Establishing Paternity in Warren County

How do I establish paternity in Warren County, Ohio?

File a Complaint to Determine Parentage at the Warren County Juvenile Court, 900 Memorial Drive, Lebanon, OH 45036 — the deposit is $160 (plus $50 per additional child). Include the IV-D Application and, where applicable, proof of an R.C. 3111.38 administrative determination (Local Rule 5.1). Either party can ask for genetic testing; tests run 99%+ accurate. Once paternity is established, the same case can set custody, parenting time, and child support.

Where to File: Warren County Domestic Relations Court

Juvenile Branch (Never-Married Parents)

Warren County Juvenile Court (Probate/Juvenile Division)
900 Memorial Drive, Lebanon, OH 45036, Lebanon, OH 45036
Phone: (513) 695-1160
Hours: Monday–Friday, 8:00 a.m. – 4:00 p.m.

Paternity is the right path if…

• The parents were never married and legal fatherhood has not been established.
• You want a court order for custody, parenting time, or child support that depends on parentage.
• You need genetic testing to confirm or rule out the alleged father.
• Ohio has jurisdiction over the child.

Filing Fees

Determine Parentage complaint: $160 + $50 per additional child · Genetic testing ordered as needed · Personal service by Sheriff $25/person

Forms & Filing Packets

How to File Paternity in Warren County

1. File the parentage complaint. File a Complaint to Determine Parentage at the Warren County Juvenile Court, 900 Memorial Drive ($160 plus $50 per additional child), with proof of any administrative determination.
2. Request genetic testing if needed. Either parent can ask the court or CSEA to order genetic testing at a designated lab; results are 99%+ accurate.
3. Add custody and support. Once paternity is established, file the support worksheet, IV-D Application, and any custody/parenting-time request in the same case.

Warren County Practice Notes

• Genetic testing. Either party can request genetic testing. The court (or CSEA) will order the parties and child to a designated lab. Tests run 99%+ accurate. If the alleged father is excluded, the case is dismissed and the Ohio Department of Health updates the birth record.
• Administrative determination proof required. Under Juvenile Local Rule 5.1, a Warren County parentage filing must include proof of any R.C. 3111.38 administrative determination, and Social Security numbers are not filed publicly. CSEA can issue an administrative paternity order before the court case in many situations.

Frequently Asked Questions

Do I file in Domestic Relations or Juvenile Court in Warren County?

Warren County splits the two courts onto different campuses. The Domestic Relations Court at 500 Justice Drive hears married-parent matters — divorce, dissolution, legal separation, annulment, and the custody/support that travels with them. The Juvenile Court at 900 Memorial Drive hears never-married-parent matters — paternity, custody, parenting time, child support, and grandparent/non-parent custody. Under Rees v. Rees (2026-Ohio-1235, 12th Dist.), grandparent and relative visitation goes to DR when the parents are or ever were married or a parent is deceased.

How much does it cost to file in Warren County?

Domestic Relations deposits (Clerk Breighton Smith, eff. 7/1/2025): a divorce or dissolution case is $400 with children and $300 without children; a case served by publication is $500; a married-living-apart custody/support complaint is $350; a post-decree motion is $75; and personal service by the Sheriff is $50 per party. An Affidavit of Indigency reduces the deposit to $15. Juvenile Court complaints (custody, parentage, support, visitation, shared parenting) are $160 plus $50 per additional child, and Juvenile motions are $75. Civil Protection Orders have no filing fee.

What does the Warren County CSEA do?

The Warren County Child Support Enforcement Agency at 500 Justice Drive, P.O. Box 440, Lebanon, OH 45036-0440, phone (513) 695-1580, opens IV-D cases, runs the Ohio Income Shares calculation, collects support by wage withholding, distributes payments, and enforces orders. Warren adds a 2% processing charge on all support, plus 20% of the current order on arrearages. File the IV-D Application (DR Form 12 or WCJC Form 11) whenever a support order is set.

Can I rescind an Acknowledgment of Paternity in Ohio?

A signed Acknowledgment of Paternity can be rescinded within 60 days of the last signature by contacting your local Child Support Enforcement Agency and completing a Request for Paternity Determination. After 60 days you must challenge the acknowledgment in court within 1 year on grounds of fraud, duress, or material mistake of fact (R.C. 3111.27). Genetic testing is typically ordered, and the Ohio Department of Health updates the birth record if the alleged father is excluded.

Free Local Resources in Warren County

• Warren County DR Help Center & Document Center. The DR Help Center at 500 Justice Drive helps self-represented parties fill out printed Document Center forms on Tuesdays 1–3 p.m. and Thursdays 9–11 a.m. All Domestic Relations forms and case-type filing packets are posted at warrencountyohio.gov/Domestic_Relations_Court/Forms.
• Warren County Probate/Juvenile Legal Help Center. Walk-in help at 900 Memorial Drive on Thursdays 8 a.m.–noon, where an attorney answers legal questions and provides filing packets regardless of financial situation (no attorney-client relationship is formed).
• Warren County Child Support Enforcement Agency (CSEA). Warren County's IV-D agency at (513) 695-1580, csea.warrencountyohio.gov, opens and enforces support cases, runs the Ohio Income Shares calculation, and processes payments through OCSPC.
• Warren County CASA Program. More than 50 trained CASA volunteers, directed by Melissa Perduk, advocate for abused and neglected children in the child-welfare system. Details at warrencountyohio.gov/Probate_Juvenile/CASA/CASA/Index.

Other Family-Law Topics in Warren County

• Warren County Divorce — Contested divorce filing guide for the DR Court at 500 Justice Drive.
• Warren County Dissolution — The agreed, both-spouses-sign track with a hearing 31–90 days after filing.
• Warren County Custody — Married parents file in DR; never-married parents file at the Juvenile Court.

Related to your paternity case

• Child Support — Calculate, establish, or modify support under Ohio's guidelines.
• Grandparents' Rights — Seek visitation or custody when it serves the child's best interest.
• Post-Decree Modification — Update custody, support, or parenting orders after your case ends.

Keep exploring

• Ohio Paternity guide — Statewide overview of paternity in Ohio.
• Cincinnati family law — Local attorneys and courts serving the Cincinnati metro.
• Meet Stephanie Green — Managing Partner & Family Law Attorney at Gavvl Law.
• Payment plans & financing — Flat fees with Gavvl Direct, Affirm, Klarna, or PayPal Pay Later.