(Portland, OR) -- A Portland city audit shows that 80-percent of the city's Airbnb-style rentals operate outside the law. OregonLive reports that auditors say city leaders don't have the data to effectively manage its own regulations. There are regulations on the books aimed at keeping short-term rentals from becoming businesses instead of homes. However, auditors say the city fails to make sure the rules are followed and rarely enforces them. Mayor Ted Wheeler and Commissioner Chloe Eudaly responded to the report with a promise to do better at oversight and enforcement.