Riley leads Allen Tate Companies, the largest brokerage in the Carolinas, which does over $7 billion in annual sales. In 2022, the company acquired large Asheville, North Carolina-based brokerage Beverly-Hanks Realtors. While Howard Hanna acquired a majority stake in Allen Tate Companies in 2018, the brokerage continues to operate under its well-known brand with Riley at the helm.