Greenhouse Agency is a marketing and advertising agency that specializes in experiential marketing. The company was founded in 2003 and is headquartered in Denver, Colorado. Greenhouse Agency's services include event planning, brand activation, and social media marketing. The company's clients include major brands in the food and beverage, automotive, and technology industries. In 2018, Greenhouse Agency was named one of the fastest-growing companies in the Denver area by the Denver Business Journal.