Arlington County approves 831 apartments at Watergate garage site

Arlington County · July 21, 2026

The Arlington County Board has approved Monday Properties' plan to replace two vacant office buildings at 1401 Wilson Blvd. and 1400 Key Blvd. in Rosslyn with a pair of 27-story residential towers holding 831 apartments. The board signed off at its meeting over the weekend of July 18 and 19, 2026, UrbanTurf reported.

The site holds a place in journalism history. The parking garage beneath 1401 Wilson Blvd. is remembered as one of the spots where Washington Post reporter Bob Woodward secretly met his confidential Watergate source in the early 1970s, Patch noted in its report on the approval. The source, known for three decades only as "Deep Throat," was confirmed in 2005 to be former FBI Associate Director Mark Felt. Arlington County later installed a historical marker near the site commemorating the meetings.

The approval takes the form of a major site plan amendment covering a 2.1-acre block where two 12-story office buildings have stood since 1964. Monday Properties announced the board's action on July 20, 2026.

A grocery store and new public space at street level

The 300-foot Wilson Tower will hold 506 units above roughly 12,000 square feet of ground-floor retail, while the Key Tower will hold 325 units anchored by a 17,000-square-foot grocery store, according to UrbanTurf. Street-level shops are planned along Wilson Boulevard, North Oak Street and North Nash Street.

Publicly accessible open space will cover about 52% of the property. Roughly 20,800 square feet of that space sits at ground level and forms an early piece of Rosslyn's long-planned 18th Street Corridor, with a plaza and a public elevator connecting the different grades. The buildings are expected to achieve LEED Gold certification, a green-building standard for energy and design.

A 2014 plan reworked into all housing

The block has been slated for redevelopment before. The county board first approved a plan for the site in 2014, and Monday Properties spent roughly four years reworking that office-anchored design into an all-residential one, UrbanTurf reported. The offices the towers replace have sat empty, part of the vacant commercial space Arlington has been working to reduce by converting office sites to housing.

Monday Properties did not provide a construction timeline or an anticipated completion date.