How to Modify Child Custody in Florida — Hernando County Guide
Reviewed by Christopher S. Mulligan, Esq., a Brooksville family law attorney who represents Hernando County parents in custody and time-sharing cases
Florida courts modify a parenting plan only when a parent proves a substantial and material change in circumstances and demonstrates that the modification serves the child’s best interests under Florida Statute § 61.13 (2025).
A Hernando County custody attorney working in the Fifth Judicial Circuit applies this two-part test without exception.
A parent who satisfies only one part of the test cannot obtain a modification — both the change and the child’s best interests must be established before the court will alter an existing parenting plan or time-sharing schedule.
Key Takeaways
- Florida Statute § 61.13 (2025) requires proof of a substantial and material change in circumstances plus a best interests determination before any Hernando County court modifies a parenting plan.
- Florida House Bill 1301, effective July 1, 2023, established a rebuttable presumption that equal time-sharing is in a minor child’s best interests, and removed the requirement that a qualifying change be unanticipated.
- A parent filing in Hernando County uses Florida Supreme Court-approved Family Law Form 12.905(a), filed with the Hernando County Clerk of Circuit Court.
- Emergency modifications are available when a child faces an immediate safety threat — the court can enter a temporary order before the full hearing is scheduled.
Schedule a consultation at 352-593-5990 before filing — the petition locks in the legal theory the court will evaluate.
What Does Florida Law Require to Modify a Parenting Plan
Florida Statute § 61.13 (2025) requires two things: proof of a substantial and material change in circumstances since the last order, and evidence that the proposed modification serves the child’s best interests. Both parts must be satisfied — a parent who meets only one part of the test cannot obtain a modification.
A substantial and material change must be significant and lasting. Since July 1, 2023, a parent no longer has to show the change was unanticipated when the original order was entered. Temporary situations — a short-term job disruption, a minor illness, a brief scheduling conflict — do not meet the threshold.
The Hernando County Circuit Court requires documented evidence of a change that makes the existing parenting plan unworkable or harmful to the child.
Florida Statute § 61.13 (2025), as amended by Florida House Bill 1301, effective July 1, 2023, establishes a rebuttable presumption that equal time-sharing is in a minor child’s best interests.
Parents who need a broader overview of how Florida structures parental responsibility and time-sharing should review the custody law framework before filing a modification petition.
A parent seeking a schedule other than equal time-sharing must present evidence rebutting that presumption at the modification hearing before the Fifth Judicial Circuit.
What Qualifies as a Substantial Change in Circumstances in Florida
A substantial change is one that is significant, lasting, and directly affects the child’s welfare or a parent’s ability to comply with the existing parenting plan under Florida Statute § 61.13 (2025). Changes that commonly support a modification petition include:
- A parent’s relocation of at least 50 miles for 60 or more consecutive days, or a parent moving within 50 miles of the other parent after living farther apart
- A parent’s documented substance abuse or relapse
- A parent’s incarceration
- A new medical or developmental diagnosis requires a different caregiving schedule
- A sustained, documented pattern of parenting plan violations by either parent
- Domestic violence or a protective injunction entered after the original order
- A significant change in either parent’s work schedule that makes the existing plan unworkable
- A child’s change in school district resulting from a parent’s move
Minor scheduling disagreements, temporary financial hardship, and short-lived conflicts do not meet the standard.
The Fifth Judicial Circuit requires evidence of a lasting change — not a snapshot of a difficult period that has since resolved.
Parents facing multiple contested issues across custody and support should consult a family law attorney before filing to ensure the petition addresses every issue in a single proceeding.
How Is a Custody Modification Petition Filed in Hernando County
A parent files Family Law Form 12.905(a) — the Supplemental Petition to Modify Parental Responsibility, Visitation, or Parenting Plan/Time-Sharing Schedule — with the Hernando County Clerk of Circuit Court at 20 N Main St, Brooksville, FL 34601.
Filing in the wrong court triggers a jurisdictional challenge that delays the entire case.
Step 1 — Gather Documentation Before Filing
A parent must compile evidence before submitting the petition — not after. The Hernando County Circuit Court evaluates the petition based on the evidentiary record established from the outset. Relevant documentation includes employment records, medical records, school reports, police reports, communication logs, and declarations from witnesses with direct knowledge of the changed circumstances.
Step 2 — Complete the Required Forms
The required filing package includes:
Form 12.905(a) — Supplemental Petition to Modify
Form 12.902(b) or 12.902(c) — Financial Affidavit (required when child support is at issue)
Form 12.995(a) — Proposed Parenting Plan
Certificate of Service confirming the other parent was served
Additional local forms for the Fifth Circuit are available through the circuit5.org self-help center. Self-represented parties can also access step-by-step filing guidance through the Florida Courts HELP portal, which covers form selection, service requirements, and hearing preparation.
Step 3 — File and Serve the Other Parent
The completed petition is filed with the Hernando County Clerk of Circuit Court. After filing, the petitioning parent must formally serve the other parent in accordance with the Florida Family Law Rules of Procedure. The other parent has 20 days to respond after service.
The Hernando County Circuit Court still requires a hearing before entering a modification order — a nonresponse does not automatically result in a default order. Parents who are also navigating a divorce filing alongside a custody modification can review the Hernando County filing process to understand how the two proceedings interact.
Step 4 — Complete Mediation
The Fifth Judicial Circuit requires both parents to attempt mediation before scheduling a modification hearing. A mediator facilitates negotiation without a judge deciding the outcome.
Parents who want to understand mediation’s role in Hernando County family law proceedings can review the process and how it compares to litigation.
When mediation produces a full agreement, the parents submit it to the Hernando County Circuit Court for approval without a contested hearing. The mediator then reports the outcome to the court, and only unresolved issues move to a hearing.
Step 5 — Present Evidence at the Modification Hearing
The modification hearing is the proceeding at which both parents present evidence and testimony. The Hernando County Circuit Court applies the § 61.13 two-part test and issues a modified parenting plan if the standard is met.
A parent who fails to appear after receiving proper notice risks an adverse ruling based solely on the other parent’s evidence.
Mr. Mulligan prepares custody modification petitions for Hernando County parents from the initial consultation through the hearing, so the evidentiary record supports the petition from the first filing.
Parents who need to act before the other parent files first should not wait. Call 352-593-5990 to retain representation before the petition is submitted.
What Evidence Supports a Custody Modification Petition in Florida
The Hernando County Circuit Court evaluates a modification petition based on the documentary and testimonial record built before the hearing. Strong evidence must directly connect the substantial change to the child’s welfare — not just document that something changed in a parent’s life.
Evidence That Strengthens a Modification Petition
Employment records documenting a job loss, schedule change, or relocation
Medical or psychological records documenting a child’s changed needs
School attendance and performance records showing instability in the child’s current arrangement
Police reports or protective injunction orders entered after the original custody order
Text message or email logs documenting parenting plan violations
Declarations from teachers, counselors, or family members with direct knowledge of the child’s circumstances
Cases involving domestic violence allegations require a separate evidentiary track — police reports, injunction filings, and witness declarations carry more weight when filed alongside the modification petition rather than introduced at the hearing for the first time.
Evidence That Supports a Defense Against Modification
A parent defending against modification should compile evidence showing the current parenting plan is working—consistent time-sharing compliance records, documentation of the child’s stable school and home environment, and records showing the other parent’s history of interfering with court-ordered time-sharing.
How Long Does a Custody Modification Take in Hernando County
An uncontested custody modification in Hernando County generally resolves within 60 to 90 days after filing when mediation is completed promptly, and the paperwork is complete — these are general estimates based on Fifth Judicial Circuit docket conditions, not statutory deadlines.
A contested custody modification proceeding to a hearing before the Fifth Judicial Circuit generally takes 4 to 9 months from filing to final order, depending on the court’s docket and the number of contested issues requiring a hearing.
Cases involving high-conflict dynamics between parents tend to run toward the longer end of that range, especially when multiple motions and discovery disputes precede the final hearing.
When Emergency Modification Is Available
Emergency modifications move faster. A parent who demonstrates an immediate threat to a child’s safety may file a verified motion for emergency relief alongside the modification petition.
The Hernando County Circuit Court can enter a temporary order on an emergency basis under Florida Statute § 61.13, which remains in effect until the full modification hearing is scheduled.
Mr. Mulligan handles emergency custody filings when a child’s immediate well-being requires court action before the standard timeline allows.
Frequently Asked Questions
What is the legal standard to modify child custody in Florida?
Florida Statute § 61.13 (2025) requires proof of a substantial and material change in circumstances since the last order and a showing that the modification serves the child’s best interests. Both parts must be satisfied before the Hernando County Circuit Court modifies an existing parenting plan or time-sharing schedule.
What qualifies as a substantial change in circumstances for custody modification in Florida?
A substantial change under Florida Statute § 61.13 (2025) is significant, lasting, and directly affects the child’s welfare or a parent’s ability to comply with the existing plan. Qualifying examples include a relocation of 50 miles or more, a parent’s incarceration, or a sustained pattern of parenting plan violations.
Does Florida favor equal time-sharing in custody modification cases?
Yes. Florida Statute § 61.13 (2025), amended effective July 1, 2023, establishes a rebuttable presumption that equal time-sharing is in a minor child’s best interests. A parent seeking a schedule other than equal time-sharing must present evidence rebutting this presumption at the modification hearing before the Fifth Judicial Circuit.
How long does a custody modification take in Hernando County?
An uncontested Hernando County modification generally resolves within 60 to 90 days when mediation completes promptly — a general estimate based on docket conditions, not a statutory deadline. A contested modification before the Fifth Judicial Circuit generally takes 4 to 9 months from filing to final order, depending on the number of contested issues. The Hernando County custody overview covers additional procedural details specific to the local court.
Can I file for emergency custody modification in Florida?
Yes. A parent may file a verified motion for emergency relief when a child faces an immediate safety threat. The Hernando County Circuit Court can enter a temporary order on an emergency basis under Florida Statute § 61.13, which remains in effect until the Fifth Judicial Circuit schedules the full modification hearing.
Does a child’s preference matter in a Florida custody modification case?
Florida Statute § 61.13(3) (2025) lists a child’s reasonable preference as one of the best-interest factors the Hernando County Circuit Court considers. A child’s preference is not controlling — the court weighs it alongside all other statutory factors, giving more weight to preferences that reflect genuine maturity rather than a temporary reaction.
What happens if the other parent ignores a custody modification petition in Florida?
A nonresponse after proper service does not automatically result in a default modification order in Florida. The Hernando County Circuit Court still requires a hearing before entering a modification. A parent who fails to appear after proper notice risks an adverse ruling entered based solely on the petitioning parent’s evidence.
What role does mediation play in a Florida custody modification case?
Mediation is a required step in most Hernando County modification cases before the court schedules a hearing. Parents should also understand the cost of mediation in Florida before entering the process. Both parents must attempt mediation, and the mediator reports the outcome to the court before the Fifth Judicial Circuit sets a hearing date.
Can violations of a parenting plan support a modification petition in Florida?
Yes. A sustained, documented pattern of parenting plan violations can qualify as a substantial and material change under Florida Statute § 61.13 (2025). Mr. Mulligan files enforcement motions in the Hernando County Circuit Court and builds violation records into modification petitions filed on a client’s behalf. Document violations that also affect child support obligations together so the court can address both issues in a single proceeding.
What is the difference between modifying and enforcing a parenting plan in Florida?
A modification changes the terms of a current parenting plan under Florida Statute § 61.13 and requires proving a substantial change in circumstances. Enforcement compels compliance with the existing order without changing its terms — a parent who repeatedly violates the schedule faces both enforcement action and potential modification proceedings in Hernando County Circuit Court. Parents whose modification also involves a child support adjustment should raise both issues in the same petition to avoid duplicate filings.
A parenting plan that no longer fits a child’s life does not have to stay in place. Mr. Mulligan has represented Hernando County families in custody modification proceedings since 2007 — call 352-593-5990 or schedule a consultation before the other parent files first.
About the Author
Christopher S. Mulligan
Florida Bar Member in Good Standing since November 9, 2007 (Bar No. 47524) · J.D., The George Washington University Law School, 2006
Christopher S. Mulligan is a third-generation Florida attorney and founder of Mulligan & Associates in Brooksville, Florida. He drafted provisions of the 2005 Violence Against Women Act reauthorization and serves as a Guardian ad Litem and Attorney ad Litem for children in foster care. He has practiced family law in Hernando County since 2007 and represents families in divorce, custody, support, adoption, dependency, and injunction matters throughout the Fifth Judicial Circuit.