Paternity Attorneys in Ventura
Serving Mothers, Fathers & Children Across Ventura County Since 2010
Paternity cases shape some of the most consequential decisions a family will face: who holds legal rights to a child, who carries financial responsibility, and what the child’s future looks like. At Zahn Law Offices, APC, we’ve handled paternity and family law matters in Ventura, Los Angeles, and Santa Barbara Counties since 2010, with over 30 years of combined legal experience on our team. Whether you’re a mother seeking child support, a father pursuing custody and visitation, or an alleged father contesting a claim, our attorneys work directly with you from the first consultation through final resolution.
We serve clients throughout Ventura County and Los Angeles County, including Thousand Oaks, Simi Valley, Oxnard, Camarillo, and Encino. Free consultations are available by phone, giving you a no-cost starting point before committing to representation.
Speak with a paternity attorney in Ventura today. Call (805) 804-9100 for a free consultation.
How Paternity Is Established in California

California law recognizes two primary ways to establish paternity. The first is a Voluntary Declaration of Paternity, a document both parents typically sign at the time of the child’s birth. Once filed with the California Department of Child Support Services, this declaration carries the same legal weight as a court order. The father’s name is added to the birth certificate, and both parents assume legal rights and responsibilities from that point forward.
Voluntary Declaration of Paternity
Because a signed Voluntary Declaration of Paternity is difficult to undo, even if later genetic testing shows no biological connection, consulting an attorney before signing is advisable. The decision has lasting legal consequences for everyone involved, including the child.
Establishing Paternity Through the Court
The second path is through the court. Under California Family Code parentage provisions, several parties may request a court order establishing paternity:
- The child
- The mother of the child
- A presumed parent
- The Department of Child Support Services
- An adoption agency
- In certain circumstances, a man alleged or claiming to be the father
Deadlines for contesting paternity vary depending on how paternity was established and when the relevant facts became known, though challenges are generally subject to a two-year window. Exceptions may apply, which is why acting promptly matters. Claims that may be filed include establishing paternity, petitioning to acknowledge paternity, proceedings related to child custody or support, and contesting paternity.
Rights the Child Gains Upon Establishment

Once paternity is legally established, the child gains meaningful rights:
- Financial support from both parents
- Access to both parents’ medical and family history
- Inheritance rights
- Eligibility for health and life insurance from both parents
- Potential eligibility for social security and veterans’ benefits
The Paternity Court Process in Ventura County
When a paternity case goes to court, the judge may order genetic testing of the mother, the child, and the alleged father. Under California law, a party’s refusal to submit to genetic testing is admissible as evidence in any proceeding to determine parentage. In contested proceedings, a minor’s counsel may also be appointed to represent the child’s best interests independently.
Beyond establishing paternity, the court has authority to order:
- Child support
- Physical and legal custody
- Visitation rights
- Court costs, including payment for genetic testing and attorney’s fees
California law recognizes that an unwed biological father may have the right to a parental relationship with his child, provided he doesn’t demonstrate unfitness as a parent. Once paternity is established, either parent may seek modifications to custody, support, or visitation orders as circumstances change.
Ventura County Superior Court requires mandatory mediation for contested custody disputes before a hearing can proceed. That means the outcome of a paternity-triggered custody case is often shaped significantly during mediation, before a judge weighs in at all. We’ve practiced in Ventura County family courts since 2010 and know how to prepare clients for that process with a clear strategy and realistic expectations.
Why Ventura County Clients Choose Zahn Law Offices, APC
Family law clients tell us the same thing consistently: they needed an attorney who stayed engaged throughout the case, not one who handed the file to support staff after the retainer was signed. At our firm, every paternity case is managed directly by a licensed attorney from intake through final resolution. The attorney who builds your strategy is the same attorney present when decisions need to be made.
Credentials & Recognition
Zahn Law Offices, APC holds a Client Champion Gold designation from Martindale-Hubbell, awarded based on a minimum of six verified client reviews with a score of 4.2 or higher. Our lead attorney carries a 10.0 rating on Avvo and has received Super Lawyers Rising Star recognition. Verified reviewers on Yelp, lawyers.com, and other platforms consistently highlight responsive communication and attorney availability throughout active matters.
Flexible Payment Plans
We offer flexible payment plans across all practice areas. Paternity cases, particularly those involving contested custody or support, can extend over many months. Our payment arrangements are structured around what clients can realistically sustain, so financial pressure doesn’t lead clients to consider changes to representation midway through a case.
Talk to a Paternity Lawyer in Ventura at No Cost
If you’re facing a paternity matter in Ventura County or the surrounding region, a free consultation is the right first step. We can review the facts of your situation, walk you through your legal options under California law, and give you a realistic picture of what to expect before you commit to anything. We serve clients across Ventura County, Los Angeles County, and Santa Barbara County.
Call Zahn Law Offices, APC at (805) 804-9100 to schedule your free consultation with a paternity attorney in Ventura.
Clients Share Their Experiences
Working Together to Secure Your Future
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"Zahn law office has represented me multiple times and handled things beyond my expectations."
The Zahn law office is very professional and focuses on your needs. Custody and visitation was handled promptly.- Angel M. -
"I would recommend him to anyone looking for a good attorney."
He made magic happen when No other attorney would even take the time to discuss my matter.- Chris M. -
"Mr. Fuller specifically, made sure that I understood everything that was happening and that I was being taken care of."
Their office helped not only resolve the issue, but ensured the agreement was fair and in the best interest of my son.- Mike P. -
"I want to thank Allison Novik for her sincere support from the first time we met at her office."
All her communications and follow-ups were precise, on time, efficient and always reinforced my confidence that my case was handled in the best possible way.
- Kristian G. -
"Paul is an honest, hardworking, and wonderful attorney."
He has been fair with billing and stayed with me even when money was tight.- Erica W. -
"By far, Mr. Zahn went above and beyond to help me with my situation."
I was referred to the Zahn Law Officer from another attorney who doesn't handle family law. Without hesitation, Mr. Zahn was willing to help me file child support paperwork in another county. The documents were filed via e-file. Within about a week in a half, the paperwork was filed and the issue was taken care of. His secretary Donna Hernandez always kept in contact with me, updating me with the status of the filing. By far, Mr. Zahn went above and beyond to help me with my situation.- Allen M.
The Zahn Law Offices, APC Difference
Personalized Counsel Every Step of the Way
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Our Legal Team Has 30+ Years of Combined Experience
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Our Lawyers Have Been Named to Super Lawyers Rising Star List
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We Offer Flexible, Affordable Payment Plans
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We Provide Quality Legal Service at Reasonable Rates