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O’Donnell & Naccarato Offices

Philadelphia, Pennsylvania

Established in 1981, O’Donnell & Naccarato’s Philadelphia headquarters is the firm’s largest office and acts as a hub for national structural design and restoration projects.

Mountainside, New Jersey

Established in 2013, O’Donnell & Naccarato’s Mountainside office primarily serves North Jersey projects and is located 20 miles west of Manhattan in Union County, one of the state’s most populated regions.

New York, New York

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 40 years of engineering experience.

Indianapolis, Indiana

 In 2019, O’Donnell & Naccarato acquired the Indiana-based engineering firm 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 Principal Tom Miltner, PE.

  • Three Parkwood Crossing, 450 East 96th Street, Suite 175, Indianapolis, IN 46240

Miami, Florida

In 2022, O’Donnell & Naccarato acquired the Miami-based engineering firm Douglas Wood Associates.  Since 1993, DWA, now known as Wood/O’Donnell & Naccarato, has earned a reputation for technical excellence, innovative solutions and responsive service.  The office is led by Principal Douglas Wood, PE and Senior Associates Navid Nemati, Ph.D., PE, and Marcos Perez, PE.

Orlando, Florida

Established in 2022, O’Donnell & Naccarato’s Orlando office opened to service our growing business in north and central Florida, one of the country’s leading commercial real estate locations.

Columbus, Ohio

Established in 2023, O’Donnell & Naccarato expanded our national footprint with a structural engineering firm in Columbus, Ohio. Below is the contact and project information of the Columbus office of O’Donnell & Naccarato.

  • P.O. Box 12400, Columbus, OH 43212