Some local businesses and residents opposed the extension, saying that it would be expensive, unnecessary, and could cause a decrease in property values. In June 2013, opponents of the extension filed suit in federal court in Seattle, challenging the extension's approval and funding by the Federal Transit Administration. The suit alleged nine violations of the National Environmental Policy Act and alleged violations of the Administrative Procedure Act. The suit further claimed that LTD had not met requirements for federal funding. The court ruled against the extension's opponents in July 2014, and construction began in March 2015. The Federal Transit Administration awarded $75 million to the project in September 2015, covering most of its $96.5 million total cost.