NEW YORK CITY — Ariel Property Advisors has facilitated the sale of Adam Clayton Powell Cluster, a mixed-use portfolio in Central Harlem. The portfolio, which includes four mixed-use buildings and a vacant lot between 133rd and 134th streets, sold for $16.4 million. The four walk-up buildings contain 41 residential and six retail units spanning 39,445 square feet. The vacant lot is zoned R7-2/C1-4, allowing for 7,500 buildable square feet of retail and residential development. Victor Sozio, Shimon Shkury, Michael A. Tortorici and Orry Michael of Ariel represented the undisclosed seller.