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Pennoni is a multidisciplinary consulting engineering firm founded in 1966 by Celestino R. 'Chuck' Pennoni. The firm provides a wide range of services, including civil/site engineering, construction services, environmental engineering, geotechnical engineering, landscape architecture, MEP (mechanical, electrical, plumbing) engineering, structural engineering, survey and geospatial services, transportation engineering, and water/wastewater management. Pennoni serves a diverse array of markets such as government (federal, state, local), education, healthcare, industrial, land development, energy, and transportation. They are known for their commitment to client service, technical excellence, and innovative solutions for complex projects, often emphasizing sustainable design and community impact. The company is employee-owned through an Employee Stock Ownership Plan (ESOP).
The Philadelphia headquarters serves as the central command for Pennoni's operations, housing executive leadership, corporate strategy, finance, human resources, marketing, and IT support functions. It also supports major project management and specialized engineering disciplines.
Located in a prominent office building in downtown Philadelphia, offering modern amenities and accessibility. The office space is designed to foster collaboration and communication among its diverse teams.
The HQ fosters a professional and collaborative work environment. Being employee-owned (ESOP) often contributes to a culture of shared responsibility, entrepreneurial spirit, and a focus on long-term success and client satisfaction. Emphasis is placed on technical proficiency and continuous learning.
The Philadelphia headquarters anchors Pennoni's presence in one of its key founding markets. Its location provides access to a rich talent pool, major clients, and significant infrastructure projects in the Mid-Atlantic region.
Pennoni's operations are primarily concentrated within the United States, with a strong presence across the East Coast and extending into the Midwest. While they do not maintain a significant network of international offices, their expertise may be leveraged on projects with international components or for U.S.-based clients with global operations, particularly where U.S. engineering standards and practices are required. Their focus remains on serving domestic markets with tailored regional expertise.
1900 Market Street, Suite 300
Philadelphia
PA
USA
Address: 111 White Horse Pike, Haddon Heights, NJ 08035
Serves as a key hub for Pennoni's operations in New Jersey, addressing the specific infrastructure and development needs of the state's southern counties.
Address: 139 E. Chestnut Hill Road, Newark, DE 19713
Supports Delaware's infrastructure development, environmental compliance, and land use planning, catering to state, county, and local government agencies as well as private developers.
Address: 221 Crescent St NW #101b, Leesburg, VA 20176
Addresses the significant demand for infrastructure, residential, and commercial development in Northern Virginia, supporting both public sector projects and private developers.
Address: 2495 Main Street, Suite 405, Clearwater, FL 33760
Serves the Florida market by providing specialized engineering solutions for coastal resiliency, water management, and infrastructure projects critical to the state's growth and sustainability.
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As of April 2025, Pennoni' leadership includes:
Pennoni has been backed by several prominent investors over the years, including:
Pennoni typically focuses on internal promotions and maintains a stable leadership team. No major C-suite level executive hires or departures have been widely publicized in the last 12-18 months. Any significant changes would typically be announced on their official news channels.
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Pennoni primarily uses the [first_initial][last]@pennoni.com email format. For instance, an employee named Jane Doe would likely have an email address like jdoe@pennoni.com. Variations might exist for common names.
flast@pennoni.com (e.g., jdoe@pennoni.com)
Format
jdoe@pennoni.com
Example
90%
Success rate
Pennoni News • May 8, 2024
Rob Wright, PE, PMP, DBIA, based in Pennoni's Virginia Beach office, was featured in The Military Engineer magazine, a publication by the Society of American Military Engineers (SAME). The feature highlights his contributions and insights relevant to military engineering....more
Pennoni News • February 29, 2024
Pennoni announced its sponsorship of the WTS (Women's Transportation Seminar) Philadelphia Chapter's Annual Awards Gala, reinforcing its commitment to supporting diversity and advancement in the transportation industry....more
Pennoni News • October 26, 2023
Pennoni participated in the 2023 Design-Build Institute of America (DBIA) Conference & Expo, with staff members presenting on topics related to design-build project delivery and industry best practices....more
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