Construction is set to start in February on the new Voxx International Corp. headquarters in Lake Nona, which will include a 115,000-square-foot manufacturing plant and a 10,000-square-foot corporate office. The developer of the 7,000-acre master-planned community of Lake Nona denied accusations from a group of homeowners that it is building an "unwanted and unlawful" industrial park near a residential neighborhood in southeast Orlando.