Although Airbnb’s home city of San Francisco has taken steps to regulate the short-term rental service, a new report shows that most rentals are breaking the law in one way or another. A policy analysis released by the city shows that most home-sharing operators have not registered with the city’s Office of Short-Term Rentals. At the end of 2015, 1,082 applications were received, but that means that nearly 80 percent of Airbnb’s 5,378 unique hosts in San Francisco did not register. Additionally, since February 2015, approximately 26 percent of home listings where the host is not present were apparently rented for more than 90 nights per year, which violates the city’s 90-night limit. This news comes on the heels of U.S. investment bank Cowen & Company’s forecast that Airbnb will process $12.3 billion in reservations this year, up from roughly $7.2 billion in 2015. Read more here.