(B) The Planning Commission shall be governed by the following considerations in studying a request for such a conditional use permit:
(1) The proposed additions or alterations are needed to relieve overcrowded conditions and to modernize an existing use to the extent that it can successfully operate. Such additions or alterations may not be used for the establishment of a new enterprise.
(2) Such additions or alterations shall not be permitted if they would adversely affect the existing development or impede further development of the subject property or of the surrounding area for the uses for which the area is zoned.
(3) The owners shall sign an agreement acceptable to the city and shall be bound by said agreement, to the effect that any additions or alterations made pursuant to this section shall not extend the period of time set forth in this chapter for the termination of nonconforming uses.
(4) No conditional use permit shall be granted that would allow any additions or alterations to a nonconforming metal building, except that a conditional use permit may be granted for an addition which would add floor space not to exceed 20% of the existing floor space to a legally nonconforming metal building.
('64 Code, § 51.05) (Am. Ord. 358, passed 7-10-69; Am. Ord. 700, passed 9-11-86; Ord. 822, passed 3-11-93)