City Mill

City Mill is a hardware and home improvement chain with eight stores on Oahu, known for lumber, building materials, paint, plumbing and electrical supplies, and tools. Its range also covers garden supplies, grills, patio furniture, flooring and housewares. The company was founded in 1899 by Chung Kun Ai and is still owned and operated by the Ai family.

Orders can be placed online for in-store pickup, which is often ready within four hours, or delivered locally from a store. Assembly is available on select items. Shoppers who buy an eligible WaterSense toilet can apply for a rebate of up to $200 through the Board of Water Supply's Water Sensible program. The stores are in Ewa Beach, Honolulu, Hawaii Kai, Kaimuki, Kaneohe, Mililani, Pearl City and Waianae.