1. Nonconforming Uses of Land. The regulations governing nonconforming uses of land in any R district as described in subsection 1 of Section 174.15 shall also apply to this section.
2. Nonconforming Uses of Structures. If a lawful use of a structure or of a structure and land in combination exists at the effective date of the ordinance adopting or amending the Zoning and Property Chapters that would not be allowed in the district under the terms of said chapters, the use may be continued so long as it remains otherwise lawful, subject to the following:
A. Within the FW district, no existing structure devoted entirely or in part to a use not permitted by said chapters in the district in which it is located, except when required by law, shall be enlarged, extended, reconstructed, moved or structurally altered, unless the use is changed to a use permitted in the district in which such structure is located.
B. Any structure in any district other than an R or FW district devoted to a use made nonconforming by said chapters may be structurally altered or enlarged in conformity with the lot area, lot coverage, frontage, yard, height, and parking requirements of the district in which located, provided such construction shall be limited to buildings on land owned of record by the owner of the land devoted to the nonconforming use prior to the effective date of the ordinance from which this section derives. Such structural alteration or enlargement shall not authorize the substitution of a nonconforming use that is less restrictive than the one to which the structure was devoted on the effective date of the ordinance from which this section derives.
C. Any nonconforming use may be extended throughout any parts of a building which were manifestly arranged or designed for such use on the effective date of the ordinance adopting or amending said chapters. No such use shall be extended to occupy any land outside such building.
D. If no structural alterations are made, a nonconforming use of a structure may be changed to another nonconforming use of a similar nature within the same or a more restricted classification. Whenever a nonconforming use has been changed to a more restricted use or to a conforming use, such use shall not thereafter be changed to a less restrictive use.
E. If a nonconforming use of a structure or structure and land in combination is abandoned, the use of such shall thereafter conform to the uses permitted in the district in which it is located. A use shall be deemed abandoned if while such use has been discontinued the owner of the property makes any change to the property inconsistent with the resumption of such use. Changes inconsistent with the resumption of a use include, but are not limited to: placing the property to another use; combining two or more dwelling units under one water, gas or electric meter; or creating an opening between two dwelling units.
F. If a nonconforming use of a structure or structure and land in combination is discontinued for more than one year for any reason whatsoever, the use of such shall thereafter conform to the uses permitted in the district in which it is located.
3. Nonconforming Structures. The regulations governing nonconforming structures in any R district, as described in subsection 3 of Section 174.15 shall also apply to this section.