EXHIBIT 21.1 Subsidiaries of SBA Communications Corporation ---------------------------------------------- I. SBA Communications Corporation (Florida) owns 100% of SBA Telecommunications, Inc. (Florida) A. SBA Telecommunications, Inc. owns 100% of the following entities: 1. SBA, Inc. (Florida) 2. SBA Leasing, Inc. (Florida) 3. SBA Towers, Inc. (Florida) 4. Communication Site Services, Inc. (Florida) ("CSSI")