Lester Knispel has become well-known for orchestrating the financial affairs of heavy hitters like Nicki Minaj, Mariah Carey and the entire Kardashian family. The Boulevard Management exec has funneled a large portion of it into amassing a hefty residential real estate portfolio. In addition to homes in Calabasas and the Paradise Valley enclave of Arizona, Knispel and wife Janet plunked down $1.5 million for a Florida investment property during the height of the COVID-19 pandemic.