Custody Rights for Unmarried Parents in New York

Unmarried parents in New York have custody and visitation rights, but the legal path to establishing and exercising those rights is different from the process married parents face in a divorce. For unmarried fathers in particular, establishing legal paternity is an essential first step — without it, a father has no standing to seek custody or visitation. For same-sex unmarried parents, the legal landscape was reshaped by the New York Court of Appeals’ 2016 decision in Brooke S.B. v. Elizabeth A.C.C., which expanded the definition of who qualifies as a parent.

This article explains how unmarried parents in New York establish parental rights, which courts have jurisdiction, what legal standards apply, and how the law has evolved to address modern family structures.

Establishing Paternity

For an unmarried father in New York, legal rights begin with establishing paternity. Unlike married fathers — who are presumed to be the legal father of children born during the marriage — unmarried fathers must take affirmative steps to establish their legal relationship with their child.

There are two primary methods:

Acknowledgment of Paternity (AOP). Both parents can sign a voluntary Acknowledgment of Paternity at the hospital when the child is born, or at any time afterward at the local registrar’s office or through the court. The AOP is a sworn statement in which the father acknowledges he is the biological parent and the mother confirms that the man signing is the father. Once signed and filed, the AOP has the same legal effect as a court order of paternity.

An AOP can be rescinded within 60 days of signing. After 60 days, it can only be challenged on the basis of fraud, duress, or material mistake of fact, and the standard for overturning it is high.

Court order of filiation. Either parent (or the child through a legal representative) can file a paternity petition in Family Court. The court may order genetic testing (DNA testing), and if the results establish biological parentage, the court enters an order of filiation. This order legally establishes the father-child relationship.

A court order of filiation is often pursued when the father was not present at the birth, when the mother disputes paternity, or when the father wants legal rights but the mother refuses to sign an AOP.

Until paternity is established through one of these methods, an unmarried father has no legal right to custody or visitation and no legal obligation to pay child support.

For a general overview of custody issues for unmarried parents, see our national guide on custody for unmarried parents.

Family Court vs. Supreme Court Jurisdiction

In New York, two courts have authority over custody matters, and which court an unmarried parent uses depends on the circumstances:

Family Court. Unmarried parents typically file custody and visitation petitions in Family Court. Family Court has original jurisdiction over custody, visitation, paternity, child support, and family offenses involving unmarried parents. There is no filing fee for custody and visitation petitions in Family Court, which makes it more accessible for many parents.

Family Court proceedings are generally less formal than Supreme Court proceedings, and Family Court judges have extensive experience with custody and visitation disputes. However, Family Court cannot grant a divorce or divide property.

Supreme Court. If the custody issue arises in the context of a divorce, it is heard in Supreme Court, which has exclusive jurisdiction over matrimonial matters in New York. Since unmarried parents are not getting divorced, they typically do not end up in Supreme Court for custody purposes — unless there is a related proceeding (such as a property dispute or an order of protection) that is already pending there.

In practice, the vast majority of custody disputes between unmarried parents are resolved in Family Court.

No Automatic Preference for Either Parent

New York law does not grant an automatic right of custody to either the mother or the father of a child born outside of marriage. While there was historically an informal presumption favoring mothers — particularly for young children — modern New York case law has moved away from gender-based presumptions.

The controlling standard is the best interest of the child. The court examines a range of factors to determine which custody arrangement best serves the child’s physical, emotional, and developmental needs. These factors include:

• The quality of each parent’s relationship with the child
• Each parent’s ability to provide a stable home environment
• Each parent’s willingness to foster a positive relationship between the child and the other parent
• The child’s existing routine, school, and community ties
• Each parent’s mental and physical health
• Any history of domestic violence, substance abuse, or neglect
• The child’s preference (if the child is old enough and mature enough to express one meaningfully)
• Each parent’s work schedule and availability
• The involvement of extended family and support systems

No single factor is determinative. Courts look at the totality of the circumstances and exercise broad discretion in fashioning a custody arrangement.

For a deeper discussion of how custody decisions are made, see our guide on how child custody is determined.

Types of Custody in New York

New York recognizes two dimensions of custody:

Legal custody refers to the authority to make major decisions about the child’s life, including education, healthcare, and religious upbringing. Legal custody can be sole (one parent decides) or joint (both parents must consult and agree).

Physical custody (also called residential custody) refers to where the child lives on a day-to-day basis. The parent with primary physical custody is the custodial parent, and the other parent typically has a visitation or parenting time schedule.

Courts can award any combination: sole legal and sole physical custody to one parent; joint legal custody with primary physical custody to one parent and visitation to the other; or joint legal and joint physical custody with a roughly equal time-sharing arrangement.

For unmarried parents, the most common arrangement is joint legal custody with primary physical custody to one parent and a structured visitation schedule for the other parent. However, outcomes vary widely based on the facts of each case.

For more on the different types of custody, see our article on types of child custody.

Visitation Rights

The non-custodial parent in New York has a right to reasonable visitation unless the court finds that visitation would be harmful to the child. Courts presume that it is in the child’s best interest to have a relationship with both parents, and visitation will only be denied or restricted in extreme circumstances, such as:

• Documented child abuse or neglect
• Active substance abuse that endangers the child
• A credible threat of parental abduction
• Severe domestic violence

When safety is a concern, the court may order supervised visitation — requiring that a third party or professional supervisor be present during the parent’s time with the child. Supervised visitation is typically a temporary measure, with the goal of transitioning to unsupervised contact as the parent addresses the underlying concerns.

Same-Sex Unmarried Parents and the Brooke S.B. Decision

Before 2016, New York law defined “parent” narrowly for purposes of standing to seek custody or visitation. Under the 1991 Court of Appeals decision in Alison D. v. Virginia M., a person who was not a biological or adoptive parent had no standing to seek visitation, even if they had functioned as the child’s parent for years. This rule disproportionately affected same-sex couples who had children together but were not married and where only one partner had a biological or adoptive legal connection to the child.

In 2016, the Court of Appeals overruled Alison D. in Brooke S.B. v. Elizabeth A.C.C. The court held that a non-biological, non-adoptive partner has standing to seek custody or visitation if they can establish, by clear and convincing evidence, that they and the biological parent agreed to conceive and raise the child together. The key inquiry is whether both parties entered into a pre-conception agreement to bring the child into the world and raise the child as co-parents.

Brooke S.B. did not define exhaustively what evidence suffices, but the court indicated that relevant considerations include:

• Evidence that both partners participated in the decision to conceive the child
• Evidence that both partners planned for the child’s arrival together (attending medical appointments, preparing the home, choosing names)
• Evidence that both partners shared parenting responsibilities after the child’s birth
• Communications (texts, emails, social media posts) reflecting a shared understanding of co-parenthood

The decision applies equally to same-sex and opposite-sex unmarried couples. It recognized that the narrow biological-or-adoptive-only definition of parentage failed to protect children who had formed parent-child bonds with non-biological caregivers.

For unmarried same-sex parents in New York, the practical impact of Brooke S.B. is significant. A non-biological parent who can demonstrate a pre-conception agreement to co-parent now has standing to seek custody or visitation. However, standing is only the threshold — the court still applies the best interest of the child standard when determining the actual custody and visitation arrangement.

What to Do Next

If you are an unmarried parent in New York seeking to establish or protect your custody rights, take these steps:

1. Establish paternity if you are an unmarried father. Sign an Acknowledgment of Paternity or file a paternity petition in Family Court. Without legal paternity, you cannot seek custody or visitation.
2. Document your involvement. Keep records of your relationship with your child — school events attended, medical appointments, daily caregiving activities, and financial support provided. This evidence is important in any custody proceeding.
3. File a custody petition promptly. If there is a dispute about custody or visitation, do not wait. File a petition in Family Court to get your rights established by a court order. Informal arrangements are not enforceable.
4. Preserve evidence of co-parenting agreements. If you are a non-biological parent relying on Brooke S.B. standing, gather all evidence of the pre-conception agreement and your ongoing parenting role — texts, emails, photos, financial records, and statements from third parties who can attest to your co-parenting relationship.
5. Consult a New York family law attorney. Custody disputes between unmarried parents involve unique legal issues that differ from divorce custody cases. Schedule a free consultation to understand your rights and options under current New York law.

For more on custody rights generally, see our guide on child custody laws explained. For information on New York grandparent visitation rights, see our article on grandparent visitation in New York.

Frequently Asked Questions

How does an unmarried father establish paternity in New York?

There are two primary methods. Both parents can sign a voluntary Acknowledgment of Paternity (AOP) at the hospital or at any time afterward — once signed and filed, the AOP has the same legal effect as a court order. Alternatively, either parent can file a paternity petition in Family Court, where the court may order DNA testing and, if confirmed, enter an order of filiation. An AOP can be rescinded within 60 days; after that, it can only be challenged on the basis of fraud, duress, or material mistake of fact. Until paternity is established, an unmarried father has no legal right to custody or visitation.

Where do unmarried parents file custody petitions in New York?

Unmarried parents typically file custody and visitation petitions in Family Court, which has original jurisdiction over these matters. There is no filing fee for custody and visitation petitions in Family Court, making it more accessible. Supreme Court has jurisdiction over custody only in the context of a divorce or related proceeding. Since unmarried parents are not getting divorced, the vast majority of their custody disputes are resolved in Family Court.

How did the Brooke S.B. decision change custody rights for non-biological parents in New York?

The 2016 Court of Appeals decision in Brooke S.B. v. Elizabeth A.C.C. overruled the restrictive Alison D. standard and held that a non-biological, non-adoptive partner has standing to seek custody or visitation if they can establish, by clear and convincing evidence, that they and the biological parent agreed to conceive and raise the child together. Relevant evidence includes participation in the decision to conceive, planning for the child’s arrival, sharing parenting responsibilities after birth, and communications reflecting a shared understanding of co-parenthood. This applies equally to same-sex and opposite-sex unmarried couples.

Does New York give automatic preference to the mother of a child born outside of marriage?

No. While there was historically an informal presumption favoring mothers, modern New York case law has moved away from gender-based presumptions. The controlling standard is the best interest of the child, and the court examines factors including the quality of each parent’s relationship with the child, each parent’s ability to provide a stable home, willingness to foster the other parent’s relationship, the child’s existing routine, and any history of domestic violence or substance abuse.

How This Guide Was Researched

This guide was created by reviewing publicly available legal information from official state statutes, judiciary websites, court resources, and family law publications. The goal is to explain family law topics in plain English so readers can better understand the process before speaking with an attorney.

Sources and Legal References

This guide is based on publicly available legal information and official sources, including:

• New York state statutes and family law codes
• New York judicial branch website and court resources
• Official New York court forms and filing instructions
• New York custody and parenting time guidelines
• State bar association and legal aid resources

Official New York Resources

• NY CourtHelp – Divorce
• NY CourtHelp – Families & Children
• New York Courts – Divorce Resources

For more about how we research our guides, see our editorial policy and sources methodology.

Related Guides

Learn more about related family law topics:

• How to get full custody
• Creating a parenting plan
• Divorce checklist
• Fathers’ rights in custody
• Divorce laws by state
• Child custody laws explained
• Modifying a custody order

Last updated: March 2026. This guide summarizes general legal information based on publicly available sources and is provided for educational purposes only. It does not constitute legal advice. For advice specific to your situation, consult a licensed attorney in your state.