Atty. William L. Brennan

Atty. William L. Brennan

William L. Brennan is a lawyer practicing tort, real estate, commercial law and 1 other area of law.

New York New York 42 yrs experience 42 year
Call (866) 270-7256 Book Appointment

Profile Summary

About William L. Brennan at a glance

William L. Brennan is a Shareholder based in New York, New York, practicing at Koster, Brady & Nagler, LLP. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on personal injury, business, and real estate. Admitted to practice in New York (1984), New Jersey (1985), U.S. District Court, District of New Jersey (1985), and Pennsylvania (1993). Educated at Fordham University (J.D., 1983) and Seton Hall University (B.A., 1980). Active member of New York State and American Bar Associations New York State Trial Lawyers Associations. Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William L. Brennan is a lawyer practicing tort, real estate, commercial law and 1 other area of law
  • William received a B.A. degree from Seton Hall University in 1980, and has been licensed for 42 years
  • William practices at Koster, Brady & Nagler, LLP in New York, NY and 1 other location

Practice Areas Explained

William L. Brennan's Areas of Practice

Each practice area below reflects the types of cases William L. Brennan handles, with a brief overview of what that area of law covers.

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

William L. Brennan is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in New York →

Business & Corporate Law

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

William L. Brennan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New York →

Real Estate Law

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

William L. Brennan is one of 316,149 real estate attorneys indexed nationally. Browse real estate 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 New York 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 New York or all attorneys in New York.

Frequently Asked

Common questions about William L. Brennan

Where is William L. Brennan's law office located?
William L. Brennan's law practice is located in New York, New York. The firm is Koster, Brady & Nagler, LLP. You can contact the office directly through this profile page.
What practice areas does William L. Brennan handle?
William L. Brennan focuses on personal injury, business, real estate. Each practice area listed reflects experience handling cases of that type in New York.
How long has William L. Brennan practiced law?
William L. Brennan has 42+ years of legal experience and has been licensed since 1984.
Where did William L. Brennan go to law school?
William L. Brennan earned their education at (J.D., 1983); (B.A., 1980).
How can I contact William L. Brennan for a consultation?
You can contact William L. Brennan 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.
Fordham University
- 1983
B.A.
Seton Hall University
- 1980

Bar Admissions

New York
Admitted: 1984
New Jersey
Admitted: 1985
U.S. District Court, District of New Jersey
Admitted: 1985
Pennsylvania
Admitted: 1993
U.S. Court of Appeals
Admitted: 1994

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