King’s Material, Inc. started business in 1882 when William King established a plaster mill on the west bank of the Cedar River. The company kept the river channels open for navigation by dredging sand for construction and municipal use.

King’s Crown Plaster, as it was then called, began delivering ready mix concrete in ¾-yard mixers to industrial, commercial, infrastructure and residential construction projects in the area in 1935.

In the late 1970’s, several concrete block-manufacturing plants were acquired. A new facility was built in 2000.

In 1998, Stone Concepts, a stone fabricating facility, was purchased to compliment the masonry products line of brick and other distributed masonry goods.

In 2003, Marquart Concrete Products was acquired to serve northern Iowa. Marquart’s block manufacturing plant was opened in 1945. With their wide variety of landscaping, concrete masonry, and brick products, they sell building materials throughout northern Iowa as well as southern Minnesota.