Cadmus is a leading, global consulting firm specializing in technical and strategic expertise for governments, energy utilities, and private-sector organizations.
In efforts to gather their staff from a recent acquisition, alongside their Clarendon, VA staff, Cadmus relocated headquarters from Waltham, MA to Arlington, VA – an optimal location to serve the firm’s U.S. Federal government clients.
GPI provided engineering consulting services for the design of the mechanical, electrical, plumbing, and fire protection systems for the new 42,000 sqft Cadmus headquarters. This modern, one-and-a-half-story project includes a reception area, private offices, workstations, and specialized spaces such as huddle rooms, phone rooms, and conference rooms, including a conferencing center with banquette seating for up to 125 guests. Employees can now enjoy amenities such as a wellness room, private outdoor terrace, coffee bar, and pool table for relaxation and team-building.
The scope included design for the office renovation, a staircase linking the reception area to the second floor, and critical system upgrades, including supplemental air conditioning and modification of the outside air system for enhanced comfort of meeting spaces. Design also called for replacing plumbing fixtures at the existing café, new finishes, and new lighting.
Through innovative design and engineering, GPI transformed Cadmus’ vision into a sophisticated, high-performance workspace that balances functionality, comfort, and modern aesthetics.
Project Highlights
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Owner/ClientSshape
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LocationArlington, VA
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ServicesBuilding Systems Design
Building Systems Engineering
Electrical Engineering
Fire Protection Engineering
HVAC Design
Lighting Design
Mechanical Engineering
Plumbing Engineering

Ranked in the Top 100 Professional Services Firms
The ENR (Engineering News-Record) Top 100 Professional Services Firms is an annual ranking of the top firms in the professional services sector within the construction and engineering industry. Being recognized as an ENR Top 100 Professional Service firm signifies a company’s excellence, credibility, and competitiveness within the construction and engineering industry.