Brian Roach is the fourth generation of his family to live in Pasco, and shares the occupation of both his father and his grandfather, making him the third generation of lawyers in his family. He is an active member of St. Patrick's Parish in Pasco. He and his wife Sofia have three children, Patricio, Elena, and Catalina Roach. He is a former Vice President of the Washington Association of Criminal Defense Attorneys, and also a former board member. He is a former Board of Directors Member for Catholic Family and Child Services of the Tri-Cities, is an active volunteer for Tri-Cities Preparatory School, including as coach for the school's YMCA Mock Trial team.