Interstate Joint Custody Becomes Unworkable at School Age: Change in Circumstances, Sole Custody, and Recalibrated Long-Distance Parenting Time

1. Introduction

Matter of Zielazny v Martorano (2026 NY Slip Op 01974 [App Div, 2d Dept Apr. 1, 2026]) arises from a Family Court Act article 6 custody modification dispute between unmarried parents of one child. After the mother and child moved to Florida in 2019 and the father remained in New York, the parties entered a so-ordered stipulation (Sept. 26, 2019) providing for joint legal and residential custody with a two-week-on/two-week-off physical exchange.

As the child reached school age—and against the backdrop of serious co-parenting conflict—the father petitioned for sole legal and residential custody, alleging interference with his parenting time; the mother cross-petitioned for sole legal and residential custody, alleging the father could not co-parent or adequately care for the child. After a hearing, the Family Court awarded the mother sole legal and residential custody and established a detailed long-distance parenting schedule for the father. The father appealed.

The central appellate issues were: (1) whether the record established a change in circumstances warranting modification; (2) whether awarding the mother sole custody had a sound and substantial basis; (3) how allegations of parental alienation should affect the custody calculus; and (4) whether the parenting-time schedule required adjustment to serve the child’s best interests.

2. Summary of the Opinion

The Second Department held that the Family Court properly found a change in circumstances where: the parents lived in different states; the child was at an age requiring school enrollment; and the parents could not communicate or cooperate sufficiently to continue shared custody. The appellate court further held the award of sole legal and residential custody to the mother was supported by a sound and substantial basis, emphasizing the mother’s day-to-day involvement and primary caregiving role and the parents’ inability to engage in joint decision-making.

On the father’s parental alienation argument, the court acknowledged the mother’s past conduct “did verge on parental alienation,” reiterating that alienation is inconsistent with a child’s best interests, but concluded it did not rise to a level requiring a custody change on this record.

However, the Second Department modified the parental access schedule “on the facts,” entering a more specific, long-distance framework (summer, monthly Florida weekends, holidays, Christmas break, daily FaceTime window, and limited make-up time added to summer access).

3. Analysis

A. Precedents Cited

  • Matter of LaPera v Restivo, 202 AD3d 788, 789; Matter of Gottfried v Gottfried, 163 AD3d 966, 966
    Role in this case: These authorities supply the foundational modification rule: a prior custody order may be changed only upon a showing of a change in circumstances such that modification is required to protect the child’s best interests. The court used them to frame the threshold inquiry before reaching best interests.
  • Friederwitzer v Friederwitzer, 55 NY2d 89, 94; Matter of Cardozo v Defreitas, 87 AD3d 1138, 1138
    Role in this case: These cases anchor the “best interests of the child” standard as the “essential consideration.” The court invoked them to justify a holistic evaluation rather than a parent-centered entitlement approach.
  • Matter of Gagos v Delsalto, 213 AD3d 761, 761; Matter of Jonas v Leppert, 75 AD3d 552, 553
    Role in this case: These decisions provide the commonly applied best-interests factors (fitness, home environment, guidance, ability to meet emotional/intellectual needs, etc.). The opinion cites them to show that the Family Court’s determination fit within an established analytical framework.
  • Matter of Ciardullo v Smith, 236 AD3d 650, 650-651; Cuccurullo v Cuccurullo, 21 AD3d 983, 984
    Role in this case: These cases support appellate deference to hearing courts on credibility and factual assessments. The Second Department relied on this doctrine to uphold the custody determination absent a lack of “sound and substantial basis.”
  • Matter of Gold v Khalifa, 223 AD3d 803, 805; Matter of Klotz v O'Connor, 124 AD3d 662, 662-663
    Role in this case: These cases specifically support finding a change in circumstances where shared custody becomes impracticable due to distance and/or the child’s schooling needs, compounded by parental conflict. They were the principal citations validating modification in an interstate, school-age scenario.
  • Matter of Vizueta v Wiley, 226 AD3d 797, 799; Matter of Gayle v Muir, 211 AD3d 942, 944; Matter of Llanos v Barrezuetta, 232 AD3d 606, 608
    Role in this case: These cases reinforce that sole custody may be appropriate where parents cannot communicate for joint decisions and where one parent has functioned as the primary caregiver more closely meeting the child’s day-to-day needs.
  • Matter of Shepherd v Mirukaj, 235 AD3d 769, 771; Matter of Burke v Squires, 202 AD3d 784, 785-786
    Role in this case: These authorities establish the principle that a parent’s alienation of a child from the other parent is inconsistent with the child’s best interests. The court used them to underscore the seriousness of alienating conduct while still treating it as fact-dependent in remedy.
  • Matter of Doroski v Ashton, 99 AD3d 902, 903; Bobinski v Bobinski, 9 AD3d 441, 441
    Role in this case: These cases recognize that parental alienation can itself constitute a change in circumstances warranting modification. The court cited them to clarify that alienation can be dispositive in some records—then distinguished this case by concluding the evidence did not require a custody reversal.
  • Matter of Samake v Sy, ___ AD3d ___, 2025 NY Slip Op 07387, *2
    Role in this case: Cited for the “paramount concern” principle in parenting time—best interests under the totality. The Second Department relied on it to justify altering the access schedule “on the facts,” even while affirming the custody award.

B. Legal Reasoning

  1. Step 1: Threshold—Change in circumstances.
    The court found change in circumstances based on three interlocking facts: (a) the parents lived in different states (Florida/New York); (b) the child had reached the age requiring school enrollment, making biweekly interstate exchanges unrealistic; and (c) the parents were unable to communicate and cooperate, undermining joint custody’s basic premise. This is a practical, functionality-based change: the original arrangement no longer fits the child’s developmental and educational reality.
  2. Step 2: Best interests—Sole custody to one parent.
    The court affirmed sole legal and residential custody for the mother because the record supported findings that: the parents’ relationship deteriorated to the point joint decision-making was not feasible; the mother was more involved in the child’s daily needs; and the mother had been the primary caregiver. The opinion’s structure reflects a common custody logic: when joint legal custody is unworkable due to persistent conflict, a single decision-maker is often required to ensure stability.
  3. Step 3: Parental alienation—serious but not automatically dispositive.
    The court took pains to “be clear” that alienation is inconsistent with best interests and may warrant modification. Yet it also drew a line between concerning behavior (“verge on parental alienation”) and alienation of such degree that it compels a custody transfer. On this record, alienation concerns were addressed without overturning custody—implicitly by tailoring parenting time and emphasizing continuing contact.
  4. Step 4: Parenting time—affirm custody, but recalibrate access.
    Even while deferring to the hearing court on custody, the Second Department exercised its fact-review power to adjust the detailed long-distance schedule:
    • Summer: seven consecutive weeks commencing the Saturday of Father’s Day weekend, with father pickup in Florida and mother pickup in New York seven weeks later.
    • Monthly Florida weekends: father selects the weekend with at least one month’s notice; Friday school pickup through Sunday 5:00 p.m.; father must ensure attendance at pre-scheduled extracurricular activities.
    • Holidays: Thanksgiving annually (Saturday-to-Saturday) with Florida pickup/New York return; Easter Sunday every year to mother; Christmas Day alternates (mother even years; father odd years).
    • Christmas break: father gets December 26 to day before school resumes in even years; in odd years, from last day of school starting break to day before school resumes; father begins with Florida pickup and ends with New York pickup by mother.
    • FaceTime: daily window 4:00–7:00 p.m. based on schedule; non-access parent initiates.
    • Make-up time: if father cannot exercise scheduled access, up to one week may be added to summer time in New York.
    The modifications reflect an emphasis on predictability (fixed seasonal blocks), educational continuity (school-based exchanges), and preserving the father-child relationship despite geographic distance.

C. Impact

  • Interstate joint custody and school age: The decision strengthens (and operationalizes) a recurring principle: when a child reaches mandatory schooling age, an interstate rotation that previously “worked” may become inherently incompatible with stability—supporting a change in circumstances.
  • Conflict as a joint-custody disqualifier: The opinion underscores that joint legal custody depends on functional communication. Persistent inability to cooperate can justify shifting to sole legal custody to avoid paralysis in decision-making.
  • Alienation as a calibrated factor: By acknowledging conduct “verging” on alienation yet affirming custody, the court signals that alienation allegations must be assessed by degree and effect. Alienation remains a potentially decisive factor, but not a per se custody-switch rule.
  • Appellate willingness to refine parenting schedules: The detailed schedule revisions demonstrate that even when custody is affirmed, parenting time remains highly adjustable on appeal to better fit long-distance realities, protect extracurricular commitments, and reduce future friction through clearer logistics.

4. Complex Concepts Simplified

So-ordered stipulation
An agreement between the parties that the court “so orders,” turning it into an enforceable court order.
Legal custody vs. residential custody
Legal custody concerns decision-making authority (education, health care, religion). Residential (physical) custody concerns where the child primarily lives.
Parental access
New York’s term commonly used for parenting time/visitation—time the noncustodial (or other) parent spends with the child.
Change in circumstances
A significant development since the prior order making the existing arrangement no longer appropriate—required before the court re-examines best interests in a modification case.
Best interests of the child
The controlling standard in custody/access determinations, based on the totality of circumstances affecting the child’s welfare and stability.
Sound and substantial basis in the record
The appellate standard of review: the order stands if supported by credible evidence and reasonable factual findings.
Parental alienation
Conduct by one parent that undermines or damages the child’s relationship with the other parent; courts treat it as contrary to a child’s welfare and potentially grounds to modify custody.

5. Conclusion

Matter of Zielazny v Martorano reinforces that interstate joint custody can become untenable as a child reaches school age—particularly where co-parent communication has broken down—supporting a finding of changed circumstances and an award of sole legal and residential custody to the primary caregiver. At the same time, the decision illustrates a measured approach to parental alienation allegations: the court condemns alienating conduct and recognizes its power to drive modification, yet requires a record showing sufficient severity and impact before it displaces an otherwise supported custody determination. Finally, the opinion highlights the appellate court’s practical role in crafting workable long-distance parenting schedules, emphasizing clarity, continuity, and enforceability to protect the child’s stability and preserve meaningful parent-child relationships across state lines.