Sentinel Real Estate Corporation has closed on the sale of a six-story mixed use building on West 125th Street in Manhattanville for $23 million. The six story, 45,945 square foot building is located at 351 West 125th Street and has 8,000 sqf of retail along with 38 units of which 26 are rent-stabilized. Sentinel Real Estate bought the building in 2010 for $9.5 million. A pair of investors completed the purchase with a $15 million mortgage provided by Signature Bank. Sentinel Real Estate’s portfolio encompasses 31,000 apartments and 8.4 million square feet in 88 domestic and international cities.