404 E 66Th St

The Hardenbrook House is a mid-century, 13–14 story condominium built in 1960 and converted to full-service ownership in 1986. The building offers primarily studios and one-bedroom layouts alongside larger two-bedroom residences created through interior reconfigurations and alcove arrangements. Exterior features include a planted courtyard/garden and limited private outdoor spaces; there is an on-site garage with valet and additional building storage. Common interiors emphasize convenience and practicality: an entrance foyer, central laundry facilities, a live-in superintendent, and a staffed 24-hour doorman/concierge. Units typically present hardwood or porcelain floors, generous closet storage (often multiple walk-ins in larger homes), windowed kitchens with modernized appliances in many units, and through-wall or central air systems in select residences. The property allows pets, pieds-a-terre, and subleasing subject to board approval; there are some unit-specific restrictions such as prohibitions on in-unit washer/dryers. Located on a quiet, tree-lined block of East 66th Street between York and 1st Avenue, the building sits within Lenox Hill/Upper East Side close to hospitals, Whole Foods, shops, restaurants, the FDR Drive, cross-town buses and Lexington Avenue subway access. Lifestyle at Hardenbrook House leans toward practical full-service city living with easy access to neighborhood amenities and storage/parking options for residents.