At Costello, Brennan, DeVidas, Sasso and Sinclair, P.C., we offer a full spectrum of legal services tailored to meet the unique needs of our clients. From complex legal transactions to the more personalized legal services required by individuals and families, we are dedicated to delivering top-quality legal representation. Our legal professionals are deeply committed to staying at the cutting edge of their practice areas, ensuring they can provide the most up-to-date and effective solutions. We work closely with each client to understand their needs and objectives, striving to protect their interests at every turn. Whether we are managing corporate affairs or advising families through important personal legal matters, we always prioritize achieving the best possible outcomes. Our team is known for its high standards of professionalism, integrity, and expertise, and we work tirelessly to protect our clients’ rights and advocate on their behalf. With a focus on results and a deep understanding of the law, we provide trusted counsel and dependable legal representation. The success of our clients is our priority, and we pride ourselves on the long-lasting relationships we build through our commitment to their goals.
Highlights and features
- Matrimonial Law
- Real Estate
- Worker's Comp
- Criminal Law
- Probate Law
- Juvenile Law
- Personal Injury
Payment methods
- Cash
- Debit cards
- Credit cards
Services
We are dedicated to helping clients resolve family disputes with minimal expense and distress. Our goal is to reach a resolution that aligns with our clients' interests outside of court whenever possible. If court action is required, Costello, Brennan, Devidas, Sasso, & Sinclair, P.C. has substantial experience in family law litigation to advocate effectively for our clients. 
Chapter 568 of the Workers' Compensation Act ensures continued income, medical care, and benefits for anyone hurt at work in Connecticut. While the law clearly defines these rights, sometimes employers or their insurers may not fully comply. If you encounter issues, Costello, Brennan, Devidas, Sasso & Sinclair, P.C. is here to support you. 
Facing criminal charges can be a daunting experience, but you don’t have to go through it alone. If you’ve been charged, take steps to protect yourself by selecting a defense strategy you can rely on. At Costello, Brennan, Devidas, Sasso, & Sinclair, P.C., we build strong, personalized defense strategies. Our firm has represented clients in cases involving DUI/DWI, traffic violations, sex crimes, violent crimes, white-collar offenses, and juvenile crimes. When possible, we assist with record expungement or sealing to reduce the lasting impact of criminal charges. 
If you're injured and in need of help, you need an attorney who will stand up to insurance companies and opposing lawyers. Costello, Brennan, Devidas, Sasso, & Sinclair, P.C. specializes in personal injury law and is committed to defending injured clients. Our attorneys have proven themselves as top trial lawyers who will go to court to secure the compensation you deserve. Led by Kieran Costello, Esq., Christopher Brennan, Esq., and Claire DeVidas, Esq., our team delivers a range of legal services with a strong record of successful jury verdicts in personal injury cases, from premises liability to automotive accidents. Let our highly skilled team of personal injury attorneys help you reclaim what you’ve lost, whether income, property, or physical health.
People
Kieran J. Costello Esq
Kieran J. Costello, Esq. holds memberships in multiple prominent legal associations, such as the Connecticut Trial Lawyers Association, Connecticut Bar Association, American Bar Association, and the American Association for Justice. In addition to his practice, he is Co-Chair of the Family Law Section of the Greater Bridgeport Bar Association, and he is involved in the Elder Law Committee and the Trust and Estates Committee. Mr. Costello has shared his knowledge as an Adjunct Professor of Law at Housatonic Community College since 1993, with previous teaching roles at Albertus Magnus College and the University of Bridgeport.
Christopher P. Brennan Esq
Specializing in personal injury, family law, and criminal law, Attorney Brennan has developed a wealth of experience as a trial lawyer. He has represented clients in thousands of cases across various legal fields, including civil, family, and criminal law, as well as workers' compensation cases throughout the state. Attorney Brennan’s career began as a contract specialist with Otis Elevator, a leading company in the elevator industry, where he was involved in contract negotiations and labor litigation. Afterward, he worked at Esty and Buckmir, LLC, where he specialized in workers' compensation and insurance defense for major companies.
Claire DeVidas Esq
Since joining Costello, Brennan and DeVidas, P.C. in 2008, Claire DeVidas has focused her practice on family law, managing cases involving divorce, child custody, alimony, child support, restraining orders, and post-judgment modifications. With experience representing high net worth individuals and those with intricate compensation structures, Claire brings unique expertise to her clients. Prior to her legal career in family law, Claire served as an Assistant District Attorney in New Orleans, where she prosecuted violent crimes like domestic violence. This experience gives her valuable insights into abusive relationships, providing an advantage to her clients in court. Additionally, she offers divorce mediation services aimed at helping couples avoid costly litigation and protect their financial resources.
Reviews (14)
Frank Marini
Nov 02, 2024
Asia McRae-Johnson
Nov 11, 2021
I recently had the pleasure of working with Linsey A. DeDomenico, Esq. Linsey took over my case after another attorney abandoned me. From day one she stepped right in, cut through the red tape and challenges, navigated my case as if she had been there from the beginning, kept my case on track, and was a strong advocate for me and my family. She is detail oriented making sure every base is covered.
She is patient and worked hard for a positive outcome. Linsey was able to accomplish in mere months what the other attorney could not/had not accomplished in almost a year. She worked tirelessly and maintained a calm, positive and professional demeanor at all times. Thank you, Lindsey.
She is patient and worked hard for a positive outcome. Linsey was able to accomplish in mere months what the other attorney could not/had not accomplished in almost a year. She worked tirelessly and maintained a calm, positive and professional demeanor at all times. Thank you, Lindsey.
Angela Grasso
Jul 29, 2021
I had the immense pleasure of working with Kieran Costello & Sean Plumb throughout my divorce process. Divorce is difficult enough on any individual but both Kieran & Sean couldn't have been more professional, knowledgeable & encouraging throughout the process (Kieran's sense of humor kept my spirits up as well)! They were there by my side & kept me updated every step of the way! The entire staff at this office is wonderful. I would HIGHLY recommend their services to anyone going through a difficult/challenging divorce. They will not disappoint!
Stephanie Johnson
Mar 31, 2020
Alicia Mills
Aug 03, 2017
Carolyn Baker
Apr 23, 2017
Claire DeVidas defended me when my ex decided to file a motion to reduce his alimony payments. It was not easy but Claire was able to show that my ex was voluntarily lowering his income just to pay me less and won the hearing. I would recommend Claire to anyone the has to face the ugliness of the family courts, great attorney.
Jonathan Miranda
Mar 31, 2017
Chris Brennan worked on my personal injury case. He took the time to explain the process, the steps required to resolve my case and kept me informed. I had a great deal of confidence in Chris, he resolved my claim to my satisfaction. I highly recommend Chris to anyone looking for legal representation for a personal injury claim.
Alissa Pepe
Sep 28, 2016
I first consulted with Kieran Costello, who was humorous but very knowledgeable. He then handed my case to Attorney Mitchell Teta. Attorney Teta has been amazingly helpful and assertive in dealing with my child custody case. He is honest and direct, and continues to help me fight in court for the best interest of my child. I can't thank him enough for all he has done. Highly recommended firm and law office.
Teresa Gold
Jul 31, 2016
Sue Hart
Apr 09, 2016
Michelle Williams
Jul 24, 2015
I want to thank Kieran Costello and his team at Costello, Brennan and DeVidas. Kieran helped me get through the most difficult time in my life. He and his team were always fast to respond to my questions and gave me good advice at a time that when I found it difficult to think straight. He always took the time to explain the process to me. Kieran went out of his way to get the other side to work with us and come to a settlement.
He worked to bring closure and expedite the divorce. I never felt as though I was just an account at his firm. Not only did Costello, Brennan and DeVidas handle all of the issues involved with my divorce, they treated me with kindness, patience and understanding. Kieran truly helped me to get back on my feet and re-start my life. I wouldn't want anyone to have to go though the pain of divorce, but if you find yourself in the same position that I faced, I highly recommend Kieran to help you get through it.
He worked to bring closure and expedite the divorce. I never felt as though I was just an account at his firm. Not only did Costello, Brennan and DeVidas handle all of the issues involved with my divorce, they treated me with kindness, patience and understanding. Kieran truly helped me to get back on my feet and re-start my life. I wouldn't want anyone to have to go though the pain of divorce, but if you find yourself in the same position that I faced, I highly recommend Kieran to help you get through it.
Paul White
May 15, 2015
I was injured at work and was out for many months. I reached out to a close friend who gave me the name of a respectable law firm called Costello, Brennan and DeVidas, P.C. He told me to ask for Chris Brennan saying that he's a young, bright gentleman who is well respected and will waste no time in dealing with the adjuster to help me collect the wages that are due to me.
I called and spoke to Chris explaining my situation and he had me come to his office the very next day for a consult. The end result is that Chris delivered for me and he did this in a timely fashion. He not only had the insurance company bring me current money wise but he was also instrumental in helping me obtain the OK for the surgery that I desperately needed. Lets face one important fact here, weather your going through a divorce or you've been injured on the job or otherwise you want to know that the people or person you've hired to represent you in the court room is a competent and savvy individual.
If your unsure as to who could help you in a tight situation that you never asked nor expected to be in and your going to thumb through a phone book to pick a lawyer. Don't, call Costello, Brennan and DeVidas and let them prove to you like they proved to me that they can and will live up to their reputation as a class" A" law firm.
I called and spoke to Chris explaining my situation and he had me come to his office the very next day for a consult. The end result is that Chris delivered for me and he did this in a timely fashion. He not only had the insurance company bring me current money wise but he was also instrumental in helping me obtain the OK for the surgery that I desperately needed. Lets face one important fact here, weather your going through a divorce or you've been injured on the job or otherwise you want to know that the people or person you've hired to represent you in the court room is a competent and savvy individual.
If your unsure as to who could help you in a tight situation that you never asked nor expected to be in and your going to thumb through a phone book to pick a lawyer. Don't, call Costello, Brennan and DeVidas and let them prove to you like they proved to me that they can and will live up to their reputation as a class" A" law firm.
Ovy Saldanha
Mar 14, 2015
I have worked with this firm for a few years. I can say that i have been extremely pleased with their services. They have fought for me and my children and have produced outstanding results every time. The advise I get is truly valuable and always in my best interests. They put their clients needs first and work tirelessly to achieve the goals we set out to achieve.
Both Kieran and Claire are simply amazing, their work ethic, integrity, honesty, conscientiousness are above reproach. They keep in regular contact with their clients. Thanks to Kieran and Claire, me and my children are in a much better situation, emotionally and financially than I was before i engaged their services. These guys are The Best, Top notch attorneys period!
Both Kieran and Claire are simply amazing, their work ethic, integrity, honesty, conscientiousness are above reproach. They keep in regular contact with their clients. Thanks to Kieran and Claire, me and my children are in a much better situation, emotionally and financially than I was before i engaged their services. These guys are The Best, Top notch attorneys period!
Lori M.
Mar 03, 2015
There is no room for second best when battling divorce and domestic violence. It can be one of the most challenging experiences of your life. I count my blessings each day and thank God that Kieran Costello is on my side. His compassion, intelligence, and commitment to justice has and will continue to ensure the safety and well being in every way of both my child and myself.
Not only can you trust that he will help you to achieve your desired outcome, you can trust that he and his staff are going to give it their all each step of the way. Only the best attorney will always ensure a return phone call before the end of the day and not only make sure your concerns are addressed, but end the conversation with a blessing. God Bless you Kieran and staff!
Not only can you trust that he will help you to achieve your desired outcome, you can trust that he and his staff are going to give it their all each step of the way. Only the best attorney will always ensure a return phone call before the end of the day and not only make sure your concerns are addressed, but end the conversation with a blessing. God Bless you Kieran and staff!