The building that houses UCMHS was constructed in the 1960s and housed a portion of Union County College (UCC) through the 1970s. It was abandoned through the mid-1990s when the UCVTSD had the building gutted and renovated. UCMHS opened in 1997 and since then the building has seen minor renovations and the addition of a glass atrium to the fitness center. Following the major renovations in the mid-1990s, the building was named Mancuso Hall after the Chairman of the Union County Board of Education at the time.