Atty. John Mansour

Atty. John Mansour

John Mansour is a lawyer practicing business, construction & development, civil litigation and 2 other areas of law. John received a B.A. degree from University of California at Irvine in 1996, and has been licensed for 27 years.

Rancho Cucamonga Rancho Cucamonga 27 yrs experience 27 year
Call (840) 256-4123 Book Appointment

Profile Summary

About John Mansour at a glance

John Mansour is a Member based in Rancho Cucamonga, California, practicing at Mansour Law Group. They have 27+ years of legal experience, licensed to practice since 1999. Their practice focuses on business, real estate, bankruptcy, and litigation. Admitted to practice in California (1999). Educated at University of San Diego School of Law (J.D., 1999) and University of California at Irvine (B.A., 1996). Active member of Education Chair, 2000-2002, State Bar of California Building Industry Association Rancho Cucamonga Chamber of Commerce Upland Chamber of Commerce Orange County Bar Association. Serands clients in Rancho Cucamonga, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Mansour is a lawyer practicing business, construction & development, civil litigation and 2 other areas of law
  • John received a B.A. degree from University of California at Irvine in 1996, and has been licensed for 27 years
  • John practices at Mansour Law Group in Rancho Cucamonga, CA

Practice Areas Explained

John Mansour's Areas of Practice

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

Business & Corporate Law

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

John Mansour 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.

John Mansour is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in California →

Bankruptcy & Debt

A bankruptcy attorney can help you eliminate debt, stop creditor harassment, and protect your home through Chapter 7 or Chapter 13.

John Mansour is one of 105,321 bankruptcy attorneys indexed nationally. Browse bankruptcy attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

John Mansour is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 Rancho Cucamonga 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 Rancho Cucamonga or all attorneys in California.

Frequently Asked

Common questions about John Mansour

Where is John Mansour's law office located?
John Mansour's law practice is located in Rancho Cucamonga, California. The firm is Mansour Law Group. You can contact the office directly through this profile page.
What practice areas does John Mansour handle?
John Mansour focuses on business, real estate, bankruptcy, litigation. Each practice area listed reflects experience handling cases of that type in California.
How long has John Mansour practiced law?
John Mansour has 27+ years of legal experience and has been licensed since 1999.
Where did John Mansour go to law school?
John Mansour earned their education at (J.D., 1999); (B.A., 1996).
How can I contact John Mansour for a consultation?
You can contact John Mansour 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.

Education

J.D.
University of San Diego School of Law
- 1999
B.A.
University of California at Irvine
- 1996

Bar Admissions

California
Admitted: 1999

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