The Sandy Co-op building was an official outlet of ZCMI, Zion's Co-operative Mercantile Institution, part of a co-operative system that began in 1868 and served more than 150 communities in the intermountain area with retail commodities and services. The land was originally owned by Le Grande Young, sold to Wells Clark in 1886, and purchased by Sandy Co-op in 1888. Constructed in 1890, the building housed a co-op mercantile store on the bottom floor and a social hall on the top floor, where dances and other social events were held weekly as major community gatherings. The lower level later housed a variety of occupations, including the Jenkins Funeral Parlor from 1908 until 1912, when a large Bull Durham advertisement was painted on the south wall. Across the street stood a Utah Southern Railroad station, and the building endured the vibrations of many trains during Sandy's coming of age. In 1912, Mingo Lodge No. 6 Knights of the Pythias bought the building for use as a lodge hall and for other social functions, and it became known as the K. P. Lodge. In 1939, Sandy City purchased it for use as an interim fire station until a new facility was built elsewhere in 1984. Its 1890 architecture is non-reinforced masonry, built of low-fired brick on a quartzite-granite foundation.