Our offices are temporarily located at Harbor Place, 2 Merrimac Street, 3rd Floor, Haverhill, MA 01830 while we renovate our beautiful building, however our mailing address is still 546 Main Street.
In the News
NBC10 Boston Responds:
Under-Covered for Your Car?
Couple’s Case Highlights Under-Insurance
Partners Marsha V. Kazarosian and Walter A. Costello, Jr., talk to NBC10 about the real issues with underinsurance in an accident case.
I couldn’t have had a better experience than I had with Marsha Kazarosian and the entire staff at Kazarosian Costello law firm. Marsha was a god-send!
Sandra Peskin
Google Review
If you need a good lawyer, if you need advice, I would suggest that you visit these attorneys. They have my full confidence.
T. Lavoie
Google Review
PRACTICE AREAS
We are steadfast legal advocates for our clients in cases involving:
Personal Injury
If you or a loved one has been injured or involved in an accident, our attorneys can advise you on the rights and remedies available to you.
Police Misconduct / Civil Rights
We are deeply committed to protecting clients who have been victims of unfair or discriminatory treatment in violation of their civil rights.
Medical Malpractice
For decades, we have successfully litigated medical malpractice cases on behalf of injured patients and their families.
Employment Law
In the workplace, if your employer makes an employment decision based on a discriminatory reason, you may be protected by state and/or federal law.
Discrimination
If you have experienced discrimination, you have legal recourse. The lawyers at our firm are here to evaluate your case and advise you about your options.
Family Law & Divorce
We have significant litigation experience in all family law and divorce matters, including custody issues, asset valuation and division, and child support and alimony.
Admitted to Practice in MA, NH and CA
Experienced attorneys who listen and advocate for you

At Kazarosian Costello,
we combine experience, knowledge and a record of success that is hard to find in other firms. In addition to our vast legal experience, the attorneys in our firm are committed to leadership at state and county bar associations. Boasting current and past presidents of bar associations including the Massachusetts Bar Association, Massachusetts Academy of Trial Attorneys, the Essex County Bar Association, and the Haverhill Bar Association, the firm has developed strong relationships in the legal community with both bench and bar.
Licensed to practice in Massachusetts, New Hampshire, Maine, and California, our team provides the skilled, individualized representation our clients deserve.