Here in the Center West building, Sandstone Properties hosts its corporate headquarters. This private equity real estate investment company manages millions of square feet of commercial property, including office, retail and industrial. The company is active in land and property development, acquisitions, dispositions, property management, leasing and finance. Properties are mostly located in the prime Southern California market, though Sandstone's portfolio also includes properties in six other states and Costa Rica. Founder Eri Kroh formerly had a medical technology distribution company before he began investing in real estate.