This is taken from the latest Zillow earnings report:
In April 2017, we received a Civil Investigative Demand from the Consumer Financial Protection Bureau (“CFPB”) requesting information related to our March 2017 response to the CFPB’s February 2017 Notice and Opportunity to Respond and Advise (“NORA”) letter. The NORA letter notified us that the CFPB’s Office of Enforcement is considering whether to recommend that the CFPB take legal action against us, alleging that we violated Section 8 of the Real Estate Settlement Procedures Act (“RESPA”) and Section 1036 of the Consumer Financial Protection Act.
They later add they believe they fully comply with RESPA:
We believe our response to the NORA letter addresses the CFPB’s concerns related to our co-marketing program under which a lender pays us to appear in advertising alongside a real estate agent. We are continuing to cooperate with the CFPB in connection with their most recent request for information. We continue to believe that our acts and practices are lawful and that our co-marketing program allows lenders and agents to comply with RESPA.