Insights

Growth momentum O'Donnell & Naccarato has expanded from a tiny local shop to a national structural engineering firm with multiple offices and a growing headcount, indicating a strong sales-opportunity environment for large-scale healthcare and campus projects across the United States.

Strategic partnerships Recent collaboration with TLC Engineering Solutions and other firms on major projects signals openness to joint ventures and partnerships. This presents a path for cross-sell of structural services to complementary design and construction players.

Healthcare expansion Significant healthcare project activity, including the Geisinger Wyoming Valley Medical Center expansion, points to sustained demand in healthcare facilities engineering. Target hospitals and health systems for ongoing structural coordination and upgrade work.

Geographic growth New offices in North Carolina and the Miami presence indicate regional expansion. Prospect for targeted business development in growing markets with large public and private construction pipelines.

Leadership and talent signals Promotions to principal and senior leadership, plus appointment of a new Miami director, suggest a ramping up of capabilities and client-facing capacity. This creates opportunities for pursuing larger, multi-office projects and long-term retainer-type engagements.

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O'Donnell & Naccarato Tech Stack

O'Donnell & Naccarato uses 8 technology products and services including WordPress, MySQL, Shopify, and more. Explore O'Donnell & Naccarato's tech stack below.

Media & News

O'Donnell & Naccarato's Email Address Formats

O'Donnell & Naccarato uses at least 4 email formats:
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

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.

How much revenue does O'Donnell & Naccarato generate?

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As of August 2026, O'Donnell & Naccarato's annual revenue is estimated to be $50M - $100M.

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 August 2026, O'Donnell & Naccarato has approximately 112 employees across 2 continents, including North America and South America. Key team members include President: D. S., President: N. and President Emeritus - Principal: N. C. 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 WordPress, MySQL, Shopify, Microsoft 365, SendGrid, Google Cloud, jQuery Migrate and HTTP/3.

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 logo

O'Donnell & Naccarato

Engineering ServicesPennsylvania, United States51-200 Employees

O'Donnell & Naccarato is a structural engineering practice based in Philadelphia, Pennsylvania. Founded in 1981 as a three-person operation, it has grown into a national firm with ten offices across the United States. The firm delivers structural solutions for buildings across all construction market sectors on projects located nationwide.

Its work spans diverse building types and market segments, reflecting a nationwide reach in the United States. The company is positioned as a national provider of structural engineering services within the industry, emphasizing collaborative design and technical reliability. In 2026 the firm expanded its footprint with the opening of an office in Durham, United Kingdom, signaling geographic growth beyond its domestic market.

Section iconCompany Overview

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

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