OREANDA-NEWS. April 05, 2016. A warning to those San Franciscans who've gotten into the illegal hotel business by offering short-term rentals on more than one home: Airbnb is after you.

The home-sharing site on Saturday said it's investigating hosts in the city with multiple listings and plans to give "unwelcome commercial operators" the boot.

The company, also based in San Francisco, released data showing the number of hosts with multiple listings in violation of the city's law restricting vacation rentals to permanent residents offering their own home. Excluded from the law are licensed hotels or rentals of more than 30 days, according to the San Francisco Chronicle, which first published the Airbnb data.

Airbnb is targeting 288 hosts for possible expulsion. They control 671 listings, about 7 percent of all San Francisco listings. But they made up 17 percent of the revenue brought in by San Francisco hosts between March 2015 and March 2016.

The crackdown follows years of criticism from locals in San Francisco and beyond who charge that Airbnb is contributing to tighter housing markets, with landlords taking rental units off the market to capitalize on short-term rentals instead. It also makes good on a community compact Airbnb issued in November vowing, among other things, to prevent people from listing properties other than permanent residences.