The 1962 real estate listing for this building built in 1950 describes the property as “two commercial stores, used as experimental laboratories.” They were vacant when they were photographed in 2020. 12808 was the California School of Drywall in 1991, and Shaper Supply, a surfboard shaping tools and materials store, in 2015. 12810 was a beer and wine store for many years, called AA Mart, possibly a generic name meant to place it near the top of an alphabetically arranged business listing, or an ironic reference to Alcoholics Anonymous.