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National Nuclear Security Agency Headquarters

Project Scope

Caddell was responsible for the construction of a three-story administrative office building totaling approximately 334,000 SF that provides administrative office space to accommodate 1,200 employees. The project includes numerous and varied functionalities, including offices, data centers, fitness center, secure areas, vault-type areas and rooms, sound transmission prevention, tamper resistant construction, antiterrorism, and blast prevention design. It will serve as the headquarters for the Department of Energy’s National Nuclear Security Administration.

This project was designed and built to meet USGBC LEED Gold and NNSA is working on expanding the PV system to achieve LEED Platinum. The structure features rooftop solar panels designed to generate 200 kilowatts of energy for the facility, and the building orientation is designed to minimize western exposure and, consequently, reduce its energy load.

This project was a feature story in Caddell’s 2022 Year in Review corporate magazine. Click here and scroll to page 17 of 33 to read more about the challenges and excellence of this complex project.


U.S. Army Corps of Engineers