professionals across our branches nationwide.

Our arborists' certifications are publicly verifiable through the ISA directory, so you can look up any member of our team by name to confirm their credentials are current.

When you work with us, you'll know exactly who is assessing your property and what they're qualified to evaluate. That transparency is a reflection of the standard of care our customers deserve.

Choosing the Right Arborist Certification for Your Needs

Tree care done right starts with hiring someone who is qualified for the job. Before any work begins on your property, ask to see credentials, verify them in the ISA directory, and understand what they cover:

ISA Certified Arborist® is the baseline for all routine tree work, like pruning, health assessment, and removal.
TRAQ brings documented, systematic risk assessment for trees near structures or high-traffic areas.
BCMA means mastery-level judgment for complex or high-value situations.
ASCA RCA is the right call when you need an independent expert opinion with nothing to sell you.

Trees are long-term investments. The wrong move can set their trajectory back or end it entirely. It takes only a few minutes to verify who you are hiring, and the payoff is the health and longevity of your trees for decades to come.