AcquisitionConstruction Engineering

GZA GeoEnvironmental, Inc. Acquires Siefert Associates, LLC

Siefert Associates, LLC acquired by GZA GeoEnvironmental, Inc.

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Siefert Associates, LLC
Acquired

Siefert Associates, LLC

Civil Engineering

Undisclosed Amount

September 2, 2025

GZA GeoEnvironmental, Inc.
Acquirer

GZA GeoEnvironmental, Inc.

Environmental Services

GZA GeoEnvironmental, Inc. has acquired Siefert Associates, LLC for an undisclosed amount.

The transaction sees Siefert Associates, a premier construction engineering firm, integrate its operations and team into GZA, a firm specializing in geoenvironmental services.

This strategic move aims to expand GZA's service capabilities and market presence, particularly within the specialized field of construction engineering.

Founded in 2000, Siefert Associates has established itself as a go-to firm for construction engineering solutions.

With a team of over 20 professionals, Siefert provides high-quality engineering support during the construction phase of complex and high-profile projects.

Their expertise spans structural, demolition, erection, geotechnical, accelerated bridge construction, and heavy lift and rigging engineering, tailored to client-specific methods and project constraints in the NYC Metropolitan Area and beyond.

The acquisition is strategically significant for GZA GeoEnvironmental, Inc.

By incorporating Siefert's specialized construction engineering services, GZA can offer a more comprehensive suite of solutions to its clients.

Siefert’s deep knowledge of construction practices, strong client relationships among leading contractors, and established presence in the high-activity NYC Metro market complement GZA’s existing geoenvironmental and geotechnical expertise, creating opportunities for integrated project delivery.

Expected synergies include an expanded service portfolio, allowing the combined entity to address a wider array of project challenges from conceptual design through construction completion.

GZA gains Siefert's highly experienced engineering team and their reputation for responsiveness and quality work.

This integration is anticipated to enhance both firms' capabilities in complex infrastructure and construction projects, leveraging combined strengths to deliver efficient and tailored solutions.

The unified entity is positioned to deepen its knowledge base and broaden its client reach, continuing to serve the evolving needs of the construction and environmental sectors.

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