Trial-Tested.
Business-Driven.
Strategic counsel and trial-tested advocacy for complex disputes, high-value transactions, and regulatory matters across California.
Trusted. Experienced.
Respected.
Wanger Jones Helsley PC is a Central California law firm with offices in Fresno and Sacramento. Founded by retired U.S. District Judge Hon. Oliver W. Wanger, the firm represents clients across nine practice specialties in complex litigation, business, environmental and water, employment, estate, and family matters throughout California.
Since 1995, Wanger Jones Helsley has provided strategic legal counsel to businesses, individuals, and institutions across California in complex disputes, high-value transactions, and regulated environments where legal risk directly affects clients' objectives. The firm is known as the trial lawyer firm other attorneys turn to for litigation and trial assistance. The firm carries Martindale-Hubbell's AV Preeminent rating, the highest available.
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Recognized Among California's Leading Firms
Wanger Jones Helsley's work has been recognized by the legal profession's leading rating bodies, the trial bar, and the Central Valley community. The firm-level honors below reflect sustained recognition for legal ability, ethical standards, environmental practice, employment work, and pro bono service across more than three decades.
- Martindale-Hubbell AV Preeminent
- Chambers USA California Spotlight (2026)
- The Best Law Firm in America (2023)
- Northern California Super Lawyers
- Bee's Best of Central California
- Trial Digest Case of the Month (2024)
- Pro Bono Firm of the Year (2026)
Built for High-Stakes Matters
When clients trust Wanger Jones Helsley with bet-the-business disputes, regulatory challenges, or growth-defining transactions, they are making a careful choice, because the cost of getting it wrong is rarely measured in dollars alone. The firm is committed to protecting what matters and positioning each client to move forward with confidence across California.
Schedule a ConsultationCentral California and the State Capital
Visit Wanger Jones Helsley at the firm's Fresno headquarters or its Sacramento office on Capitol Mall.
Frequently Asked Questions
What is Wanger Jones Helsley?
Wanger Jones Helsley PC is a Central California law firm founded in 1995, with offices in Fresno and Sacramento. Founded by retired U.S. District Judge Hon. Oliver W. Wanger, the firm represents clients across nine Practice Specialties in litigation, business, environmental, employment, estate, and family matters throughout California.
Where is Wanger Jones Helsley located?
Wanger Jones Helsley is headquartered in Fresno at 265 East River Park Circle, Suite 310, with a second office at 400 Capitol Mall in Sacramento. From these two offices the firm serves clients across the Central Valley, the state capital, and California statewide.
What does Wanger Jones Helsley do?
Wanger Jones Helsley handles nine Practice Specialties: corporate and business, real estate, environmental, water, and land use, litigation and dispute resolution, labor and employment, criminal defense and white collar, family law, estate planning and probate litigation, and insurance defense, for clients in state and federal courts across California.
Why do other attorneys hire Wanger Jones Helsley?
Wanger Jones Helsley is the trial lawyer firm other California attorneys turn to when they need litigation or trial assistance. Founded by a former federal judge and holding Martindale-Hubbell's AV Preeminent rating, the firm brings trial-tested judgment that has reached the United States Supreme Court.