1400 Key Boulevard
Rosslyn
Monday Properties has ambitious plan to transform a pair of vacant 1960s office buildings in Rosslyn into a major mixed-use development. The project — two 27-story residential towers with 831 total apartments at 1401 Wilson Boulevard and 1400 Key Boulevard — was approved by the Arlington County's Site Plan Review Committee. The broad strokes of the project remain consistent with what UrbanTurf first reported last August: a 300-foot Wilson Tower (South) with 506 units and roughly 11,900 square feet of ground-floor retail, and a 300-foot Key Tower (North) with 325 units anchored by a 17,004-square-foot grocery store. The unit mix skews heavily toward one-bedrooms, which make up just over 56% of the 831 total apartments, with two-bedrooms accounting for another 32%. Monday Properties is requesting a reduced residential parking ratio of 0.63 spaces per unit rather than the one-to-one ratio.
What?
Project type: Rental apartments
No. of units: 831
Types of units: One- and two-bedroom apartments
Amenities: 750 parking spaces
Website: www.arlingtoneconomicdevelopment.com
Architect: Shalom Baranes Associates
Last updated: July 24th, 2026
Where?
Address:
1400 Key Boulevard
Arlington, VA 22209
When?
Status:Planned
First move-ins: 2023+

