Leviton Manufacturing Co., a leading maker of electronics and electrical devices, is relocating its corporate headquarters to Melville. The move is expected to be completed by Monday and affects about 450 workers, said Mark Fogel, the company's vice president of human resources and administration. Leviton's previous corporate headquarters was in Little Neck, in a 170,000-square-foot, three-building complex. However, the buildings were older and needed updating, Fogel said. The relocation to 201 N. Service Rd., just west of Route 110 along the Long Island Expressway, gives Leviton a more updated, energy-efficient workplace, he said, and also is convenient for its workforce. "A majority of our staff and management lives in the local area," he said. A corporate move that allowed employees to stay in their homes "made sense to us." The renovated structure - a four-story, 140,000-square-foot facility - has several green features and is a candidate for LEED (Leadership in Energy and Environmental Design) certification, a U.S. Green Building Council program that rates buildings on sustainability and energy efficiency. Many of its appliances and electronic equipment are Energy Star, and the building also has low-flow fixtures and water-saving toilets. About 20 percent of the building materials used in the renovation come from recycled products, and 50 percent of construction debris was recycled, the company said. "Our new office complex reflects our culture and identity as a pacesetter in green building design," company president and chief executive Donald J. Hendler said in a statement. Leviton, founded in Brooklyn in 1906, had been at its Little Neck site since 1973. Fogel did not reveal renovation costs but called it a "multimillion-dollar" project that began with corporate feasibility studies in 2006. The company has a long-term lease with Steel Equities, a commercial real estate development firm in Hicksville. "We plan on being at the site for a long time," Fogel said.