When a loved one on Long Island can no longer manage their own finances or personal care — or when a child needs someone legally empowered to act for them — Nassau County families turn to guardianship. But “guardianship” is not one process. In New York it splits into distinct tracks governed by different statutes and, critically, heard in different Nassau County courts. Filing in the wrong court is the single most common and costly mistake families make. This guide explains which track applies, where each is heard in Nassau County, what the law requires, and the alternatives a court will expect you to consider first.
Morgan Legal Group, led by attorney Russel Morgan, Esq., represents petitioners, families, and alleged incapacitated persons throughout Long Island. If you want a tailored answer for your situation, you can schedule a consultation.
The Three Guardianship Tracks — and the Right Nassau Court for Each
This is the rule that matters most. Each track has its own statute and its own courthouse in Nassau County.
| Who needs a guardian | Governing law | Nassau County court |
|---|---|---|
| An adult who has become incapacitated (illness, dementia, stroke, brain injury) | Mental Hygiene Law (MHL) Article 81 | Supreme Court, Nassau County |
| A minor’s person or property (a child under 18) | SCPA Article 17 | Nassau County Surrogate’s Court |
| A developmentally or intellectually disabled person (often a child approaching 18) | SCPA Article 17-A | Nassau County Surrogate’s Court |
The distinction is not a technicality. An adult Article 81 guardianship for an incapacitated Long Islander is commenced in the Supreme Court of Nassau County — never the Surrogate’s Court. Conversely, guardianship of a minor or of a developmentally disabled person belongs in the Surrogate’s Court. Getting this wrong means a rejected or dismissed petition and lost time when a family member is at risk.
For a broader orientation across all tracks, see our Guardianship Overview.
Article 81: Adult Guardianship in Nassau County Supreme Court
Article 81 of the Mental Hygiene Law is the framework most Nassau families encounter — for an aging parent in Garden City, a spouse recovering from a stroke in Hicksville, or an adult child with a disabling condition in Long Beach. The proceeding is filed in Supreme Court, Nassau County, in the county where the alleged incapacitated person (the “AIP”) resides.
The Incapacity Standard
The court does not appoint a guardian simply because someone is old, ill, or making choices their family dislikes. The petitioner must prove, by clear and convincing evidence, that the person:
- cannot manage their property and/or personal needs, and
- is likely to suffer harm because they cannot adequately appreciate the nature and consequences of that inability.
This is a deliberately demanding standard. Article 81 is designed to protect autonomy, not override it.
How the Case Moves Through the Court
The process is more protective of the AIP than many families expect:
- Commencement. The case begins with an Order to Show Cause and a Verified Petition filed in Nassau County Supreme Court.
- Court Evaluator. The court appoints a neutral Court Evaluator to investigate and report on the AIP’s actual condition, wishes, and needs. The court often also appoints counsel for the AIP.
- Rights of the AIP. The AIP has the right to be present and to a hearing, and to contest the petition.
- Tailored powers. If guardianship is granted, the judge awards only the least restrictive powers necessary — a guardian of the person (personal needs), of the property (financial management), or both, scoped to what the AIP genuinely cannot do for themselves.
For a deeper walkthrough, see our Article 81 Guardianship page. When relatives disagree about who should serve or whether guardianship is needed at all, our Contested Guardianship page explains how those fights unfold in Nassau Supreme Court.
Ongoing Duties of a Nassau County Guardian
Appointment is a beginning, not an end. An Article 81 guardian must:
- File an initial report within 90 days of appointment;
- File annual reports to the court thereafter;
- Visit the incapacitated person at least four times per year; and
- Act as a fiduciary in the person’s best interest for the duration of the guardianship, which generally lasts for the person’s life unless the court terminates it.
Our Guardian Duties page details record-keeping, bonding, and accounting obligations so newly appointed guardians on Long Island avoid surcharge or removal.
Minors and SCPA Article 17 in Nassau County Surrogate’s Court
When the person who needs protection is a child under 18, the path runs through SCPA Article 17 in the Nassau County Surrogate’s Court — not the Supreme Court. This arises when a child inherits money or receives a settlement, when parents are deceased or unavailable, or when a relative in a Long Island community such as Levittown or Massapequa steps in to raise a grandchild.
The Surrogate’s Court can appoint a guardian of the person (custody and care), a guardian of the property (managing the child’s funds, often under court supervision until age 18), or both. Guardianship of a minor’s property generally ends when the minor reaches majority. See Guardianship of Minors for the petition requirements and how the court protects a child’s assets.
SCPA Article 17-A: Developmental Disability
A separate Surrogate’s Court track, SCPA Article 17-A, addresses guardianship for a person with an intellectual or developmental disability. This is the route many Nassau families take as a child with such a condition approaches the age of 18, when parents would otherwise lose legal authority to make medical, residential, and financial decisions.
Article 17-A is a more plenary (broad, all-or-nothing) standard than Article 81’s tailored approach, which is one reason courts and counsel increasingly weigh whether a less restrictive Article 81 guardianship or a non-guardianship alternative better fits the individual. Like minor guardianship, 17-A petitions are filed in the Nassau County Surrogate’s Court.
Alternatives Long Island Courts Expect You to Consider First
New York courts — and Nassau County judges in particular — prefer the least restrictive option. Before granting guardianship, a court will want to know why these tools are not sufficient:
- Durable Power of Attorney — Under General Obligations Law (GOL) § 5-1513, a competent adult can appoint an agent to manage finances, avoiding the need for a property guardian entirely.
- Health Care Proxy — Appoints someone to make medical decisions if the person cannot.
- Living Trust — Allows a trustee to manage assets without court supervision.
- Supplemental (Special) Needs Trust — Preserves means-tested benefits for a disabled beneficiary while providing for supplemental needs.
- Supported Decision-Making — Lets a person keep legal authority while receiving help from trusted advisors.
The catch: most of these require capacity to execute. They work best as proactive planning — which is why families in Nassau County are wise to put documents in place before a crisis. Our Alternatives to Guardianship page compares each tool. If capacity is already lost, Article 81 in Nassau Supreme Court may be the only remaining route.
Why the Court Distinction Matters on Long Island
A Nassau County family caring for an aging parent in Rockville Centre and a Nassau family planning for a disabled child turning 18 in Freeport face entirely different filings — one in Supreme Court under Article 81, one in Surrogate’s Court under Article 17-A. The facts, the standards of proof, the supporting professionals, and the courthouse all differ. Matching the situation to the correct statute and court at the outset is the difference between a smooth appointment and months of delay.
Frequently Asked Questions
Is adult guardianship in Nassau County filed in Surrogate’s Court?
No. Adult guardianship of an incapacitated person under Article 81 of the Mental Hygiene Law is filed in the Supreme Court, Nassau County — the county where the alleged incapacitated person resides. Only guardianship of a minor (SCPA Article 17) or of a developmentally disabled person (SCPA Article 17-A) goes to the Nassau County Surrogate’s Court.
What must I prove to obtain an Article 81 guardianship?
You must show by clear and convincing evidence that the person cannot manage their property and/or personal needs and is likely to suffer harm because they cannot adequately appreciate the consequences of that inability. The court appoints a Court Evaluator to investigate, and the alleged incapacitated person has the right to be present and to a hearing.
How long does a Nassau County guardianship last?
An Article 81 guardianship generally lasts for the incapacitated person’s life unless the court terminates it earlier. Guardianship of a minor’s property under Article 17 typically ends when the minor turns 18.
Can guardianship be avoided?
Often, yes — if planning is done while the person still has capacity. A durable Power of Attorney (GOL § 5-1513), Health Care Proxy, living trust, special needs trust, or supported decision-making can make a guardianship unnecessary. Courts strongly favor these less restrictive options.
What are my ongoing duties if I’m appointed?
A Nassau County guardian must file an initial report within 90 days, file annual reports, visit the person at least four times per year, and act strictly as a fiduciary in the person’s best interest.
Speak With a Long Island Guardianship Attorney
Whether your situation calls for Article 81 in Nassau Supreme Court or an Article 17/17-A petition in the Surrogate’s Court — or whether an alternative would serve your family better — getting the track right from the start protects your loved one and your time. Attorney Russel Morgan, Esq. and the team at Morgan Legal Group guide Long Island families through every option.
Schedule a consultation with Russel Morgan, Esq.
Further reading from Morgan Legal Group: understanding New York guardianship.