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Monday 8:30am - 5:30pm Tuesday 8:30am - 5:30pm Wednesday 8:30am - 5:30pm Thursday 8:30am - 5:30pm Friday 8:30am - 5:30pm

O'Donnell & Naccarato

Name: O'Donnell & Naccarato
Address: 701 Market Street, Ste 6000, Philadelphia, PA, 19106, US
Telephone: +12159253788
Price range: $

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Creative Structural Engineers Operating Nationally to Support the Entire Building Life Cycle

Tracing its roots to 1954, O’Donnell & Naccarato, a consulting structural engineering firm with facade restoration, parking consultation and garage restoration divisions, has been recognized and awarded for its expertise in designing and managing projects of all sizes, types and levels of complexity.

11/12/2026

As a proud annual sponsor of AIA Cleveland, we were pleased to join architects, designers, and industry partners from across Northeast Ohio at this year’s Design Awards.

The event showcased outstanding work and recognized the professionals whose creativity and dedication shape the built environment. Congratulations to all of the honorees, and thank you to AIA Cleveland for another great night celebrating design and the impact of architecture in our communities.

11/10/2026

We’re excited to welcome Goldstein-Milano Structural Engineers (GMSE) to O’Donnell & Naccarato!

Based in Reading, Massachusetts, GMSE brings a seven-person team, an established presence in New England and significant experience across multiple sectors, including its nationally recognized work on proton therapy facilities.

The acquisition expands O&N’s national footprint to 11 offices and strengthens our capabilities in specialized healthcare environments while establishing our presence in the Boston market.

We look forward to growing together!

Read the full announcement: https://www.o-n.com/news/odonnell-naccarato-acquires-goldstein-milano-structural-engineers/

10/29/2026

Pennsylvania's hospitals are evolving, and not just through new buildings.

Earlier this week at Bisnow’s Healthcare Real Estate Summit, O’Donnell & Naccarato CEO Anthony Naccarato moderated the panel, "The Hospital Reinvented: Campus Modernization, Capacity & the Next Generation of Acute Care," exploring how health systems are replacing aging infrastructure, expanding capacity, and planning facilities for increasingly complex, technology-enabled care.

The conversation highlighted one of the industry's most complex challenges: delivering major capital projects while maintaining uninterrupted patient care and daily operations on active hospital campuses.

Thank you to Bisnow for bringing together healthcare and real estate leaders for this important conversation, and to our fellow panelists for sharing their insights and perspectives on the future of hospital development.

10/21/2026

October is Employee Ownership Month!

At O’Donnell & Naccarato, being employee-owned means our employees have a stake in the company through our Employee Stock Ownership Plan (ESOP). It’s a shared investment in O&N’s future and one more reason we take pride in the work we do, the relationships we build, and O&N’s continued success.

10/13/2026

O&N joined the American Society of Civil Engineers (ASCE) team for CANstruction Pittsburgh, helping bring this year’s design to life with more than 2,200 cans.

The annual competition challenges teams to build creative structures out of canned food, which is donated to local hunger relief organizations after the exhibition. It’s a great way to bring the AEC community together for a good cause!

10/08/2026

Our team recently attended ICRI Metro NY Demo Day, a hands-on event focused on architectural terra cotta repair and restoration.

The event gave our team the opportunity to see materials and repair techniques firsthand, learn from experts across the industry, and connect with manufacturers about their products and applications. It also provided valuable time to connect with industry peers and exchange knowledge and ideas.

Thanks to Skyline Restoration for hosting and to ICRI Metro NY for organizing a great event!

10/07/2026

A good team knows how to work hard and how to step away from the desk once in a while. ⛳

O'Donnell & Naccarato recently headed to Topgolf for an afternoon of golf and friendly competition. From solid swings to… some very questionable ones, there was no shortage of fun.

Our team is a big reason we love coming to work, and days like this are a great reminder of why. Thanks to everyone who came out!

09/29/2026

We’re honored to share that the Alan Horwitz “Sixth Man” Center has received a Pennsylvania Historic Preservation Award for Leadership in Public Impact.

O’Donnell & Naccarato was proud to be part of the project team that transformed six historic warehouse buildings in Philadelphia’s Nicetown neighborhood into a vibrant new home for Philadelphia Youth Basketball.

The adaptive reuse preserves important elements of the site’s industrial history while creating space for basketball, education, community programs and other resources for local youth and residents.

It’s exciting to see this project recognized for the lasting impact it is making in the community. Congratulations to the entire project team and to all of this year’s Pennsylvania Historic Preservation Award recipients!

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09/22/2026

We're thrilled to share that O'Donnell & Naccarato was honored with the SNJDC Structural Engineering and Design Award at Friday's Awards Luncheon!

This award recognizes structural engineering firms making a significant, lasting contribution to Southern New Jersey's built environment, and we're grateful to be recognized alongside so many talented professionals and organizations helping shape our region.

O&N Chairman & CEO Anthony Naccarato accepted the award on behalf of our team, recognizing the hard work and dedication of the employees who made this achievement possible.

A special thank you to Larry Merighi of MMPF Architects () for nominating us, and to the Southern New Jersey Development Council () for the important work they do throughout the region.

📷: SNJDC

09/09/2026

Demolition is nearing completion at The Fashion Mall at Keystone in Indianapolis as the southeastern section of the shopping center undergoes a major transformation. The project will renovate a portion of the former three-story Saks Fifth Avenue building while adding new one- and two-story retail space.

O’Donnell & Naccarato is providing structural engineering services for the redevelopment, which will introduce a new mix of retail, dining and lifestyle destinations to the campus.

Address

701 Market Street, Ste 6000
Philadelphia, PA
19106

Opening Hours

Monday	8:30am - 5:30pm
Tuesday	8:30am - 5:30pm
Wednesday	8:30am - 5:30pm
Thursday	8:30am - 5:30pm
Friday	8:30am - 5:30pm

Telephone

+12159253788

Website

http://www.o-n.com/

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