Atty. Matthew John Deenihan

Atty. Matthew John Deenihan

Matthew John Deenihan is a lawyer practicing hoa, insurance defense, litigation and 3 other areas of law. Matthew received a B.A. degree from University of California, Berkeley in 2003, and has been licensed for 20 years.

Costa Mesa Costa Mesa 20 yrs experience 20 year
Call (760) 558-4070 Book Appointment

Profile Summary

About Matthew John Deenihan at a glance

Matthew John Deenihan is a Partner based in Costa Mesa, California, practicing at Messner Reeves LLP. They have 20+ years of legal experience, licensed to practice since 2006. Their practice focuses on residential, car accidents, real estate, hoa, and litigation. Admitted to practice in California (2006). Educated at Georgetown University Law Center (J.D., 2006) and University of California, Berkeley (B.A. Political, 2003). Serands clients in Costa Mesa, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Matthew John Deenihan is a lawyer practicing hoa, insurance defense, litigation and 3 other areas of law
  • Matthew received a B.A. degree from University of California, Berkeley in 2003, and has been licensed for 20 years
  • Matthew practices at Messner Reeves LLP in Costa Mesa, CA

Practice Areas Explained

Matthew John Deenihan's Areas of Practice

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

Residential Real Estate

Matthew John Deenihan is one of 9,343 residential attorneys indexed nationally. Browse residential attorneys in California →

Car Accidents

Hurt in a car crash? Car accident lawyers fight insurance companies for fair compensation — free consult, no fee unless you win.

Matthew John Deenihan is one of 36,807 car accidents attorneys indexed nationally. Browse car accidents attorneys in California →

Real Estate Law

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

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

HOA & Condominium Law

Matthew John Deenihan is one of 5,637 hoa attorneys indexed nationally. Browse hoa attorneys in California →

Civil Litigation

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

Matthew John Deenihan 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 Costa Mesa 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 Costa Mesa or all attorneys in California.

Frequently Asked

Common questions about Matthew John Deenihan

Where is Matthew John Deenihan's law office located?
Matthew John Deenihan's law practice is located in Costa Mesa, California. The firm is Messner Reeves LLP. You can contact the office directly through this profile page.
What practice areas does Matthew John Deenihan handle?
Matthew John Deenihan focuses on residential, car accidents, real estate, hoa, litigation. Each practice area listed reflects experience handling cases of that type in California.
How long has Matthew John Deenihan practiced law?
Matthew John Deenihan has 20+ years of legal experience and has been licensed since 2006.
Where did Matthew John Deenihan go to law school?
Matthew John Deenihan earned their education at (J.D., 2006); (B.A. Political, 2003).
How can I contact Matthew John Deenihan for a consultation?
You can contact Matthew John Deenihan 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.
Georgetown University Law Center
- 2006
B.A. Political
University of California, Berkeley
- 2003

Bar Admissions

California
Admitted: 2006

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