NEW YORK CITY — Construction is underway on 441 E. 57th Street, a 15-story condominium that will feature seven two-, three- and four-bedroom units upon completion in summer 2008. Manhattan-based FLAnk is developing the building, which is located in the Sutton Park neighborhood of Manhattan, New York City. The facility will include four duplexes, one triplex and one penthouse, ranging in size from 1,650 to 3,390 square feet. Finishes include charcoal-stained maple flooring, BTX motorized shades and recessed cove lighting. Unit prices range from $2.8 million to $7.1 million. Amenities within the property are dedicated storage space in the lobby, a complimentary 1-year Sports Club L.A. membership and daily white-glove home cleaning by the Lindquist Agency. CyberDoorman, an interactive touch screen control panel connected to a 24-hour monitoring and security service, will provide the building’s entry-control, delivery management and security.