Welcome to Costello, Brennan and DeVidas, P.C. – Costello, Brennan and DeVidas, P.C. – Fairfield, CT Costello, Brennan and DeVidas, P.C. offers a full range of legal representation to meet your needs-from complex transactions to personalized services for individuals and families. Our legal team is comprised of individuals who share our commitment to quality and continue to stay at the forefront of developments in their areas of practice. We work closely with our clients to protect their rights and achieve the best possible outcome.