Willoughby Condominium, 24-story residential condominium in Friendship Heights Village, Maryland.

The Willoughby is a 24-story high-rise at 4515 Willard Avenue in Friendship Heights, designed by Vlastimil Koubek and opened in 1969. It holds 815 units, from efficiencies to three-bedroom apartments, plus commercial office space, a convenience store, a restaurant and a 701-space parking garage. Shared amenities include a pool, exercise room, library, party room and rooftop lounge.

Washington developer Milton A. Barlow initiated the project in 1965, but insufficient funds led loan financier Riggs National Bank to take over completion. The Willoughby Apartments opened in 1969 as the largest residential building in the DC area. After several ownership changes, First Condominium Development Company of Chicago converted it, and in 1982 sales and control passed to unit owners.

The Willoughby opened in 1969 as the Willoughby Apartments, built for luxury rentals and named for its site beside Willoughby Park in Friendship Heights. It holds 815 units, from efficiencies to three-bedroom homes, plus a convenience store, restaurant and 701 garage spaces. Residents share a library, party room, rooftop lounge and pool; pets are barred and smoking restricted under amended bylaws.

The tower stands in Friendship Heights Village, adjacent to Willoughby Park and on the edge of a commercial district, with the Washington DC border a short distance away. It is a private residential building: the 815 units, 701 garage spaces, offices, convenience store and restaurant serve residents and their guests rather than the public.

When it opened, this was the largest residential complex in the Washington DC area, a distinction it held for its generation. Its transition to resident control in 1982 demonstrated an early example of community ownership in the region's housing landscape.