Insights

Rapid Expansion O'Donnell & Naccarato has recently expanded internationally with new offices in Durham, United Kingdom, and Northern Europe, indicating a strategic growth plan that could open opportunities for partnerships or projects in the European market.

Leadership Growth The promotion of multiple senior leaders, including principals and PE designations, suggests a company investing in strengthening its leadership team, which may require additional support, consulting, or innovative solutions to support their evolving strategic objectives.

Diverse Project Portfolio With projects spanning all construction market sectors across the United States and a history of collaboration with institutions like Our Lady of Lourdes, the firm’s portfolio indicates potential for engagement in large-scale, complex structural projects including public infrastructure and institutional buildings.

Strong Financial Position Operating with revenues between $50 million and $100 million and growing from a small start, O'Donnell & Naccarato presents a stable financial profile, making them a promising prospect for high-value engineering services and strategic partnerships.

Innovation & Recognition The firm’s recognition through awards like the Rhoda and Permar Richards Award and its focus on innovative design solutions highlight an openness to collaboration with firms that provide cutting-edge technology or sustainable engineering practices to enhance their projects.

O'Donnell & Naccarato Tech Stack

O'Donnell & Naccarato uses 8 technology products and services including MySQL, Vue.js, Element UI, and more. Explore O'Donnell & Naccarato's tech stack below.

  • MySQL
    Database
  • Vue.js
    Javascript Frameworks
  • Element UI
    Javascript Frameworks
  • jQuery
    Javascript Libraries
  • jQuery Migrate
    Javascript Libraries
  • Priority Hints
    Performance
  • MediaElement.js
    Video Players
  • Plesk
    Web Hosting

Media & News

O'Donnell & Naccarato's Email Address Formats

O'Donnell & Naccarato uses at least 1 format(s):
O'Donnell & Naccarato Email FormatsExamplePercentage
FLast@o-n.comJDoe@o-n.com
91%
Last@o-n.comDoe@o-n.com
4%
First.Last@o-n.comJohn.Doe@o-n.com
3%
First@o-n.comJohn@o-n.com
2%

Frequently Asked Questions

Where is O'Donnell & Naccarato's headquarters located?

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O'Donnell & Naccarato's main headquarters is located at 701 Market Street Suite 6000 Philadelphia, Pennsylvania 19106 United States. The company has employees across 1 continents, including North America.

What is O'Donnell & Naccarato's phone number?

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You can contact O'Donnell & Naccarato's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is O'Donnell & Naccarato's official website and social media links?

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O'Donnell & Naccarato's official website is o-n.com and has social profiles on LinkedIn.

What is O'Donnell & Naccarato's NAICS code?

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O'Donnell & Naccarato's NAICS code is 5413 - Architectural, Engineering, and Related Services.

How many employees does O'Donnell & Naccarato have currently?

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As of April 2026, O'Donnell & Naccarato has approximately 105 employees across 1 continents, including North America. Key team members include Chief Financial & Human Resource Officer: M. P.President: D. M.President: D. S.. Explore O'Donnell & Naccarato's employee directory with LeadIQ.

What industry does O'Donnell & Naccarato belong to?

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O'Donnell & Naccarato operates in the Engineering Services industry.

What technology does O'Donnell & Naccarato use?

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O'Donnell & Naccarato's tech stack includes MySQLVue.jsElement UIjQueryjQuery MigratePriority HintsMediaElement.jsPlesk.

What is O'Donnell & Naccarato's email format?

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O'Donnell & Naccarato's email format typically follows the pattern of FLast@o-n.com. Find more O'Donnell & Naccarato email formats with LeadIQ.

When was O'Donnell & Naccarato founded?

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O'Donnell & Naccarato was founded in 1981.

O'Donnell & Naccarato

Engineering ServicesPennsylvania, United States51-200 Employees

O’Donnell & Naccarato’s structural engineering practice has grown from a 3-person company in 1981 into a national firm of over 120 people spread over ten offices. O&N provides structural solutions for buildings across all construction market sectors with projects located throughout every part of the United States.

Section iconCompany Overview

Headquarters
701 Market Street Suite 6000 Philadelphia, Pennsylvania 19106 United States
Phone number
Website
o-n.com
NAICS Code
5413 - Architectural, Engineering, and Related Services
Founded
1981
Employees
51-200

Section iconFunding & Financials

  • $50M$100M

    O'Donnell & Naccarato's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $50M$100M

    O'Donnell & Naccarato's revenue is estimated to be in the range of $50M$100M

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