300 M at Navy Yard emerges as premier destination for federal and defense tenants

With over 76,000 SF of new leasing activity since acquisition, Garfield Investments and Avison Young capitalize on growing demand

Washington, D.C. – Global commercial real estate advisor, Avison Young, today announces it has executed more than 76,000 square-feet (sf) of new leasing activity at 300 M Street, SE since the property was acquired by a partnership led by Garfield Investments, in June 2025. The 289,321-sf, eight-story office property is located at 300 M Street SE in Washington, D.C., directly across from the main gate of the Washington Navy Yard, Department of Transportation headquarters, and the new Federal Aviation Administration headquarters.

Avison Young’s team of Greg Tomasso, Will Stern and Macy Parana, based in the firm’s Washington, D.C. office, have been hired to represent Garfield Investments in lease transactions at the building. The team also assisted Garfield Investments in its acquisition of the property in June 2025.

Within six months of acquiring the property, Garfield Investments attracted a wave of high-impact tenants across government contracting, defense and aerospace industries, including:

• 21,100 RSF – Reliability & Performance Technologies
• 5,000 RSF – Systems Planning & Analysis
• 17,600 RSF – Blueforge Alliance
• 16,500 RSF – CACI

This momentum aligns with broader Navy Yard submarket trends, where mission‑driven federal and defense users account for a significant share of tenant demand. 300 M Street, SE serves as a hub for the Navy and FAA contracting communities. Since 2020, defense and aerospace tenants have accounted for nearly 30% of all space leased in the Navy Yard submarket, followed by government tenants at 11.7%, according to Avison Young Market Intelligence.

“Given Avison Young’s longstanding representation of office owners in the Washington Navy Yard, we have established a deep understanding of the contracting community attracted to the area,” said Tomasso. “As a result, our Avison Young team has been able to execute significant leasing volume for Garfield Investments over a short period of time following its acquisition of the property.”

Immediately following the acquisition, Garfield Investments commenced a comprehensive reinvestment strategy for the asset. This included the enhancement of the lobby, renovation of the common areas and bathrooms, and the addition of additional onsite amenities. These initiatives have significantly contributed to the asset’s ability to attract and retain tenants at 300 M Street, SE.

“The demand we are seeing from federal government and defense industry tenants demonstrates the strength of this location and the impact of our reinvestment strategy. Avison Young understood our vision from day one and has been instrumental in delivering tangible results. We look forward to building on this momentum,” said John B. Mason, Founder and CEO, Garfield Investments.

The property features a fitness facility, new conference center and tenant lounge offering four conference rooms with the ability to accommodate 100+ people, and ample on-site parking, among other amenities.