Atty. Ellen T. O'Brien

Atty. Ellen T. O'Brien

Ellen T. O'Brien is a lawyer practicing environmental.

Sioux Falls Sioux Falls 47 yrs experience 47 year
Book Appointment

Profile Summary

About Ellen T. O'Brien at a glance

Ellen T. O'Brien is a environmental attorney based in Sioux Falls, South Dakota. They have 47+ years of legal experience, licensed to practice since 1979. Admitted to practice in Maryland (1979). Educated at University of Maryland (J.D., 1979) and College of St. Catherine (B.A. Johns, 1961). Serands clients in Sioux Falls, SD and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Ellen T. O'Brien is a lawyer practicing environmental
  • Ellen T. received a B.A. degree from College of St. Catherine in 1961, and has been licensed for 47 years
  • Ellen T. practices in Sioux Falls, SD

Practice Areas Explained

Ellen T. O'Brien's Areas of Practice

Each practice area below reflects the types of cases Ellen T. O'Brien handles, with a brief overview of what that area of law covers.

Environmental Law

Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.

Ellen T. O'Brien is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in South Dakota →

Jurisdictional Context

Why local counsel matters in South Dakota

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

Looking for additional South Dakota attorneys? Browse all attorneys in Sioux Falls or all attorneys in South Dakota.

Frequently Asked

Common questions about Ellen T. O'Brien

Where is Ellen T. O'Brien's law office located?
Ellen T. O'Brien's law practice is located in Sioux Falls, South Dakota. You can contact the office directly through this profile page.
What practice areas does Ellen T. O'Brien handle?
Ellen T. O'Brien focuses on environmental. Each practice area listed reflects experience handling cases of that type in South Dakota.
How long has Ellen T. O'Brien practiced law?
Ellen T. O'Brien has 47+ years of legal experience and has been licensed since 1979.
Where did Ellen T. O'Brien go to law school?
Ellen T. O'Brien earned their education at (J.D., 1979); (B.A. Johns, 1961).
How can I contact Ellen T. O'Brien for a consultation?
You can contact Ellen T. O'Brien 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.

Practice Areas

Education

J.D.
University of Maryland
- 1979
B.A. Johns
College of St. Catherine
- 1961

Bar Admissions

Maryland
Admitted: 1979

Reviews

These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.