SBA Communications Corporation owns and operates wireless communications tower structures, rooftops, and other structures that support antennas used for wireless communications in the United States and its territories, Canada, Central America, and Brazil. The company operates through two segments, Site Leasing and Site Development. It leases antenna space to wireless service providers on towers that it owns or operates; and manage rooftop and tower sites for property owners under various contractual arrangements. As of December 31, 2014, the company owned 24,292 towers; and managed or leased approximately 5,000 actual or potential towers. It also provides a range of site development services, including site audits, identification of potential locations for towers and antennas, modification of lease agreements to add equipment to existing structures, support in buying or leasing of the location, obtaining zoning approvals and permits, tower structure construction, antenna installation, and radio equipment installation, commissioning, and maintenance. SBA Communications Corporation was founded in 1989 and is headquartered in Boca Raton, Florida.