How to Get a Rhode Island Arborist License

Last updated: August 24, 2026

Rhode Island licenses every practitioner of arboriculture, and it is one of the cheapest credentials in the trade to get. The Department of Environmental Management runs it: a $25 exam passed at 70%, offered four times a year, and a $25 annual license that expires every 31 December. If you already hold an ISA certification, you may be exempted from the exam altogether and simply pay the fee. The catch is on the other side of the ledger: Rhode Island does not make insurance a condition of the license, so nothing in the process forces you to think about cover.

What Rhode Island Actually Requires

• A license for all practitioners of arboriculture. The state requires that everyone practicing arboriculture be licensed by DEM, and that the license be renewed annually.
• Work that counts as arboriculture: the care and maintenance of trees, including tree bracing, tree pruning, cavity treatment of trees and hazardous tree removal.
• A category: the Standard Arborist License covering arboriculture generally, or the Limited Utility Arborist License for utility line clearance work.
• A passing exam score of 70% or higher on an exam covering all phases of arboriculture.
• Registration at least two weeks before the exam date through the online DAFE portal. Exams run on the last Friday of January, March, June and October.
• Or proof of current ISA certification — exemptions to the exam may be permitted on proof of up-to-date certification with the International Society of Arboriculture. The license fee still applies.
• Licensing for Tree Wardens as defined in RI General Law §2-14.
• No insurance requirement in the licensing rules — which is a gap in your protection, not a saving.

What It Costs

Item	Cost	Notes
Exam fee	$25	Pass mark 70%; offered the last Friday of January, March, June and October
Exam retake	$10	DEM describes the reduced rate as applying within 12 months of the original exam and the regulation describes it by calendar year — confirm with DEM before you rebook
Annual license fee	$25	Expires 31 December and renews yearly; payable even if the exam is waived
ISA certification route	Varies	Current ISA certification may exempt you from the exam entirely
General liability insurance	Not required for the license	Not imposed by DEM’s licensing page or by 250-RICR-70-00-1 — the risk is still yours
Rhode Island LLC	$150	Articles of organization, Form 400

Coming From Another State, or Already ISA Certified

Can you transfer an out-of-state arborist license to Rhode Island?

Rhode Island does not transfer another state’s license outright — but it will let the right credential get you out of the exam, which is the expensive part.

DEM lists three ways to satisfy the credential requirement when you apply for or renew an RI arborist license. You must have one of:

• a current RI Arborist License (for a renewal);
• a passing score on the RI Arborist Exam within the last 12 months; or
• an ISA Arborist Certification, or an approved equivalent state arborist license.

That third option is the one to use if you are moving in. DEM puts it plainly: “Exemptions to the exam may be permitted upon proof of up-to-date arborist certification with the International Society of Arboriculture (ISA).” If you hold a current ISA certification, or a state arborist license DEM treats as equivalent, you apply through the DAFE Online Permit Application Portal for the license itself rather than sitting the exam.

What the exemption does not do is waive the fee. The $25 yearly license fee still applies. What you save is the $25 exam fee, the scheduling — exams run only several times a year, with pre-registration — and the trip, since every exam is held at The Foundry, 235 Promenade Street, Providence.

If you do have to sit it: the pass mark is 70%, a retake within 12 months of the original exam date costs $10 rather than $25, and there are no refunds or credits for no-shows. The exam is also available in Spanish on request — ask for the Spanish version when you arrive, and note that ISA sells Spanish study materials.

Two things worth knowing about the wider picture. Rhode Island requires all practitioners of arboriculture to be licensed, and that includes Tree Wardens as defined in R.I. Gen. Laws § 2-14. As of 2024 there were more than 700 active licensed arborists in the state. The governing rules are the Rules and Regulations for Licensing and Registration of Arborists, 250-RICR-70-00-1.

The practical sequence for someone relocating: confirm your ISA certification is current before you apply, because the exemption turns on it being up to date — a lapsed certification puts you back in the exam queue, and the queue only opens a few times a year.

A $25 License — and Nothing in It Makes You Carry Insurance

Two things make Rhode Island unusual, and they pull in opposite directions.

First, the barrier is genuinely low. A $25 exam, a 70% pass mark, and $25 a year. Put that beside the other states that actually license arborists and the gap is stark: Louisiana runs a $150 exam and $125 a year, and Maine’s annual fee is capped by statute at $180. Rhode Island is asking for a fraction of either. And if you hold a current ISA certification, exemptions to the exam may be permitted on proof of it — so an experienced arborist moving into the state may simply pay $25 and be licensed. That is a real advantage, and it is worth taking seriously rather than putting off.

The flip side of a cheap license is a narrow one. Timing matters more than money here. The exam runs only four times a year — the last Friday of January, March, June and October — and you must register through the DAFE portal at least two weeks beforehand. Miss the October date without an ISA exemption and your next opportunity is January. For a seasonal trade, that is the difference between working a spring and sitting one out, so the calendar is the thing to plan around, not the fee.

Second, and this is the part to take seriously: the licensing rules do not require you to be insured. Neither DEM’s arborist licensing page nor the governing regulation, 250-RICR-70-00-1, imposes a liability insurance requirement. That is a real contrast with the states around it. Maine defines adequate insurance as $150,000 per occurrence and $300,000 aggregate and makes every licensee sign an affidavit to carry it. Louisiana checks proof of general liability and workers compensation at every single renewal. Texas writes the minimum into its Agriculture Code. Rhode Island does none of that.

It would be easy to read that as one less cost. It is the opposite. The reason those other states legislate a minimum is that tree work generates exactly the claims that end small companies — a limb through a roof, a dropped section into a car, a groundworker hurt on a residential job. Rhode Island has simply left that judgment to you. Nothing in the license process will prompt you, no renewal notice will ask for a certificate, and no random audit will catch the gap. The first time anyone checks may be the customer whose garage you have just damaged.

One narrow exemption is written into the rules: pruning of Christmas trees, or of trees that provide an agricultural crop and are grown for agricultural purposes on private lands, falls outside the licensing requirement. That is genuine agricultural work — it is not a route into residential tree care.

How to Get Licensed, In Order

1. Check whether ISA certification exempts you. If your certification is current, you may be able to skip the exam and simply pay the license fee.
2. If not, pick your exam date early — the last Friday of January, March, June or October, and only those.
3. Register through the DAFE portal at least two weeks before the date, and pay the $25 exam fee.
4. Decide on your category — Standard Arborist for general work, Limited Utility Arborist for line clearance.
5. Pass at 70% or better on an exam covering all phases of arboriculture.
6. Pay the $25 annual license fee and diary the 31 December expiry.
7. Arrange liability cover anyway. Rhode Island will not ask you for it, which is precisely why it is easy to skip and expensive to have skipped.
8. Register the business entity so the contract, the certificate and the bank account sit behind a company rather than behind you personally.

Staying Licensed

Rhode Island arborist licenses expire on 31 December and must be renewed every year at $25. DEM sends renewal reminders in the fall, but the expiry date does not move, so treat the reminder as a courtesy rather than the trigger. Because there is no insurance condition attached to renewal, nothing in the annual cycle will check whether your cover is still in force — that review is yours to run. If you are working under an ISA exemption rather than a passed exam, keep the certification current, because the exemption depends on proof of up-to-date certification.

Frequently Asked Questions

Do I need a license to be an arborist in Rhode Island?

Yes. The State of Rhode Island requires that all practitioners of arboriculture be licensed by the Department of Environmental Management, and that the licenses be renewed annually. Arboriculture is defined as the care and maintenance of trees, and includes work such as tree bracing, tree pruning, cavity treatment of trees and hazardous tree removal. All Tree Wardens as defined in RI General Law section 2-14 must be licensed as well.

How much does a Rhode Island arborist license cost?

$25 for the exam and $25 a year for the license itself. A retake costs $10. For scale, Louisiana charges a $150 exam and $125 a year, and Maine’s annual fee is capped by statute at $180 — Rhode Island is a fraction of either.

What is on the Rhode Island arborist exam and what score do I need?

The Standard Arborist exam covers all phases of arboriculture and requires a minimum score of 70% to pass. It is offered four times a year — the last Friday of January, March, June and October — and you must register through the online DAFE portal at least two weeks before the exam date.

Does Rhode Island require arborists to carry insurance?

Not as a condition of the license. Neither DEM’s arborist licensing page nor the governing regulation, 250-RICR-70-00-1, imposes an insurance requirement — unlike Maine, which sets a $150,000 per occurrence minimum, or Louisiana, which checks proof at every renewal. Liability cover in Rhode Island is a commercial decision rather than a licensing one, which means the exposure sits entirely with you.

Tree work sits alongside our full guide to starting a landscaping business in Rhode Island, and the wider guide to starting a business in Rhode Island.

Can you transfer an out-of-state arborist license to Rhode Island?

Not as a direct transfer, but Rhode Island will accept an ISA Arborist Certification or an approved equivalent state arborist license in place of sitting the RI Arborist Exam. DEM states that exemptions to the exam may be permitted on proof of up-to-date ISA certification. The $25 yearly license fee still applies; what the exemption saves is the $25 exam fee and the wait, since exams run only several times a year and are all held in Providence.

Sources

Source	What It Covers
RI DEM — Arborist licensing	The requirement that all practitioners of arboriculture be licensed, the $25 exam and $10 retake, the 70% pass mark, the four annual exam dates, the two-week DAFE registration window, the ISA exemption, the $25 annual fee and the 31 December expiry
250-RICR-70-00-1 — Licensing and Registration of Arborists	The definition of arboriculture, the Standard and Limited Utility Arborist categories, the fee structure and the Christmas tree and agricultural crop exemption
RI DEM — licensed Rhode Island arborists	The public register of currently licensed arborists
Rhode Island Department of State — Form 400	The $150 filing fee for Rhode Island articles of organization
Rhode Island DEM — Arborist Licensing	The three ways to qualify, the ISA exam exemption, exam and license fees, retake pricing and exam locations