Onyx, Rubenstein sell repositioned Basking Ridge building for $98.5 million

A joint venture has sold a 306,000-square-foot office building in Somerset County for nearly $100 million, following a sweeping renovation that modernized the 40-year-old property and attracted a global pharmaceutical company as a headquarters tenant.

Value drivers: How Onyx became a top player in New Jersey real estate

John Saraceno Jr. (left) and Jonathan Schultz, co-founders and managing principals of Onyx Equities LLC, have helped grow the company into one of the state’s top private value-add investment firms in New Jersey since its founding in 2004. — Photo…