Business Details
45 Years
experience
Nationwide Structural Engineering Solutions
Founded in 1981, O'Donnell & Naccarato has evolved from a three-person structural engineering firm into a nationally recognized leader with over 100 dedicated professionals across nine offices. Our unwavering commitment to core valuescommunication, quality, innovation, growth, and collaborationdrives our approach to every project. We specialize in delivering comprehensive structural engineering solutions for buildings across all sectors of the construction industry, combining local expertise with a national reach. Our team's depth of experience and creative problem-solving capabilities enable us to tackle complex challenges in commercial high-rises, healthcare facilities, cultural landmarks, and more. As an employee-owned firm, nearly all staff are members of our Employee Stock Ownership Plan (ESOP), fostering a culture of accountability, pride, and long-term client partnerships.We maintain technical excellence through advanced tools like BIM and REVIT, while our 49-state professional engineer registrations ensure broad regulatory expertise. With a track record of over 1,000 annual projects and $6+ billion in annual construction value, we prioritize client satisfaction through tailored solutions that maximize asset value. Our history of innovation includes pioneering the Girder-Slab structural system and developing industry-leading faade assessment protocols. Today, we continue to expand strategically, opening new offices in key markets while maintaining our founding commitment to engineering precision and community impact.
Services
Structural Engineering
Structural Design
Parking Design
Specialty Engineering
Building Renovation
Faade Assessment
BIM Modeling
Healthcare Structures
Educational Facilities
Details
- Year established: 1981
Highlights and features
- 40+ years of structural engineering experience across all construction sectors
- Employee-owned firm with 96% staff retention and deep institutional knowledge
- Pioneers of innovative construction methods like the Girder-Slab system
- Registered professional engineers in all 49 states requiring licensure
- Strategic national office network enabling localized project execution
Services
Structural Engineering
Our structural engineering services combine technical expertise with innovative problem-solving for commercial, healthcare, and cultural projects. We deliver customized solutions that ensure safety, durability, and cost-effectiveness while meeting unique project requirements. Our engineers utilize advanced BIM technology and maintain registrations in 49 states to support nationwide projects.
Specialty Engineering
We provide specialized engineering for complex structures including precast concrete systems, cold-formed steel components, and aquatic facilities. Our team's experience with unique materials and challenging environments enables creative solutions for technically demanding projects across diverse market sectors.
Building Renovation
Our renovation services focus on extending building lifespans while enhancing functionality and safety. We conduct comprehensive assessments and develop adaptive reuse strategies that maintain historical integrity while meeting modern performance standards and code requirements for commercial and institutional properties.
BIM Modeling
We employ Building Information Modeling (BIM) to create detailed 3D representations of structural systems. This technology enhances design accuracy, improves interdisciplinary coordination, and streamlines construction processes for complex projects across all market sectors.
Healthcare Structures
Our healthcare engineering expertise covers hospitals, research centers, and specialty clinics. We design structures that meet stringent safety regulations, accommodate advanced medical equipment, and create healing environments while maintaining strict budget and timeline parameters for critical healthcare infrastructure.
People
Bill O'Donnell
Founder
Co-founder with 40+ years of structural engineering experience. Established firm's commitment to client relationships and technical excellence. Pioneered early adoption of CAD technology in 1988 and BIM implementation in 2006.
Pete Naccarato
Founder
Co-founder who shaped firm's collaborative culture and quality focus. Instrumental in developing early high-rise expertise through projects like Wyndham Atlantic City. Established long-term client partnership principles still guiding the firm today.
Questions
What construction sectors does O'Donnell & Naccarato specialize in?
We serve all major construction sectors including commercial high-rises, healthcare facilities, educational institutions, cultural landmarks, industrial complexes, and senior living communities.
Are your engineers licensed nationwide?
Yes, our professional engineers hold registrations in all 49 states requiring structural engineering licensure, enabling seamless execution of multi-jurisdictional projects.
How does your employee ownership model benefit clients?
Our ESOP structure aligns employee and client interests, fostering greater accountability, technical innovation, and long-term commitment to project success through shared ownership principles.
What innovative construction methods have you developed?
We pioneered the Girder-Slab system for rapid construction and developed advanced façade assessment protocols following Philadelphia's 1980s building safety initiatives.
How do you handle complex renovation projects?
Our team conducts comprehensive structural assessments and develops adaptive reuse strategies that balance historical preservation requirements with modern performance standards and code compliance.
Where are your offices located?
We have nine strategically located offices in Philadelphia, Mountainside (NJ), New York City, Indianapolis, Miami, Orlando, Columbus (OH), Cleveland, and Pittsburgh.
