Do You Need an Arborist License in New York?

Last updated: August 24, 2026

New York issues no state arborist license, and there is no arborist board here. But two things make this a state where the details matter more than the missing credential. First, in New York City you cannot touch a street tree — permitted work on city trees is done by DPR-approved private contractors, which is an approval you either have or do not. Second, forming the company itself carries a cost most states do not have: New York LLCs must publish notice in two newspapers for six successive weeks, and missing the 120-day deadline suspends the company’s authority to do business.

What New York Actually Requires

• No state arborist license — New York issues none, and ISA certification is voluntary.
• DEC pesticide applicator certification if you apply pesticides commercially. The Department of Environmental Conservation oversees the certification and supervision of pesticide applicators.
• ★ A NYC Parks tree work permit for any work on a city street tree — covering planting, pruning, decorating with lights, placing tree guards, and removing City trees or tree stumps.
• ★ DPR-approved contractor status for that work. All such tree work is completed at the owner’s expense by DPR-approved private contractors.
• Know the boundary: Parks does not issue permits for work on private property trees — the permit regime is about city-owned trees.
• ★ The LLC publication requirement under LLC Law §206 — publication once a week for six successive weeks in two newspapers in the county of the LLC’s office, one printed daily and one printed weekly, both designated by the county clerk.
• A certificate of publication with the newspapers’ affidavits annexed, filed with the Department of State with a $50 fee, within 120 days — or the LLC’s authority to carry on business is suspended.

What It Costs

Item	Cost	Notes
State arborist license	Does not exist	New York issues none
DEC pesticide applicator certification	See DEC schedule	Required for commercial pesticide application; confirm category with the Bureau of Pesticides Management
NYC Parks tree work permit	Set by NYC Parks	Required for city street trees; the work must be done by a DPR-approved contractor
New York LLC	$200	Articles of organization filed with the Department of State
Newspaper publication	Varies widely by county	Two newspapers, six successive weeks, designated by the county clerk — the single most variable startup cost in New York
Certificate of publication	$50	Filed with affidavits annexed, within 120 days

Coming From Another State

Is there an arborist license to transfer into New York?

No. New York does not license arborists, so there is no state credential for another state to transfer. Your ISA Certified Arborist credential comes from the International Society of Arboriculture rather than any state, so it moves with you untouched.

The credential that governs the work — and the one that reciprocates — is DEC pesticide applicator certification.

Pesticide certification reciprocity, and the two bars that disqualify people

New York will certify an applicator without New York examinations, but only through a narrow gate. The only exemption from the requirement to pass NYS examinations is for individuals who are certified in, and reside in, a state with which New York has a signed reciprocal agreement.

Two disqualifications catch people out, and both are absolute:

• If you are a New York State resident, you do not qualify for reciprocity. Reciprocal certification can only be issued to certified applicators who reside in the state they are seeking reciprocity from. Moving to New York first and applying afterwards closes the door — the sequence matters.
• If you have ever held a pesticide certification in New York in the past, you do not qualify. Not “currently hold” — ever held. An applicator who was certified in New York years ago, let it lapse and moved away cannot come back through reciprocity. That route is permanently closed to them and the New York examinations apply.

What you must show: home state certification in the current and prior year. A single current certificate is not enough — DEC wants continuity across two years. You apply on the DEC Reciprocity Application for Pesticide Applicator Certification form rather than the standard application.

Confirm the agreement exists before you plan around it. Reciprocity runs only with states that have a signed agreement with New York, and the list is held by DEC’s Pesticide Reporting and Certification Section. Check your specific state before assuming, because there is no general rule and the consequence of being wrong is sitting the New York exams.

Everything else on this page still applies — including the point above that in New York City the permit is rarely the hard part, and becoming an approved contractor is where the real work sits. Reciprocity on the pesticide certificate does nothing for that.

In New York City the Permit Is Not the Hard Part — Being an Approved Contractor Is

Two things shape a New York tree business, and neither of them is the arborist license the state does not issue.

The first is who is allowed to touch a city tree. NYC Parks issues a tree work permit covering planting, pruning, decorating with lights, placing tree guards, and removing City trees or tree stumps. But read the operative sentence carefully, because it is about people rather than paperwork: “All tree work will be completed at the owner’s expense by DPR-approved private contractors.” The permit governs whether the work happens. DPR approval governs whether it can be you doing it. For a new tree service in the five boroughs, that approval is the gate to an entire category of work, and it is worth pursuing early rather than discovering the first time a client asks about the tree outside their building.

The counterpart is just as important: Parks does not issue permits for work on private property trees. So the regime splits cleanly. Behind the property line, ordinary rules apply. On the street, you need both a permit and approved status. Knowing which side of that line a tree sits on is the first question on any New York City quote, and getting it wrong on a city tree is not a paperwork error.

Outside the city, the state-level requirement that reaches tree work is pesticides. The Department of Environmental Conservation oversees the certification and supervision of pesticide applicators. If your work includes spraying, injecting or treating for hire, that is the credential to hold, and the correct category and current requirements are worth confirming with DEC’s Bureau of Pesticides Management directly rather than relying on a summary.

The second thing that shapes a New York business has nothing to do with trees at all, and it catches nearly everyone. Under Section 206 of the Limited Liability Company Law, a copy of the articles of organization or a notice of formation must be published once a week for six successive weeks in two newspapers in the county where the LLC’s office is located. One must be printed daily, the other printed weekly, and both must be designated by the county clerk of that county — you do not get to shop for the cheapest paper in the state. A certificate of publication, with the newspapers’ affidavits of publication annexed, then goes to the Department of State with a $50 filing fee.

The sting is in the deadline and the county. Failure to publish and file the certificate within 120 days suspends the LLC’s authority to carry on, conduct or transact business. And because the county clerk designates the papers, the cost of publication swings enormously depending on where your office is registered — it is modest in much of upstate New York and famously expensive in Manhattan. If you are choosing where to site the company’s office, this is a real and rarely mentioned line item, and it is worth pricing before you file rather than after.

How to Get Licensed, In Order

1. Stop looking for a state arborist license — New York has none to issue.
2. If you will work in New York City, pursue DPR-approved contractor status early. It is the gate to all city street tree work.
3. Learn the permit boundary: Parks permits city trees; it does not permit private property trees.
4. Take DEC pesticide applicator certification if you will apply anything for hire, confirming the category with the Bureau of Pesticides Management.
5. File the articles of organization with the Department of State, $200.
6. Price the newspaper publication before choosing the LLC’s county — the county clerk designates the papers and the cost varies enormously.
7. Publish once a week for six successive weeks in the two designated newspapers.
8. File the certificate of publication with affidavits annexed and the $50 fee inside 120 days, or the company loses its authority to do business.

Staying Licensed

There is no state arborist license to renew in New York. What needs maintaining is your DEC pesticide applicator certification, on DEC’s own recertification cycle, and — if you work in the city — your DPR-approved contractor status, since permitted street tree work must be performed by approved contractors. On the company side, the publication obligation is a one-off at formation rather than an annual event, but the 120-day deadline is absolute: publish and file the certificate of publication late and the LLC’s authority to carry on business is suspended until it is put right. Keep the affidavits from both newspapers, because the certificate is filed with them annexed.

Frequently Asked Questions

Does New York require an arborist license?

No. New York issues no state arborist license and has no state arborist board. ISA certification is a voluntary professional credential. What the state does regulate directly is pesticide use — the Department of Environmental Conservation oversees the certification and supervision of pesticide applicators — and what New York City regulates is who may touch a city tree.

Can I prune or remove a street tree in New York City?

Not without a Parks permit, and generally not as an ordinary contractor. NYC Parks issues tree work permits covering planting, pruning, decorating with lights, placing tree guards, and removing City trees or tree stumps. The Department’s position is that all tree work will be completed at the owner’s expense by DPR-approved private contractors. Parks does not issue permits for work on private property trees.

Do I need a pesticide license for tree work in New York?

If you apply pesticides commercially, yes. The Department of Environmental Conservation oversees the certification and supervision of pesticide applicators in New York under its pesticide regulations. Confirm the correct category and current requirements with DEC’s Bureau of Pesticides Management before you apply anything for hire.

Does a New York LLC really have to publish in newspapers?

Yes, and it is not optional. Section 206 of the Limited Liability Company Law requires a copy of the articles of organization or a notice of formation to be published once a week for six successive weeks in two newspapers in the county where the LLC’s office is located — one printed daily and one printed weekly, both designated by the county clerk. A certificate of publication with the newspapers’ affidavits annexed then goes to the Department of State with a $50 filing fee. Miss the 120-day window and the LLC’s authority to carry on business is suspended.

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

Can you transfer an out-of-state pesticide certification to New York for tree work?

Sometimes. New York does not license arborists, so the credential in question is DEC pesticide applicator certification. The only exemption from the New York examinations is for people who are certified in, and reside in, a state with which New York has a signed reciprocal agreement, and you must show home state certification in both the current and prior year. Two bars are absolute: New York residents do not qualify, and anyone who has ever held a New York pesticide certification in the past does not qualify.

Sources

Source	What It Covers
NYC311 — tree work permit	What the permit covers — planting, pruning, decorating with lights, tree guards and removing City trees or stumps — that the work is completed by DPR-approved private contractors, and that Parks does not permit private property trees
NYSDEC — pesticides	That DEC oversees the certification and supervision of pesticide applicators in New York
NY Department of State — certificate of publication for a domestic LLC	LLC Law §206 publication in two newspapers once a week for six successive weeks, county clerk designation, the $50 certificate fee and the 120-day suspension rule
NY Department of State — articles of organization	The $200 filing fee for articles of organization
NYSDEC — Applying for Reciprocal Pesticide Certification	The residency condition, the permanent bar on anyone who has previously held New York certification, and the current-and-prior-year requirement
NYSDEC — Reciprocity Application for Pesticide Applicator Certification	The form used in place of the standard certification application