Founded in 2015 by O&N Principals, O’Donnell & Naccarato Structural Engineers is the Manhattan-based corporate affiliate of O’Donnell & Naccarato, Inc. that serves structural design and restoration projects in New York State. Seamless collaboration allows for nationwide service and access to more than 38 years of engineering experience.

40 Worth Street, Suite 301
New York, NY 10013
Phone: (646) 315-7197
Email: info@o-n.com

In 2019, O’Donnell & Naccarato established its Carmel, Indiana office with the acquisition of McComas Engineering. Since 1991, McComas, now known as McComas / O’Donnell & Naccarato, has earned a reputation for managing complex projects across the Midwest and beyond. The office is led by Vice President Rod McComas, PE, SE and Regional Director Tom Miltner, PE.

1717 East 116th Street, #200
Carmel, IN 46032
Phone: (317) 580-0402
Email: info@o-n.com