On February 20, PC MPP Randy Hillier filed complaints to Ontario's Integrity Commissioner alleging that Brown had breached the province's ethics rules around down payments over his 2016 bought $2.3 million waterfront house on Lake Simcoe, a loan from a friend and undeclared travels. Currently it is on the market. On April 28, 2018, a 60-page report by the Commissioner found out that Brown breached the Member's Integrity Act four times over matters involving his personal finances, but there was insufficient evidence to find him in breach over alleged travel violations.