Do You Need an Arborist License in New York?

By StartBusinessByState·Publisher: Robert Smith·Research process

Last updated: November 4, 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.
• For pesticide work, meet DEC’s applicator/technician and supervision requirements in the appropriate category. The business also needs registration before offering, advertising or performing pesticide applications for hire. Business registration requirements.
• ★ 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.
• NYC Parks does not issue its tree-work permit for private-property trees. That does not exempt private work from other applicable local tree-protection, zoning or construction requirements; verify the property and municipality.
• ★ 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 certification and business registration	Use current DEC schedules	Individual certification/supervision and registration of the pesticide business are separate obligations
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	Obtain quotes from the designated papers	Two newspapers for six successive weeks; charges depend on the county and papers
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.
• DEC says anyone who previously held New York pesticide certification is ineligible for initial certification through reciprocity. Ask DEC about reinstatement, recertification or examination requirements for your record; ineligibility for reciprocity alone does not establish which restoration route applies.

Use DEC’s state/category chart rather than applying one experience rule to every state. Its current chart requires current-and-prior-year home certification for New Jersey, Ohio and Indiana; Pennsylvania requires two years of verifiable experience and Indiana also requires one year. Submit the state-specific proof and residency evidence.

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.

Pesticide reciprocity does not replace business registration or NYC tree-work approvals. Confirm each requirement separately before accepting that work.

NYC Street-Tree Work Requires Both the Permit and Contractor Approval

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.

NYC Parks distinguishes City trees from private-property trees. Its permit does not apply to private trees, but other local protections, development approvals or safety requirements may. Establish the tree’s ownership and applicable rules before quoting.

Pesticide rules apply throughout New York, including NYC. For treatments covered by those rules, use appropriately certified personnel and required supervision, and register each business location offering the service. DEC also requires specified liability insurance for registered businesses. DEC’s business rules; individual certification.

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.

Complete LLC publication and the certificate filing within 120 days. Failure suspends the LLC’s authority until the statutory cure is completed; it does not by itself mean permanent dissolution. Price the county-clerk-designated newspapers before budgeting rather than assuming a fixed upstate or Manhattan price.

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. Check NYC Parks requirements for City trees and any separate rules affecting private-property trees at the actual address.
4. Before offering pesticide treatments, arrange the applicable certification, supervision, business registration and required insurance. The rules concern pesticides, not every substance applied for hire.
5. If choosing a New York LLC, file its Articles of Organization for $200; other lawful business structures have different steps.
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?

Commercial pesticide services require the applicable individual certification or supervised-worker arrangement, plus business registration before offering or performing applications for hire. Confirm the category, staff arrangement and required liability insurance with DEC; ordinary tree pruning without pesticides is a different activity.

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. Or see how every state handles tree work in our arborist license requirements by state guide.

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

DEC offers initial reciprocal certification only for eligible residents certified in an agreement state who have not previously held New York certification. State/category and prior-experience conditions differ; use DEC’s current chart. Reciprocity does not replace New York recertification, business registration or local tree-work requirements.

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	Initial reciprocity eligibility, agreement states, category equivalence and state-specific prior-certification or experience conditions
NYSDEC — Reciprocity Application for Pesticide Applicator Certification	The form used in place of the standard certification application