Mercer County Grandparent & Non-Parent Custody Attorneys
Reviewed by Stephanie Green · Managing Partner & Co-Founder · Last updated June 11, 2026
Mercer County, Ohio · Celina · Probate/Juvenile Division
When a grandparent or relative is raising a child, Mercer County offers a few tools depending on how much authority is needed. Quick delegations handle school and medical needs; formal legal custody to a non-parent is decided by the Juvenile Court (Suite 307).
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How can a grandparent or relative get custody in Mercer County, Ohio?
For quick authority over school and medical needs, use a Grandparent Power of Attorney (R.C. 3109.52) or, when a parent is unavailable to sign, a Caretaker Authorization Affidavit (R.C. 3109.65) — both forms come from the Juvenile Court. These are not custody orders and a parent can revoke a POA. For lasting authority, a relative or other suitable adult can file for legal custody in the Juvenile Court (R.C. 2151.23, 2151.353): file a complaint with supporting affidavits, a Parenting Proceeding Affidavit, and the $200 deposit; service is required. The court applies a best-interest analysis and, where the child is not abused/neglected/dependent, considers parental suitability. A GAL may be appointed ($1,000 deposit).
Grandparent and non-parent custody in Mercer County
When a grandparent or relative is raising a child, Mercer County offers tools that range from quick to permanent: a Grandparent Power of Attorney (R.C. 3109.52) or, when a parent can't sign, a Caretaker Authorization Affidavit (R.C. 3109.65) for school and medical authority, or full legal custody decided by the Juvenile Court in Suite 307 (R.C. 2151.23, 2151.353). Gavvl Law matches the tool to how much authority you actually need, files the $200 legal-custody case when lasting authority is required, and works for one flat fee agreed up front, with payment plans available.
- The right tool for how much authority you need. A Power of Attorney or Caretaker Affidavit is fast and covers school and medical needs, but a parent can revoke a POA — only legal custody is a durable court order. We explain the trade-offs and prepare whichever fits, so you aren't over- or under-filing.
- The Juvenile legal-custody case, filed complete. Formal legal custody to a non-parent takes a complaint with supporting affidavits, a Parenting Proceeding Affidavit, and the $200 deposit, with service on the parents required. We assemble the full filing so the Juvenile Court in Suite 307 opens the case the first time.
- Best-interest and suitability, made concrete. Where the child isn't abused, neglected, or dependent, the court weighs parental suitability along with the child's best interest, and it can appoint a Guardian ad Litem on a $1,000 deposit. We build the evidence for that analysis and prepare you for a GAL investigation.
In an abuse, neglect, or dependency case brought by Mercer County DJFS, the court can place a child in a relative's legal custody as part of the disposition — a different path we can help you navigate if that is how your family's case arises. Our flat fee is agreed before we begin and payable on a plan, with full representation if a parent contests the custody request.
Flat-fee options
Flat-fee limited scope: we draft and file the grandparent companionship/visitation motion or a non-parent custody complaint. You appear at any hearing.
- Grandparent companionship / visitation motion: $950
- Non-parent custody complaint: $1,250
Prefer full representation? An Ohio attorney can carry the entire case on a $3,500 retainer.
Split any flat fee with Gavvl Direct — our in-house plan at 19% APR, $500 minimum — on a 60%-down schedule of 18 weekly, 8 bi-weekly, or 4 monthly payments, or full financing where work begins once 60% is paid. Affirm, Klarna, and PayPal Pay Later are also available through LawPay.
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Ohio Custody by the Numbers
- Best interest The single standard that governs every Ohio custody decision Source: Ohio Revised Code § 3109.04
- No set age There is no age a child can choose a parent — the judge weighs a mature child's wishes Source: Ohio Revised Code § 3109.04(B)
- Change in circumstances Required, plus a best-interest finding, before the residential parent can be changed Source: Ohio Revised Code § 3109.04(E)(1)
- Shared parenting Either parent may ask the court for a joint parenting plan Source: Ohio Revised Code § 3109.04(G)
Compare Types of Custody in Ohio
| Custody type | Who makes major decisions | Where the child lives | Best when |
|---|---|---|---|
| Shared parenting | Both parents jointly, under a written plan | Time is split per the plan (not always 50/50) | Parents can communicate and cooperate on decisions |
| Sole legal & residential | One parent | Primarily with that parent | One parent is unable or unwilling to co-parent |
| Split custody | Each parent for the child in their care | Siblings are divided between the two homes | Rare — only when it serves each child's best interest |
| Legal custody to a non-parent | The relative or caregiver granted custody | With the non-parent caregiver | Neither parent can safely care for the child |
Where to File: Mercer County Court of Common Pleas — General Division (Clerk of Courts, Legal Division)
101 N Main St, Room 205, PO Box 28, Celina, OH 45822Phone: (419) 586-6461
Hours: Monday 8:30 AM–5:00 PM; Tuesday–Friday 8:30 AM–4:00 PM
Website: Court website
Juvenile Branch (Never-Married Parents)
Mercer County Court of Common Pleas — Probate/Juvenile Division
101 N Main St, Suite 307, Celina, OH 45822
Phone: (419) 586-1249
Hours: Monday 8:30 AM–5:00 PM; Tuesday–Friday 8:30 AM–4:00 PM
Grandparent & Non-Parent Custody is the right path if…
This is the right path in Mercer County if…
- You're a grandparent or relative raising a child and need legal authority for their care.
- You need quick school/medical authority (POA or Caretaker Affidavit) or lasting authority (legal custody).
- You're willing to file in the Juvenile Court (Suite 307) for formal legal custody.
- You can show that non-parent custody serves the child's best interest.
- You understand a POA can be revoked by a parent, while legal custody is a court order.
Filing Fees
Grandparent POA / Caretaker Authorization Affidavit: forms from the Juvenile Court (confirm any recording cost) · Legal custody to a non-parent: $200 deposit + $25 stenographer's fee · GAL deposit $1,000 if appointed. Confirm amounts with the Juvenile Court at 419-586-1249.
Forms & Filing Packets
Quick authority — POA or Caretaker Affidavit — Recorded/filed with the Juvenile Court (confirm any cost)
- Mercer County Juvenile Court Forms — The Probate/Juvenile Division's own forms for never-married parents: Complaint for Parentage / Allocation of Parental Rights (Custody) / Parenting Time, parenting plans, motions to change custody or parenting time, motions for contempt with Show Cause Order, financial and health-insurance affidavits, the IV-D application, and the Grandparent Power of Attorney / Caretaker Authorization Affidavit.
Legal custody to a non-parent (full case) — $200 deposit · GAL $1,000 if appointed
- Parenting Proceeding Affidavit (UCCJEA · R.C. 3127.23) — Lists where each child has lived for the last 5 years and with whom, confirming Ohio's jurisdiction over custody under the UCCJEA. Required in any case involving minor children.
- Mercer County Juvenile Court Forms — The Probate/Juvenile Division's own forms for never-married parents: Complaint for Parentage / Allocation of Parental Rights (Custody) / Parenting Time, parenting plans, motions to change custody or parenting time, motions for contempt with Show Cause Order, financial and health-insurance affidavits, the IV-D application, and the Grandparent Power of Attorney / Caretaker Authorization Affidavit.
- Mercer County Juvenile Division Rules of Court (eff. 2026) — The Juvenile Division's local rules and Appendix A deposit schedule, including custody/parentage filing (Rule 6.04), modification (Rule 6.04(D)), contempt (Rule 6.05), relocation (Rule 6.06), and the Local Rule 7 parenting-time guidelines (Appendix B).
How to File Grandparent & Non-Parent Custody in Mercer County
- Choose the right tool. For short-term school and medical authority, use a Grandparent Power of Attorney (R.C. 3109.52) or, when a parent is unavailable to sign, a Caretaker Authorization Affidavit (R.C. 3109.65). For lasting authority, file for legal custody.
- Get the forms from the Juvenile Court. The Mercer County Juvenile Court provides the POA and Caretaker Authorization Affidavit forms. These are filed/recorded but are not the same as a custody order.
- File for legal custody if needed. A relative or suitable adult files a complaint/motion in the Juvenile Court (Suite 307) with supporting affidavits, a Parenting Proceeding Affidavit, and the $200 deposit. Service on the parents is required.
- Attend the best-interest hearing. The court applies a best-interest analysis and, where the child is not abused/neglected/dependent, considers parental suitability. A GAL ($1,000 deposit) may be appointed to investigate and recommend.
Mercer County Practice Notes
- POA and Caretaker Affidavit are not custody orders. A Grandparent Power of Attorney (R.C. 3109.52) or Caretaker Authorization Affidavit (R.C. 3109.65) grants school and medical authority but is not a custody order — a parent can revoke a POA. For lasting authority, file for legal custody in the Juvenile Court.
- Non-parent custody is a Juvenile Court matter. Formal legal custody to a relative or other suitable adult is decided by the Mercer County Juvenile Court (R.C. 2151.23, 2151.353). In abuse/neglect/dependency cases brought by DJFS, the court can place a child in a relative's legal custody as part of the disposition.
- Unmarried mother is sole custodian until a court order. Until the Juvenile Court orders otherwise, an unmarried mother is the sole residential parent and legal custodian (R.C. 3109.042). A father establishes his rights by first establishing parentage and then asking the court to allocate parental rights and parenting time.
Frequently Asked Questions
- I'm raising my grandchild in Mercer County — what can I do quickly?
- For school and medical authority, use a Grandparent Power of Attorney (R.C. 3109.52) or, when a parent is unavailable to sign, a Caretaker Authorization Affidavit (R.C. 3109.65) — both forms are available from the Juvenile Court. These are not the same as a custody order; a parent can revoke a POA. For lasting authority, file for legal custody.
- Where do non-parents file for custody in Mercer County?
- In the Mercer County Juvenile Court (Suite 307). A relative or other suitable adult can ask for legal custody of a child (R.C. 2151.23, 2151.353); file a complaint with supporting affidavits, a Parenting Proceeding Affidavit, and the $200 deposit. A GAL may be appointed ($1,000 deposit, except in abuse/neglect/dependency cases).
- We were never married — where do I file for custody in Mercer County?
- In the combined Probate/Juvenile Division (Judge Matthew L. Gilmore) on the 3rd floor, Suite 307, 419-586-1249. Parentage, custody, parenting time, and support for never-married parents are Juvenile Court matters, not divorce-court matters.
- When does Mercer County appoint a Guardian ad Litem, and what does it cost?
- In a contested custody or parenting-time case, either court can appoint a GAL to investigate and recommend what is in the child's best interest. The GAL deposit is $1,000 in both courts (no deposit in Juvenile abuse/neglect/dependency or delinquency cases). A court-appointed Juvenile GAL may bill no more than $100/hour. GAL fees are typically allocated between the parties.
Free Local Resources in Mercer County
- Mercer County Clerk of Courts — Legal Division (divorce, dissolution, legal separation, annulment, CPO). Clerk Calvin Freeman, 101 N. Main St., Room 205, PO Box 28, Celina, OH 45822; (419) 586-6461; fax (419) 586-5826; clerk@mercercountycourts.com. Files all Domestic Relations and civil cases and confirms current deposits (divorce, dissolution, and post-decree motions are each a $350 deposit eff. 4/1/2024). No personal checks — cash, money order, or cashier's check, or pay online via LexisNexis. Court staff cannot give legal advice. Confirm the current amount and any e-filing registration (Common Pleas Loc.R. 29) with the Clerk before filing.
- Mercer County Court of Common Pleas — General Division (hears all Domestic Relations cases). Judge Matthew K. Fox, Magistrate Richard M. Delzeith, 101 N. Main St., Room 301, Celina, OH 45822; (419) 586-2122; cpc@mercercountycourts.com. Decides divorce, dissolution, legal separation, annulment, DR post-decree, and domestic-violence civil protection orders. There is no separate Domestic Relations court.
- Mercer County Probate/Juvenile Division (never-married parents, non-parent custody). Judge Matthew L. Gilmore, Suite 307 (3rd floor), 101 N. Main St., Celina, OH 45822; juvenile line (419) 586-1249 or (419) 586-2418; fax (419) 586-4506; https://mercercountycourts.com/index.php. Handles parentage, custody, parenting time, and support for never-married parents, plus grandparent and other non-parent custody. New custody/support/visitation/paternity cases carry a $200 deposit (plus a $25 stenographer's fee); confirm current amounts with the court.
- Mercer County Child Support Enforcement Agency (CSEA). 220 W. Livingston St., Room B181, PO Box 649, Celina, OH 45822-0649; (419) 586-7961; toll-free 800-207-3597; fax (419) 586-2151; hours M–F 8:30 AM–4:00 PM. Opens IV-D child-support cases, establishes paternity administratively, runs wage withholding, distributes payments, and enforces orders.
- A-OK Parenting Program (required for divorce/dissolution with minor children). Mercer County requires each parent in a divorce or dissolution with minor children to attend the A-OK Parenting Program before the final hearing (Common Pleas Loc.R. 21.02). Cost is a one-time $30 per person, paid at the class; you are registered automatically when you file, and the court mails your assigned date. The program runs 6:00–9:00 PM on the 4th Tuesday of January, March, May, July, September, and November in Room 303 of the courthouse. Juvenile (never-married) cases are generally not ordered into A-OK. Call (419) 586-2122 to reschedule.
- Ohio Legal Help & legal aid. Ohio Legal Help (https://www.ohiolegalhelp.org/) has plain-English guides and the Ohio Supreme Court standardized forms for divorce, custody, support, and protection orders. Legal Aid of Western Ohio (LAWO) serves Mercer County for income-eligible residents — confirm the current intake line.
Other Family-Law Topics in Mercer County
- Ohio Divorce Overview — How Ohio divorce and dissolution work at a high level.
- Talk to a Family Law Attorney — Connect with an attorney for help with your Mercer County case.
Related to your non-parent custody case
- Paternity & Custody — Establish parentage and build a parenting plan that protects your children.
- Adoption — Grow your family through step-parent, agency, or kinship adoption.
- Child Support — Calculate, establish, or modify support under Ohio's guidelines.
Related guides
In-depth, attorney-written guides on non-parent custody and related Ohio family law topics.
- Grandparents' Rights in Ohio: Visitation and Custody — Ohio grandparents can sometimes seek court-ordered companionship time or even custody — but only in specific circumstances and always under the best-interest standard. Here's how it works.
- Ohio Child Custody Laws: What Every Parent Should Know — Ohio custody law turns on one principle: the best interest of the child. This guide explains sole custody, shared parenting, the statutory factors, and how courts decide.
- Kinship Adoption in Ohio: Adopting a Relative's Child — When a child can't safely stay with their parents, relatives often step in. Kinship adoption gives that arrangement legal permanence. Here's how it works in Ohio — and how it differs from custody.
Keep exploring Mercer County family law
- Ohio Grandparent / Non-Parent Custody guide — Statewide overview of grandparent / non-parent custody in Ohio.
- Dayton family law — Local attorneys and courts serving the Dayton metro.
- Mercer County family law guide — Court info, local filing notes, FAQs, and the downloadable Mercer County guide.
- Meet Stephanie Green — Managing Partner & Co-Founder at Gavvl Law.
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