A.R.S. § 28-8472

In granting a permit or variance under section 28-8470 or 28-8471, the administrative agency or board of adjustment, if it deems the action advisable to fulfill the purposes of this article and reasonable in the circumstances, may place a condition on the permit or variance that requires the owner of the structure or tree in question to permit the political subdivision, at its own expense, to install, operate and maintain markers and lights on the structure or tree as necessary to indicate the presence of an airport hazard.