Atty. Dennis M. Breen III

Atty. Dennis M. Breen III

Mr. Dennis M.

Tucson Tucson 51 yrs experience 51 year
Call (520) 675-1667 Book Appointment

Profile Summary

About Dennis M. Breen III at a glance

Dennis M. Breen III is a Principal based in Tucson, Arizona, practicing at Breen, Olson & Trenton LLP. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on wills, formation, trusts, probate, and estate planning. Admitted to practice in New York (Inactive) (1975) and Arizona (1978). Educated at Fordham University (MBA Fordham, 1973). Recognitions include Peer Reviewed. Active member of New York State Bar Association State Bar of Arizona. Serands clients in Tucson, AZ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Dennis M. Breen III is a lawyer practicing real estate, trusts and estates, wills and 9 other areas of law
  • Dennis M. received a degree from Fordham University in 1973, and has been licensed for 51 years
  • Dennis M. practices at Breen, Olson & Trenton LLP in Tucson, AZ

Practice Areas Explained

Dennis M. Breen III's Areas of Practice

Each practice area below reflects the types of cases Dennis M. Breen III handles, with a brief overview of what that area of law covers.

Wills

Dennis M. Breen III is one of 34,541 wills attorneys indexed nationally. Browse wills attorneys in Arizona →

Business Formation

Dennis M. Breen III is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Arizona →

Trusts

Dennis M. Breen III is one of 104,171 trusts attorneys indexed nationally. Browse trusts attorneys in Arizona →

Probate

Dennis M. Breen III is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Arizona →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Dennis M. Breen III is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in Arizona →

Jurisdictional Context

Why local counsel matters in Arizona

Practicing law in Arizona. Legal matters in Arizona are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Tucson are typically filed in the local municipal court or the appropriate Arizona state district court, depending on subject matter and amount in controversy. An attorney licensed in Arizona 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 Arizona courts without local counsel or pro hac vice admission.

Looking for additional Arizona attorneys? Browse all attorneys in Tucson or all attorneys in Arizona.

Frequently Asked

Common questions about Dennis M. Breen III

Where is Dennis M. Breen III's law office located?
Dennis M. Breen III's law practice is located in Tucson, Arizona. The firm is Breen, Olson & Trenton LLP. You can contact the office directly through this profile page.
What practice areas does Dennis M. Breen III handle?
Dennis M. Breen III focuses on wills, formation, trusts, probate, estate planning. Each practice area listed reflects experience handling cases of that type in Arizona.
How long has Dennis M. Breen III practiced law?
Dennis M. Breen III has 51+ years of legal experience and has been licensed since 1975.
Where did Dennis M. Breen III go to law school?
Dennis M. Breen III earned their education at (MBA Fordham, 1973).
How can I contact Dennis M. Breen III for a consultation?
You can contact Dennis M. Breen III 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 Dennis M. Breen III received?
Dennis M. Breen III's notable recognition includes: Peer Reviewed.

Education

MBA Fordham
Fordham University
- 1973

Awards

Peer Reviewed

Bar Admissions

New York (Inactive)
Admitted: 1975
Arizona
Admitted: 1978

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