Atty. James S. Drennan

Atty. James S. Drennan

James S. Drennan is a lawyer practicing oil and gas law, estate planning, real estate (property) law and 2 other areas of law.

Oklahoma City Oklahoma City 49 yrs experience 49 year
Call (405) 213-0265 Book Appointment

Profile Summary

About James S. Drennan at a glance

James S. Drennan is a Managing Partner based in Oklahoma City, Oklahoma, practicing at Monnet, Hayes, Bullis, Thompson & Edwards, PLLC. They have 49+ years of legal experience, licensed to practice since 1977. Their practice focuses on estate planning, business, real estate, and energy. Admitted to practice in Oklahoma (1977). Educated at University of Oklahoma (J.D., 1977) and Oklahoma State University (B.S. Oklahoma, 1972). Recognitions include AV Preeminent. Active member of Oklahoma and American Bar Associations. Serands clients in Oklahoma City, OK and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • James S. Drennan is a lawyer practicing oil and gas law, estate planning, real estate (property) law and 2 other areas of law
  • James S. received a B.S. degree from Oklahoma State University in 1972, and has been licensed for 49 years
  • James S. practices at Monnet, Hayes, Bullis, Thompson & Edwards, PLLC in Oklahoma City, OK

Practice Areas Explained

James S. Drennan's Areas of Practice

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

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.

James S. Drennan is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in Oklahoma →

Business & Corporate Law

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

James S. Drennan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Oklahoma →

Real Estate Law

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

James S. Drennan is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Oklahoma →

Energy & Utilities Law

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

James S. Drennan is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in Oklahoma →

Jurisdictional Context

Why local counsel matters in Oklahoma

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

Looking for additional Oklahoma attorneys? Browse all attorneys in Oklahoma City or all attorneys in Oklahoma.

Frequently Asked

Common questions about James S. Drennan

Where is James S. Drennan's law office located?
James S. Drennan's law practice is located in Oklahoma City, Oklahoma. The firm is Monnet, Hayes, Bullis, Thompson & Edwards, PLLC. You can contact the office directly through this profile page.
What practice areas does James S. Drennan handle?
James S. Drennan focuses on estate planning, business, real estate, energy. Each practice area listed reflects experience handling cases of that type in Oklahoma.
How long has James S. Drennan practiced law?
James S. Drennan has 49+ years of legal experience and has been licensed since 1977.
Where did James S. Drennan go to law school?
James S. Drennan earned their education at (J.D., 1977); (B.S. Oklahoma, 1972).
How can I contact James S. Drennan for a consultation?
You can contact James S. Drennan 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 James S. Drennan received?
James S. Drennan's notable recognition includes: AV Preeminent.

Education

J.D.
University of Oklahoma
- 1977
B.S. Oklahoma
Oklahoma State University
- 1972

Awards

AV Preeminent

Bar Admissions

Oklahoma
Admitted: 1977

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