Costello’s operates 57 stores in 5 states comprised of 47 Ace Hardware locations through New York, New Jersey, Pennsylvania, Maryland, and Virginia, “East Islip Paint” in NY, “Suburban Paint & Commercial Supply” in Maryland, “Tri County Hearth & Patio” in Maryland, “Courtland Fireside Hearth & Spa” in Maryland, “Costello’s Hearth & Spa” in NY, as well as nine hearth/spa showrooms in select hardware stores. Founded by Vincent Costello in 1973 on the principles of problem-solving, building great relationships, and continuous growth and improvement, Costello’s is one of the largest family-owned hardware store chains in the United States.