Costello, Brennan, DeVidas, Sasso and Sinclair, P.C.

Law Firm in Fairfield, CT
Law Firm in Fairfield, CT As the Number 1 law firm to protect your rights, our lawyers handle cases for Matrimonial (Divorce & Family), Criminal Law, Probate and Juvenile Law, Personal Injury, Workers Compensation and Real Estate Transactions.
Highlights & Specialties
  • Matrimonial Law
  • Real Estate
  • Worker's Comp
  • Criminal Law
  • Probate Law
  • Juvenile Law
  • Personal Injury

Contact Details

Address
1238 Post Rd
Fairfield, CT
06824
Phone
Driving Directions

Products & Services

Matrimonial Law
read moreIt is our firm policy to try earnestly to resolve family disputes for our clients with as little anguish and expense as possible. Accordingly, every effort is made to reach a negotiated resolution that is satisfactory to our clients. In some cases, court intervention is necessary. At Costello, Brennan, Devidas, Sasso, & Sinclair, P.C., we have extensive trial experience in family matters.
Workers Compensation
read moreChapter 568 of the Workers Compensation Act guarantees continuing income, medical care, and beneficiary benefits for anyone injured on the job in the State of Connecticut. While the law is quite clear about your rights for on the job injuries, your employer or their insurance company may not be as accommodating as the law requires. If that happens, Costello, Brennan, Devidas, Sasso, & Sinclair, P.C., can help.
Criminal Law
read moreIt is normal to feel scared and alone when facing felony and misdemeanor charges. If you have been charged with a crime, calm some of your fears by giving yourself reliable defense options. At Costello, Brennan, Devidas, Sasso, & Sinclair, P.C., we build strong defense strategies.
Personal Injury
read moreWhen you are injured, and in need of help, you need an attorney who can go head to head with insurance companies and attorneys. Costello, Brennan, Devidas, Sasso, & Sinclair, P.C. practices personal injury law and is dedicated to protecting an injured client. Our attorneys have firmly established themselves as prominent trial attorneys who are not afraid to go to court to get their clients the compensation they deserve.
Kevin Meehan
Mar 03, 2022
Fantastic experience working with Claire and Kieran. They provided extraordinary guidance along the way and always welcomed my questions and thoughts. Incredibly patient but more importantly, they were consummate professionals and highly experienced. They know their stuff and aggressively act on the client's behalf.
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!
John Oberson
May 17, 2021
In a contentious divorce proceeding, I needed a robust litigation team. Costello, Brennan, DeVidas, Sasso and Sinclair was just what I needed. Attorney Kieran Costello, with his in-depth legal knowledge and Attorney Edward "Skip" Sinclair, with both his legal knowledge as well as his financial background, brought the case to a successful conclusion. I would recommend CBDSS to anyone.
Tyler Morrissey
May 03, 2020
I hired Kieran Costello to represent me in my divorce and I couldn't be happier. He is very responsive and kept me informed throughout the case. Kieran is very knowledgeable and, in my opinion, is the best in the field. Before I hired Kieran I wasn't sure how I was going to be able to get through the process, but with his advice I was able to obtain a very favorable result that I didn't think was possible.
Joanne Stevens
Apr 03, 2020
Kieran Costello is the only lawyer I trust to represent me in my custody battle. I was in the worst situation possible before I met Kieran and I thought I was really out of options and scared that my relationship with my children was gone. I highly recommend Kieran. He will fight for you.
Alicia Mills
Aug 03, 2017
Claire DeVidas represented me recently in my divorce. I was very happy with her attention to my case and how she went above and beyond to keep me informed through the whole process. She really cared about me. I highly recommend her.
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.
Greyson Schwing
Jul 12, 2016
I have enjoyed dealing with Kieran Costello over the last few years. I always appreciate his direct and professional manner and his staff and partners are always courteous and professional. I recommend Costello, Brennan, and DeVidas with confidence to anyone needing a good attorney.
Karen Munson
May 04, 2016
I would like to say that Attorney Mitchell Teta is a great attorney. He really helped me with my case.
Sue Hart
Apr 09, 2016
I interviewed several law firms and was glad to have chosen Costello, Brennan and DeVidas. Working with Attorney Teta and Attorney Sasso I always felt informed and protected. I highly recommend this Firm.
Richard Breglia
Apr 09, 2016
I have referred Christopher Brennan to many of my clients. He has successfully closed several Real Estate transactions and has always delivered top notch service. Past clients have also retained Chris for evictions, misc. litigation and divorce with the same positive results. He is a diligent worker and always responds in a timely manner. I have only received positive feedback from my clients and will continue to refer Chris clients in the future.
Paola Colombo
Aug 30, 2015
The Costello, Brennan and DeVidas, P.C. office, specifically Anthony Sasso, Esq., was extremely helpful and attentive helping me through a personal matter during a difficult time. The results we super positive and the stress was minimal. I recommend.
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.
Frank Marini
Nov 02, 2024
Chris Brennan represented me for a divorce. He guided me through the entire process and kept me informed every step of the way. He protected my rights and I was very happy with the result. I would recommend this great attorney to anyone going through this kind of situation.
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.
Kate Larson
Sep 04, 2017
I used Chris Brennan for my divorce case and I would highly recommend him! He was attentive, cost efficient and stood up to my bully ex.
Anna Gustava Brady
Jun 04, 2017
Divorce is, almost without exception, a difficult and painful process. I am incredibly grateful to Kieran Costello, Megan Leffard, and everyone at Costello, Brennan, and DeVidas for guiding me through with expertise and compassion. They were professional, reliable, and communicative. I was never left wondering what was happening or why. When I reached out to give or receive information, responses came in a timely manner.

I have recommended Kieran to a friend and will continue to recommend Kieran and Costello, Brennan, and DeVidas without hesitation. As my marriage deteriorated, I prayed for a miracle and found one. Many thanks for helping me navigate my way out of my previous situation and into my new life.
Tom Goodwin
May 01, 2017
I hired Chris after getting seriously injured in a work place accident. He was able to fight the worker's comp. commission in order to reach a very favorable settlement for me. I highly recommend Attorney Brennan.
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.
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!

Key People

Kieran J. Costello Esq
read moreKieran J. Costello, Esq. is an active member of several prestigious legal organizations, including the Connecticut Trial Lawyers Association, Connecticut Bar Association, American Bar Association, and American Association for Justice. He serves as Co-Chair of the Family Law Section of the Greater Bridgeport Bar Association and participates in the Elder Law Committee of the Connecticut Bar Association, as well as the Trust and Estates Committee. Since 1993, Mr. Costello has also been an Adjunct Professor of Law at Housatonic Community College. His teaching experience includes positions as a Professor of Law at Albertus Magnus College and as an Associate Professor at the University of Bridgeport.
Christopher P. Brennan Esq
read moreAttorney Brennan has extensive experience in personal injury, family law, and criminal law, with a strong background in litigation. Over the years, he has litigated thousands of civil, family, and criminal cases, as well as participating in numerous workers' compensation hearings statewide. Before practicing law, he worked as a contract specialist for Otis Elevator, a subsidiary of United Technologies, specializing in contract negotiations and labor disputes. He then moved to Esty and Buckmir, LLC, an insurance defense firm, focusing on workers' compensation and general insurance defense cases.
Claire DeVidas Esq
read moreSince 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.
Hours of Operation
Monday08:30 AM÷05:30 PM
Tuesday08:30 AM÷05:30 PM
Wednesday08:30 AM÷05:30 PM
Thursday08:30 AM÷05:30 PM
Friday08:30 AM÷05:30 PM
SaturdayClosed
SundayClosed
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