Antenna systems for controlled coverage in buildings are disclosed where a data communications network in a building includes one or more external antennas. At least one of the external antennas is disposed on a roof or exterior of the building disposed in or associated with a window, a sky sensor or a digital architectural element. The one or more external antennas are coupled to a network infrastructure of the building via one or more data carrying lines and/or wireless links and are configured for communication with an external wireless network. The network infrastructure includes one or more data carrying lines, one or more network switches, and at least one control panel. In some embodiments, at least one of the external antennas is configured for communication with an external wireless network.