A case against Houlihan Lawrence has been granted class-action status by a New York state court. The lawsuit alleges that the brokerage incentivized agents who facilitated deals in which the brokerage served on both the listing and sales side. The brokerage says it plans to appeal the ruling. Dual agency has faced a test in the courts in several cases throughout the years. As this one appears to get traction, it may renew the conversation, and debate, about the merits of dual agency in the industry.