After an adventurous youth that took him to Alaska, Hal Roach arrived in Hollywood, California, in 1912 and began working as an extra in silent films. Upon coming into an inheritance, he began producing short film comedies in 1915 with his friend Harold Lloyd, who portrayed a character known as Lonesome Luke.
In September 1916, Roach married actress Marguerite Nichols. They had two children, Hal Jr. (June 15, 1918 – March 29, 1972) and Margaret M. Roach (March 15, 1921 – November 22, 1964). After almost 25 years of marriage, Marguerite died in March 1941.
Roach married a second time on September 1, 1942, to Lucille Prin (January 20, 1913 – April 4, 1981), a Los Angeles secretary. They were married at the on-base home of Colonel Franklin C. Wolfe and his wife at Wright-Patterson Airfield in Dayton, Ohio, where Roach was stationed at the time while serving as a major in the United States Army Air Corps. Roach and Lucille had four children, Elizabeth Carson Roach (December 26, 1945 – September 5, 1946), Maria May Roach (born April 14, 1947), Jeanne Alice Roach (born October 7, 1949), and Kathleen Bridget Roach (born January 29, 1951).
Unable to expand his studios in downtown Los Angeles because of zoning, Roach purchased what became the Hal Roach Studios from Harry Culver in Culver City, California. During the 1920s and 1930s, he employed Lloyd (his top money-maker until his departure in 1923), Will Rogers, Max Davidson, the Our Gang kids, Charley Chase, Harry Langdon, Thelma Todd, ZaSu Pitts, Lupe Vélez, Patsy Kelly and, most famously, Laurel and Hardy. During the 1920s, Roach's biggest rival was producer Mack Sennett. In 1925, Roach hired away Sennett's supervising director, F. Richard Jones.