(A) Future uses. No material change in violation of §§ 154.11 or 154.13 hereof shall be made in the use of land, and no structure or tree shall be erected, altered, planted, or otherwise established in violation of §§ 154.11 or 154.13 hereof in any of the areas of land described in § 154.10 hereof, unless a permit therefor shall have been applied for and granted. Each such application shall indicate the purpose for which the permit is desired, with sufficient particularity to permit it to be determined whether the resulting use, structure, or tree would conform to the regulations herein prescribed. If such determination is in the affirmative, the permit applied for shall be granted.
(B) Existing uses. Before any existing use, structure, or tree may be replaced, substantially altered, or repaired, rebuilt, allowed to grow higher, or replanted, within any of the areas of land described in § 154.10 hereof, a permit must be secured authorizing such replacement, change or repair if it is in violation of §§ 154.11 or 154.13. No such permit shall be granted that would allow the establishment or creation of an airport hazard or permit a nonconforming use, structure or tree to be made or become higher, or become a greater hazard to air navigation, than it was on the effective date of this chapter or than it is when the application for a permit is made. Except as indicated, all applications for a permit for replacement, change or repair of existing use, structure, or tree shall be granted.
('71 Code, Appendix A, § 8) (Ord. passed 6-4-57)