Well, given the size of the buildings involved, it appears to be quite large.
But if one were targeting cell phone tower replacement, it seems to me that a tethered blimp would make more sense than a piloted dirigible. No pilots needed, no massive fuel supply, power to run electronics possibly from solar cells, or simply run up the tether cable.
Tethered by a cable it becomes a WW2 barrage balloon with the cable cutting the wings off wayward civilian flights, something the Federal Aviation Administration night look down on.