Airbnb has quickly become a favorite destination for travelers looking for somewhere to stay on vacation. Now the home-sharing startup is interested in doing the same for people who want to find a place to live.

Airbnb is considering an expansion in the long-term rental business and has asked McKinsey & Co. to research the market, said two people familiar with the matter. The consulting firm’s work involves conducting competitive analysis of Craigslist, said the people, who asked not to be identified because the deliberations are private.

While Craigslist currently dominates rental markets in many cities with its “sublets/temporary” section, Airbnb believes there may be an opportunity to offer a safer, identity-verified alternative, the people said. McKinsey is expected to present its findings to senior management at the San Francisco company next month.

Nick Papas, a spokesman for Airbnb, declined to comment on the project. He said at any given time, Airbnb is considering dozens of initiatives and new product categories, and many never see the light of day. “Examining different parts of the market is standard operating procedure, and we don’t have any announcements to make,” he said.

Craigslist’s giant user base is an attractive target for Airbnb, which is on a mission to add new revenue streams and justify a private market valuation of $31 billion. Craigslist boasts about 60 million U.S. visitors a month, according to internet research firm ComScore. Despite being one of America’s most trafficked online destinations, the classifieds website looks and behaves much like it did when it debuted more than two decades ago. In most places, users can post for free and anonymously. Craigslist doesn’t police listings.

The laissez-faire approach has made Craigslist a haven for hustlers and scammers. A March 2016 study from New York University found that Craigslist fails to identify and remove more than half of scam rental listings. Early on, Airbnb used Craigslist’s leniency toward spam to its advantage. In 2009, an Airbnb founder devised a system to email thousands of Craigslist users encouraging them to migrate their home and apartment listings to Airbnb, according to “The Upstarts,” a book by Bloomberg’s Brad Stone.