The Ah Luis store was built as a labor agency and to supply the needs of the workforce carrying unique goods such as pickled rattlesnake for arthritis pain and powdered rhinoceros horn. As the Chinese community grew, it became a neighborhood store, bank, post office and eventually, the informal headquarters of Chinatown. Ah Louis had become a community leader.
Ah Louis died in 1936. In 1965, the store was designated State Historical Landmark No. 802. Founded in 1874, current building built 1884, using only bricks made from the Ah Louis Brickyard. This two-story building is classified, stylistically, as Italianate, and is identifiable by the upstairs balcony overlooking Palm Street. The Ah Louis store contains six upstairs rooms all used for sleeping quarters, and served the growing Chinese community as a general goods store a bank, and a post office. Ah Louis himself was a kind of figurehead for the community, and contributed to the growth of the Chinese community by contracting many Chinese laborers to work on the Cuesta Grade tunnels for the South Pacific Railroad. The building remains in the family, and now houses a vintage goods store. It is designated as a State Historical Landmark in part because the entire Chinatown area of old San Luis Obispo blossomed around Ah Louis.