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Welcome

About Leah Costanzo, P.C. — Personal Injury Trial AttorneyHIGHER STANDARDSHIGHER EXPECTATIONSHIGHER ADVOCACY

Leah Costanzo, P.C. is a personal injury law firm in Western New York, built on a simple principle: when you've been hurt because of someone else's negligence, you deserve a lawyer who knows your name, knows your case, and picks up the phone. Here, every client receives personal attention and direct access to an experienced attorney—because your case should never feel like just another file.

Attorney Leah Costanzo

Leah Costanzo, Esq.

Founder & Trial Attorney | Leah Costanzo, P.C.

Leah Costanzo is a highly experienced personal injury trial attorney with a proven record of successfully advocating for injured individuals and their families.

Before dedicating her practice to representing injured people, Leah spent years on the other side of personal injury litigation, representing major insurance companies and their insureds in complex cases and at trial. That experience now gives her clients a distinct advantage.

Leah understands how insurance companies evaluate claims, defend lawsuits, prepare cases for trial, and make decisions about settlement. She knows the strategies insurance companies and their attorneys use because she has seen them firsthand. Today, she puts that knowledge to work exclusively for injured people—anticipating the defense, identifying weaknesses in the opposition's case, and building claims designed to maximize recovery.

For Leah, personal injury law is about more than negotiating a settlement. It is about making sure her clients have a strong advocate in their corner when they are facing an insurance company with significant resources behind it. Whether a case can be resolved through negotiation or requires taking the fight to the courtroom, Leah prepares every case with the determination and attention it deserves.

Leah is a certified trial advocate through the National Institute for Trial Advocacy (NITA) and has established herself as an accomplished trial attorney in Western New York. She brings extensive courtroom experience, meticulous preparation, and a competitive approach to every case she handles.

Leah earned her Juris Doctor from the University at Buffalo School of Law, where she distinguished herself as an advocate and received the Robert J. Connelly Trial Technique Award for excellence in trial advocacy. She was also honored with the Judge William J. Regan Award in recognition of her dedication to public service and the welfare of the community.

Prior to representing injured plaintiffs, Leah served as a Senior Trial Lawyer for a major insurance company, where her litigation work earned her the Distinguished Performance Award in Litigation Services.

That combination of experience—defending cases for insurance companies and now fighting on behalf of injured people—shapes the way Leah practices law today. She understands what happens on both sides of a personal injury case, and she uses that insight to develop smarter strategies, prepare stronger cases, and pursue the best possible result for every client.

At Leah Costanzo, P.C., clients work directly with an experienced trial attorney who knows their case, understands what is at stake, and is prepared to stand up to the insurance companies on their behalf.

She used to represent the insurance companies. Now, she fights for you.

Bar Admissions

New York
Maryland
United States District Court - Western District of NY
United States District Court - Northern District of NY
United States District Court - Eastern District of New York
United States Bankruptcy Court - Western District of NY
United States District Court - Northern District of California

Honors

Distinguished Performance Award - Litigation
Judge William J. Reagan Award
Robert J. Connelly Trial Technique Award
Super Lawyers
Super Lawyers - Rising Stars

Why Clients Choose HER

Direct access

You talk to your attorney, not a case manager or a call center. Your questions get answered by the person handling your case.

Trial-ready preparation

Every case is prepared as if it's going before a jury. Insurance companies know which firms are willing to try a case — and it shows in their offers.

Local & invested

Based in Williamsville and serving Western New York. We know the local courts, and our reputation in this community matters to us.

How we handle your case

  1. 1

    Free consultation

    We listen to what happened and tell you honestly whether you have a case — at no cost.

  2. 2

    Investigation

    We gather police reports, medical records, witness statements, and photos before evidence vanishes.

  3. 3

    Demand & negotiation

    We build a complete damages picture and demand full value from the insurer.

  4. 4

    Trial, if needed

    If they won't do right, we file suit and prepare to put your case in front of a jury.

Ready to talk?

The consultation is free and confidential. Call (716) 716-LEAH (5324) or pick a time online.

Book a consultation