21 E 61St St

Set in the Upper East Side, this 1951-built condominium rises 16 stories and offers two-, three- and five-bedroom residences. The property has 29 homes and was sensitively reimagined in recent years to blend historic limestone-and-brick façades with modern systems.

The Carlton House provides full white-glove service with a 24-hour doorman, concierge and resident manager. Shared amenities include a lobby lounge with fireplace, a planted courtyard with fountain and sculpture, a large state-of-the-art fitness center and a 65-foot heated indoor pool with steam and treatment rooms. Additional building features include bicycle storage, private storage rooms, a billiards/game room, a lobby cold-storage room and on-site handymen/porters.

Homes commonly feature formal entrance foyers, separate dining areas, eat-in kitchens, dressing/den spaces, walk-in closets and private outdoor spaces ranging from small balconies to larger terraces and roof deck access. Many residences benefit from Central Park or Madison Avenue/avenue-facing views. Pets are permitted and the building allows purchases via LLC or trust structures. Residents enjoy immediate access to Central Park, Fifth and Madison Avenues, and the Upper East Side’s cultural institutions and dining destinations.