Entrepreneur Franchise 500 Rank: 199
Initial investment: $ 2,245 to $ 53,200
New units in 2019: 148 units (+20.1 percent)
Buildingstars, a commercial cleaning company founded in 1994, is headquartered in St. Louis. The company began franchising in 2000 and now has regional offices in Chicago, Houston, Phoenix, Pittsburgh, New York and more. Services include carpet and floor care, as well as green cleaning and consulting.