Atty. David K. O'Brien

Atty. David K. O'Brien

Recipient: C.J.S. Award, 1976; American Jurisprudence Awards: Torts, Remedies, Legal Process, Conflicts, Intellectual Property; Cumberland Bar Award, 1978.

East Hampton East Hampton 48 yrs experience 48 year
Call (631) 407-0426 Book Appointment

Profile Summary

About David K. O'Brien at a glance

David K. O'Brien is a Partner based in East Hampton, New York, practicing at Ackerman, Pachman, Brown & Goldstein, LLP. They have 48+ years of legal experience, licensed to practice since 1978. Their practice focuses on real estate, zoning, and insurance. Admitted to practice in Maine (1978) and New York U.S. District Courts of the Southern and Eastern Districts of New York U.S. Courts of Appea (1983). Educated at University of Maine (J.D., 1978) and Swarthmore College (B.A. State, 1965). Recognitions include BV Distinguished. Active member of Suffolk County Bar Association. Serands clients in East Hampton, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

Recipient

  • C.J.S
  • Award, 1976;

American Jurisprudence Awards

  • Torts, Remedies, Legal Process, Conflicts, Intellectual Property
  • Cumberland Bar Award, 1978
  • Editor-in-Chief, Maine Law Review, 1978

Law Clerk

  • Hon. George J. Mitchell, U.S
  • District Judge, District of Maine, 1979
  • Hon. Sidney W. Wernick, Associate Justice, Maine Supreme Judicial Court, 1978

Author

  • "New Policies Bearing on the Negligent Employer's Immunity from Loss-Sharing," 29 Maine Law Review 243, 1977
  • "Conduct of Plaintiff/Claimant Affecting Coverage," Insurance Coverage Issues and Applications, New York State Bar Association, 1994

Practice Areas Explained

David K. O'Brien's Areas of Practice

Each practice area below reflects the types of cases David K. O'Brien handles, with a brief overview of what that area of law covers.

Real Estate Law

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

David K. O'Brien is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in New York →

Land Use & Zoning

David K. O'Brien is one of 40,226 zoning attorneys indexed nationally. Browse zoning attorneys in New York →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

David K. O'Brien is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

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

Looking for additional New York attorneys? Browse all attorneys in East Hampton or all attorneys in New York.

Frequently Asked

Common questions about David K. O'Brien

Where is David K. O'Brien's law office located?
David K. O'Brien's law practice is located in East Hampton, New York. The firm is Ackerman, Pachman, Brown & Goldstein, LLP. You can contact the office directly through this profile page.
What practice areas does David K. O'Brien handle?
David K. O'Brien focuses on real estate, zoning, insurance. Each practice area listed reflects experience handling cases of that type in New York.
How long has David K. O'Brien practiced law?
David K. O'Brien has 48+ years of legal experience and has been licensed since 1978.
Where did David K. O'Brien go to law school?
David K. O'Brien earned their education at (J.D., 1978); (B.A. State, 1965).
How can I contact David K. O'Brien for a consultation?
You can contact David K. 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.
What awards or recognition has David K. O'Brien received?
David K. O'Brien's notable recognition includes: BV Distinguished.

Education

J.D.
University of Maine
- 1978
B.A. State
Swarthmore College
- 1965

Awards

BV Distinguished

Bar Admissions

Maine
Admitted: 1978
New York U.S. District Courts of the Southern and Eastern Districts of New York U.S. Courts of Appea
Admitted: 1983

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