Atty. Stephen Isaac Gassner

Atty. Stephen Isaac Gassner

Stephen Isaac Gassner is a lawyer practicing family law, paternity challenge, mediation and 11 other areas of law. Stephen received a M.I.S. degree from Claremont Graduate School in 1997, and has been licensed for 31 years.

Upland Upland 31 yrs experience 31 year
Call (909) 774-8030 Book Appointment

Profile Summary

About Stephen Isaac Gassner at a glance

Stephen Isaac Gassner is a Principal based in Upland, California, practicing at Law Office of Stephen Gassner, APC. They have 31+ years of legal experience, licensed to practice since 1995. Their practice focuses on divorce, child custody, family law, business, and real estate. Admitted to practice in California (1995). Educated at Claremont Graduate School (M.I.S. National, 1997) and University of La Verne College of Law (J.D., 1994). Recognitions include AV Preeminent. Active member of State Bar of California. Serands clients in Upland, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Stephen Isaac Gassner is a lawyer practicing family law, paternity challenge, mediation and 11 other areas of law
  • Stephen received a M.I.S. degree from Claremont Graduate School in 1997, and has been licensed for 31 years
  • Stephen practices at Law Office of Stephen Gassner, APC in Upland, CA

Practice Areas Explained

Stephen Isaac Gassner's Areas of Practice

Each practice area below reflects the types of cases Stephen Isaac Gassner handles, with a brief overview of what that area of law covers.

Divorce

A divorce attorney guides you through property division, spousal support, custody, and the final decree — contested or uncontested.

Stephen Isaac Gassner is one of 50,487 divorce attorneys indexed nationally. Browse divorce attorneys in California →

Child Custody & Visitation

Stephen Isaac Gassner is one of 31,241 child custody attorneys indexed nationally. Browse child custody attorneys in California →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Stephen Isaac Gassner is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in California →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Stephen Isaac Gassner is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Stephen Isaac Gassner is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Upland are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Upland or all attorneys in California.

Frequently Asked

Common questions about Stephen Isaac Gassner

Where is Stephen Isaac Gassner's law office located?
Stephen Isaac Gassner's law practice is located in Upland, California. The firm is Law Office of Stephen Gassner, APC. You can contact the office directly through this profile page.
What practice areas does Stephen Isaac Gassner handle?
Stephen Isaac Gassner focuses on divorce, child custody, family law, business, real estate. Each practice area listed reflects experience handling cases of that type in California.
How long has Stephen Isaac Gassner practiced law?
Stephen Isaac Gassner has 31+ years of legal experience and has been licensed since 1995.
Where did Stephen Isaac Gassner go to law school?
Stephen Isaac Gassner earned their education at (M.I.S. National, 1997); (J.D., 1994).
How can I contact Stephen Isaac Gassner for a consultation?
You can contact Stephen Isaac Gassner directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Stephen Isaac Gassner received?
Stephen Isaac Gassner's notable recognition includes: AV Preeminent.

Education

M.I.S. National
Claremont Graduate School
- 1997
J.D.
University of La Verne College of Law
- 1994

Awards

AV Preeminent

Bar Admissions

California
Admitted: 1995

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