NEW YORK CITY — Muss Development has acquired 64 W. 48th St., a 17-story office building in the Rockefeller Center area of Manhattan, New York City. Muss plans to reposition the 130,000-square-foot facility into a first-class boutique office building. A multi-million capital improvement plan will include a newly restored lobby, as well as new elevator cabs, windows and bathrooms. The developer purchased the property for $54.5 million from an undisclosed buyer. Mark Lauzon of Cushman & Wakefield is the exclusive leasing agent for the office space, and Jedd Nero of CB Richard Ellis is representing 17,000 square feet of retail space on the first and below grade levels.