Any permit or variance granted pursuant to the provisions of this chapter, if such action is deemed advisable to effectuate the purposes of this chapter and is reasonable in the circumstances, may be so conditioned as to require the owner of the structure in question to install, operate, and maintain thereon such markers and lights as may be necessary to indicate to flyers the presence of an airport hazard. The provisions of this section shall apply only to any nonconforming structure or tree and to any nonconforming structure or tree which is replaced, altered, or rebuilt in such a way as to create a greater hazard than existed before such replacement, alteration, or rebuilding commenced.
('63 Code, § 10-1.09) (Ord. 2660, passed 6-19-56)