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600 Fifth St. NW, A Trophy Office Space In D.C.'s Vibrant Penn Quarter

Washington, D.C.
Washington, D.C.
April 09, 2026 | 11:43 a.m. ET Stonebridge/Rockefeller Group John Knowles, Studio B Writer
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Courtesy of Rockefeller Group
A rendering of 600 Fifth St. NW

Welcome to 600 Fifth St. NW, a 400K SF, Class-A, full-city-block office redevelopment in the heart of Washington, D.C.’s Penn Quarter and Judiciary Square. The former Washington Metropolitan Area Transit Authority headquarters is being transformed into a modern trophy office development by Rockefeller Group and Stonebridge, with architectural design from Pickard Chilton. The building is scheduled for a spring 2026 opening.

600 Fifth St. NW will host Bisnow’s Washington, D.C., State of the Market event on April 23. Register here. 

About The Asset

600 Fifth St. NW features private outdoor terraces on every other floor, offering indoor-outdoor work experiences and views across the city. The glass curtain wall has abundant natural light, enhancing workplace quality.

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Courtesy of Rockefeller Group
A rendering of the fitness center

A ground-floor fitness center features a yoga studio, serviced locker rooms and views of the National Building Museum. Tenants can enjoy shared conditioned penthouse amenity space with a tenant lounge, coffee bar, catering kitchen and flexible conference space for large and small gatherings. 

Overlooking the Capitol, the penthouse deck features lounge furniture, a fire pit and an operable wall system that allows for an open connection between the indoor and outdoor amenity spaces.

Stonebridge principal Doug Firstenberg said the building brings a new category-defining office space in a district where trophy opportunities have been limited. This includes a more modern and wellness-oriented infrastructure that elevates the tenant experience “beyond traditional retrospective office renovations.” 

“The amenity richness — such as the terraces, fitness offerings, communal penthouse spaces and enhanced public space activation with outdoor plazas, retail and activated street fronts — helps knit the building into the urban fabric rather than create an isolated corporate tower,” Firstenberg said. 

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Courtesy of Rockefeller Group
A rendering of the main lobby

About The Neighborhood 

600 Fifth St. NW sits in Penn Quarter, a D.C. district blending business, government, entertainment and dining. The historic mixed-use hub includes cultural and commercial cores of world-class museums, theaters, restaurants and entertainment venues. 

The building features easy access to multiple Metro stations, such as Gallery Place-Chinatown, Metro Center, Judiciary Square and Archives-Navy Memorial. 

Just across Sixth Street is the newly renovated Capital One Arena. The $1B investment is scheduled for completion in fall 2027, anchoring an entertainment district with sports and concerts, further driving foot traffic, said Hilary Goldfarb, senior managing director of Rockefeller Group's mid-Atlantic team. 

“It’s a magnet for firms seeking top talent, transit access and proximity to world-class amenities and the U.S. Capitol,” Goldfarb said. “This location is ideal for employers looking to attract employees who want vibrant urban environments.” 

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Courtesy of Rockefeller Group
A rendering of the rooftop terrace

Building Features

  • Targeted WELL and LEED Gold certifications, signaling leading sustainability, occupant health, well-being and energy-efficiency practices.
  • Dedicated outdoor air system with MERV 13 air filters installed on-site.
  • One of the most private outdoor terraces among new trophy office buildings in D.C.
  • The building occupies an entire city block.
  • The redevelopment reimagines the historic former WMATA headquarters into a workplace designed for post-pandemic workplace expectations.
  • Ground-level activated streetscape with restaurant and retail space along Fifth, Sixth and F streets.
  • A ground-floor bike storage facility with secure lockers, showers and direct access to Sixth Street for active commuters.
  • On-site parking with two-way streets on all four sides of the building, allowing for easy access and egress in any direction.
  • 600 Fifth is the only active trophy office building being delivered in the District in 2026.

600 Fifth’s combination of design, amenity and place creates a compelling draw for tenants focused on attraction and retention in a competitive workspace market, Firstenberg said.

Available Space Listings

  • Spec suites ranging from 3,500 SF to 7,500 SF.
  • 10K SF to 165K SF of contiguous space available in shell condition.
  • Click here for more information on office availability.

Broker Contacts

This article was produced in collaboration between Stonebridge, Rockefeller Group and Studio B. Bisnow news staff was not involved in the production of this content.

Studio B is Bisnow’s in-house content and design studio. To learn more about how Studio B can help your team, reach out to studio@bisnow.com.

Contact John Knowles at john.knowles@bisnow.com
Related Topics: Doug Firstenberg, Penn Quarter, Rockefeller Group, Judiciary Square, Stonebridge, StudioB-2980, 600 5th St. NW